CERN Accelerating science

Article
Report number arXiv:2009.06619 ; LHCb-PAPER-2020-023 ; CERN-EP-2020-161 ; LHCB-PAPER-2020-023
Title Observation of multiplicity-dependent prompt $\chi_{c1}(3872)$ and $\psi(2S)$ production in $pp$ collisions
Author(s)

Aaij, Roel (NIKHEF, Amsterdam) ; Abellán Beteta, Carlos (Zurich U.) ; Ackernley, Thomas (Liverpool U.) ; Adeva, Bernardo (U. Santiago de Compostela (main)) ; Adinolfi, Marco (Bristol U.) ; Afsharnia, Hossein (Clermont-Ferrand U.) ; Aidala, Christine Angela (U. Michigan, Ann Arbor) ; Aiola, Salvatore (INFN, Milan) ; Ajaltouni, Ziad (Clermont-Ferrand U.) ; Akar, Simon (Cincinnati U.) ; Albrecht, Johannes (Tech. U., Dortmund (main)) ; Alessio, Federico (CERN) ; Alexander, Michael (Glasgow U.) ; Alfonso Albero, Alejandro (U. Barcelona (main)) ; Aliouche, Zakariya (Manchester U.) ; Alkhazov, Georgy (St. Petersburg, INP) ; Alvarez Cartelle, Paula (CERN) ; Amato, Sandra (Rio de Janeiro Federal U.) ; Amhis, Yasmine (IJCLab, Orsay) ; An, Liupan (INFN, Florence) ; Anderlini, Lucio (INFN, Florence) ; Andreianov, Aleksei (St. Petersburg, INP) ; Andreotti, Mirco (INFN, Ferrara) ; Archilli, Flavio (Heidelberg U.) ; Artamonov, Alexander (Serpukhov, IHEP) ; Artuso, Marina (Syracuse U.) ; Arzymatov, Kenenbek (Yandex Sch. Data Anal., Moscow) ; Aslanides, Elie (Marseille, CPPM) ; Atzeni, Michele (Zurich U.) ; Audurier, Benjamin (IJCLab, Orsay) ; Bachmann, Sebastian (Heidelberg U.) ; Bachmayer, Marie (Ecole Polytechnique, Lausanne) ; Back, John (Warwick U.) ; Baker, Sophie (Imperial Coll., London) ; Baladron Rodriguez, Pablo (U. Santiago de Compostela (main)) ; Balagura, Vladislav (IJCLab, Orsay) ; Baldini, Wander (INFN, Ferrara) ; Baptista Leite, Juan (Rio de Janeiro, CBPF) ; Barlow, Roger (Manchester U.) ; Barsuk, Sergey (IJCLab, Orsay) ; Barter, William (Imperial Coll., London) ; Bartolini, Matteo (INFN, Genoa ; Genoa U.) ; Baryshnikov, Fedor (Natl. U. Sci. Tech., Moscow) ; Basels, Jan-Marc (Aachen, Tech. Hochsch.) ; Bassi, Giovanni (INFN, Pisa) ; Batsukh, Baasansuren (Syracuse U.) ; Battig, Alexander (Tech. U., Dortmund (main)) ; Bay, Aurelio (Ecole Polytechnique, Lausanne) ; Becker, Maik (Tech. U., Dortmund (main)) ; Bedeschi, Franco (INFN, Pisa) ; Bediaga, Ignacio (Rio de Janeiro, CBPF) ; Beiter, Andrew (Syracuse U.) ; Belavin, Vladislav (Yandex Sch. Data Anal., Moscow) ; Belin, Samuel (INFN, Cagliari) ; Bellee, Violaine (Ecole Polytechnique, Lausanne) ; Belous, Konstantin (Serpukhov, IHEP) ; Belov, Ilia (SINP, Moscow) ; Belyaev, Ivan (Moscow, ITEP) ; Bencivenni, Giovanni (Frascati) ; Ben-Haim, Eli (Paris U., VI-VII) ; Berezhnoy, Alexander (SINP, Moscow) ; Bernet, Roland (Zurich U.) ; Berninghoff, Daniel (Heidelberg U.) ; Bernstein, Harris Conan (Syracuse U.) ; Bertella, Claudia (CERN) ; Bertholet, Emilie (Paris U., VI-VII) ; Bertolin, Alessandro (INFN, Padua) ; Betancourt, Christopher (Zurich U.) ; Betti, Federico (INFN, Bologna ; Bologna U.) ; Bettler, Marc-Olivier (Cambridge U.) ; Bezshyiko, Iaroslava (Zurich U.) ; Bhasin, Srishti (Bristol U.) ; Bhom, Jihyun (Cracow, INP) ; Bian, Lingzhu (Wuhan U.) ; Bieker, Martin Stefan (Tech. U., Dortmund (main)) ; Bifani, Simone (Birmingham U.) ; Billoir, Pierre (Paris U., VI-VII) ; Birch, Matthew (Imperial Coll., London) ; Bishop, Fionn Caitlin Ros (Cambridge U.) ; Bizzeti, Andrea (INFN, Florence ; U. Modena (main)) ; Bjørn, Mikkel (Oxford U.) ; Blago, Michele Piero (CERN) ; Blake, Thomas (Warwick U.) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Blusk, Steven (Syracuse U.) ; Bobulska, Dana (Glasgow U.) ; Boelhauve, Julian Alexander (Tech. U., Dortmund (main)) ; Boente Garcia, Oscar (U. Santiago de Compostela (main)) ; Boettcher, Thomas (MIT) ; Boldyrev, Alexey (Higher Sch. of Economics, Moscow) ; Bondar, Alexander (Novosibirsk, IYF ; Novosibirsk State U.) ; Bondar, Nikolay (St. Petersburg, INP) ; Borghi, Silvia (Manchester U.) ; Borisyak, Maxim (Yandex Sch. Data Anal., Moscow) ; Borsato, Martino (Heidelberg U.) ; Borsuk, Jozef Tomasz (Cracow, INP) ; Bouchiba, Sonia Amina (Ecole Polytechnique, Lausanne) ; Bowcock, Themistocles (Liverpool U.) ; Boyer, Alexandre (CERN) ; Bozzi, Concezio (INFN, Ferrara) ; Bradley, Matthew John (Imperial Coll., London) ; Braun, Svende (Maryland U., College Park) ; Brea Rodriguez, Alexandre (U. Santiago de Compostela (main)) ; Brodski, Michael (CERN) ; Brodzicka, Jolanta (Cracow, INP) ; Brossa Gonzalo, Arnau (Warwick U.) ; Brundu, Davide (INFN, Cagliari) ; Buonaura, Annarita (Zurich U.) ; Burr, Christopher (CERN) ; Bursche, Albert (INFN, Cagliari) ; Butkevich, Anatoly (Moscow, INR) ; Butter, Jordy Sebastiaan (NIKHEF, Amsterdam) ; Buytaert, Jan (CERN) ; Byczynski, Wiktor (CERN) ; Cadeddu, Sandro (INFN, Cagliari) ; Cai, Hao (Wuhan U.) ; Calabrese, Roberto (INFN, Ferrara ; Ferrara U.) ; Calefice, Lukas (Tech. U., Dortmund (main)) ; Calero Diaz, Liliet (Frascati) ; Cali, Stefano (Frascati) ; Calladine, Ryan (Birmingham U.) ; Calvi, Marta (INFN, Milan Bicocca ; Milan Bicocca U.) ; Calvo Gomez, Miriam (Ramon Llull U., Barcelona) ; Camargo Magalhaes, Patricia (Bristol U.) ; Camboni, Alessandro (U. Barcelona (main)) ; Campana, Pierluigi (Frascati) ; Campora Perez, Daniel Hugo (CERN) ; Campoverde Quezada, Angel Fernando (Beijing, GUCAS) ; Capelli, Simone (INFN, Milan Bicocca ; Milan Bicocca U.) ; Capriotti, Lorenzo (INFN, Bologna ; Bologna U.) ; Carbone, Angelo (INFN, Bologna ; Bologna U.) ; Carboni, Giovanni (INFN, Rome2) ; Cardinale, Roberta (INFN, Genoa ; Genoa U.) ; Cardini, Alessandro (INFN, Cagliari) ; Carli, Ina (Beijing, Inst. High Energy Phys.) ; Carniti, Paolo (INFN, Milan Bicocca ; Milan Bicocca U.) ; Carvalho Akiba, Kazuyoshi (NIKHEF, Amsterdam) ; Casais Vidal, Adrian (U. Santiago de Compostela (main)) ; Casse, Gianluigi (Liverpool U.) ; Cattaneo, Marco (CERN) ; Cavallero, Giovanni (CERN) ; Celani, Sara (Ecole Polytechnique, Lausanne) ; Cerasoli, Jacopo (Marseille, CPPM) ; Chadwick, Abbie Jane (Liverpool U.) ; Chapman, Matthew George (Bristol U.) ; Charles, Matthew (Paris U., VI-VII) ; Charpentier, Philippe (CERN) ; Chatzikonstantinidis, Georgios (Birmingham U.) ; Chavez Barajas, Carlos Alberto (Liverpool U.) ; Chefdeville, Maximilien (Annecy, LAPP) ; Chen, Chen (Tsinghua U., Beijing, CHEP) ; Chen, Shanzhen (INFN, Cagliari) ; Chernov, Aleksei (Cracow, INP) ; Chitic, Stefan-Gabriel (CERN) ; Chobanova, Veronika (U. Santiago de Compostela (main)) ; Cholak, Serhii (Ecole Polytechnique, Lausanne) ; Chrzaszcz, Marcin (Cracow, INP) ; Chubykin, Alexsei (St. Petersburg, INP) ; Chulikov, Vladimir (St. Petersburg, INP) ; Ciambrone, Paolo (Frascati) ; Cicala, Maria Flavia (Warwick U.) ; Cid Vidal, Xabier (U. Santiago de Compostela (main)) ; Ciezarek, Gregory (CERN) ; Clarke, Peter (Edinburgh U.) ; Clemencic, Marco (CERN) ; Cliff, Harry (Cambridge U.) ; Closier, Joel (CERN) ; Cobbledick, John Leslie (Manchester U.) ; Coco, Victor (CERN) ; Coelho, Joao A B (IJCLab, Orsay) ; Cogan, Julien (Marseille, CPPM) ; Cogneras, Eric (Clermont-Ferrand U.) ; Cojocariu, Lucian (Bucharest, IFIN-HH) ; Collins, Paula (CERN) ; Colombo, Tommaso (CERN) ; Congedo, Liliana (INFN, Bari) ; Contu, Andrea (INFN, Cagliari) ; Cooke, Naomi (Birmingham U.) ; Coombs, George (Glasgow U.) ; Corti, Gloria (CERN) ; Costa Sobral, Cayo Mar (Warwick U.) ; Couturier, Benjamin (CERN) ; Craik, Daniel Charles (MIT) ; Crkovská, Jana (Los Alamos) ; Cruz Torres, Melissa Maria (Rio de Janeiro, CBPF) ; Currie, Robert (Edinburgh U.) ; Da Silva, Cesar Luiz (Los Alamos) ; Dall'Occo, Elena (Tech. U., Dortmund (main)) ; Dalseno, Jeremy (U. Santiago de Compostela (main)) ; D'Ambrosio, Carmelo (CERN) ; Danilina, Anna (Moscow, ITEP) ; d'Argent, Philippe (CERN) ; Davis, Adam (Manchester U.) ; De Aguiar Francisco, Oscar (Manchester U.) ; De Bruyn, Kristof (U. Groningen, VSI) ; De Capua, Stefano (Manchester U.) ; De Cian, Michel (Ecole Polytechnique, Lausanne) ; De Miranda, Jussara (Rio de Janeiro, CBPF) ; De Paula, Leandro (Rio de Janeiro Federal U.) ; De Serio, Marilisa (INFN, Bari ; Bari U.) ; De Simone, Dario (Zurich U.) ; De Simone, Patrizia (Frascati) ; de Vries, Jacco (Maastricht U.) ; Dean, Cameron Thomas (Los Alamos) ; Dean, William (U. Michigan, Ann Arbor) ; Decamp, Daniel (Annecy, LAPP) ; Del Buono, Luigi (Paris U., VI-VII) ; Delaney, Blaise (Cambridge U.) ; Dembinski, Hans Peter (Tech. U., Dortmund (main)) ; Dendek, Adam (AGH-UST, Cracow) ; Denysenko, Vadym (Zurich U.) ; Derkach, Denis (Higher Sch. of Economics, Moscow) ; Deschamps, Olivier (Clermont-Ferrand U.) ; Desse, Fabrice (IJCLab, Orsay) ; Dettori, Francesco (INFN, Cagliari ; Cagliari U.) ; Dey, Biplab (Wuhan U.) ; Di Nezza, Pasquale (Frascati) ; Didenko, Sergey (Natl. U. Sci. Tech., Moscow) ; Dieste Maronas, Lorena (U. Santiago de Compostela (main)) ; Dijkstra, Hans (CERN) ; Dobishuk, Vasyl (Kiev, INR) ; Donohoe, Amanda May (University Coll., Dublin) ; Dordei, Francesca (INFN, Cagliari) ; dos Reis, Alberto (Rio de Janeiro, CBPF) ; Douglas, Lauren (Glasgow U.) ; Dovbnya, Anatoliy (Kharkov, KIPT) ; Downes, Anthony Gavin (Annecy, LAPP) ; Dreimanis, Karlis (Liverpool U.) ; Dudek, Maciej Wojciech (Cracow, INP) ; Dufour, Laurent (CERN) ; Duk, Viacheslav (INFN, Perugia) ; Durante, Paolo (CERN) ; Durham, John Matthew (Los Alamos) ; Dutta, Deepanwita (Manchester U.) ; Dziewiecki, Michal (Heidelberg U.) ; Dziurda, Agnieszka (Cracow, INP) ; Dzyuba, Alexey (St. Petersburg, INP) ; Easo, Sajan (Rutherford) ; Egede, Ulrik (Monash U.) ; Egorychev, Victor (Moscow, ITEP) ; Eidelman, Semen (Novosibirsk, IYF ; Novosibirsk State U.) ; Eisenhardt, Stephan (Edinburgh U.) ; Ek-In, Surapat (Ecole Polytechnique, Lausanne) ; Eklund, Lars (Glasgow U.) ; Ely, Scott (Syracuse U.) ; Ene, Alexandru (Bucharest, IFIN-HH) ; Epple, Eliane (Los Alamos) ; Escher, Stephan (Aachen, Tech. Hochsch.) ; Eschle, Jonas Nathanael (Zurich U.) ; Esen, Sevda (NIKHEF, Amsterdam) ; Evans, Timothy (CERN) ; Falabella, Antonio (INFN, Bologna) ; Fan, Jingzhou (Tsinghua U., Beijing, CHEP) ; Fan, Yanting (Beijing, GUCAS) ; Fang, Bo (Wuhan U.) ; Farley, Nathanael (Birmingham U.) ; Farry, Stephen (Liverpool U.) ; Fazzini, Davide (INFN, Milan Bicocca ; Milan Bicocca U.) ; Fedin, Petr (Moscow, ITEP) ; Féo, Mauricio (CERN) ; Fernandez Declara, Placido (CERN) ; Fernandez Prieto, Antonio (U. Santiago de Compostela (main)) ; Ferrari, Fabio (INFN, Bologna ; Bologna U.) ; Ferreira Lopes, Lino (Ecole Polytechnique, Lausanne) ; Ferreira Rodrigues, Fernando (Rio de Janeiro Federal U.) ; Ferreres Sole, Silvia (NIKHEF, Amsterdam) ; Ferrillo, Martina (Zurich U.) ; Ferro-Luzzi, Massimiliano (CERN) ; Filippov, Sergey (Moscow, INR) ; Fini, Rosa Anna (INFN, Bari) ; Fiorini, Massimiliano (INFN, Ferrara ; Ferrara U.) ; Firlej, Miroslaw (AGH-UST, Cracow) ; Fischer, Kamil Leszek (Oxford U.) ; Fitzpatrick, Conor (Manchester U.) ; Fiutowski, Tomasz (AGH-UST, Cracow) ; Fleuret, Frederic (IJCLab, Orsay ; Ecole Polytechnique) ; Fontana, Marianna (CERN) ; Fontanelli, Flavio (INFN, Genoa ; Genoa U.) ; Forty, Roger (CERN) ; Franco Lima, Vinicius (Liverpool U.) ; Franco Sevilla, Manuel (Maryland U., College Park) ; Frank, Markus (CERN) ; Franzoso, Edoardo (INFN, Ferrara) ; Frau, Giulia (Heidelberg U.) ; Frei, Christoph (CERN) ; Friday, David Anthony (Glasgow U.) ; Fu, Jinlin (INFN, Milan) ; Fuehring, Quentin (Tech. U., Dortmund (main)) ; Funk, Wolfgang (CERN) ; Gabriel, Emmy (NIKHEF, Amsterdam) ; Gaintseva, Tatiana (Yandex Sch. Data Anal., Moscow) ; Gallas Torreira, Abraham (U. Santiago de Compostela (main)) ; Galli, Domenico (INFN, Bologna ; Bologna U.) ; Gambetta, Silvia (Edinburgh U.) ; Gan, Yuyue (Tsinghua U., Beijing, CHEP) ; Gandelman, Miriam (Rio de Janeiro Federal U.) ; Gandini, Paolo (INFN, Milan) ; Gao, Yuanning (Peking U., SKLNPT) ; Garau, Michela (INFN, Cagliari) ; Garcia Martin, Luis Miguel (Warwick U.) ; Garcia Moreno, Paula (U. Barcelona (main)) ; García Pardiñas, Julián (Zurich U.) ; Garcia Plana, Beatriz (U. Santiago de Compostela (main)) ; Garcia Rosales, Felipe Andres (IJCLab, Orsay) ; Garrido, Lluis (U. Barcelona (main)) ; Gascon, David (U. Barcelona (main)) ; Gaspar, Clara (CERN) ; Geertsema, Robbert Erik (NIKHEF, Amsterdam) ; Gerick, David (Heidelberg U.) ; Gerken, Louis Lenard (Tech. U., Dortmund (main)) ; Gersabeck, Evelina (Manchester U.) ; Gersabeck, Marco (Manchester U.) ; Gershon, Timothy (Warwick U.) ; Gerstel, Dawid (Marseille, CPPM) ; Ghez, Philippe (Annecy, LAPP) ; Gibson, Valerie (Cambridge U.) ; Giovannetti, Matteo (Frascati ; Rome U., Tor Vergata) ; Gioventù, Alessandra (U. Santiago de Compostela (main)) ; Gironella Gironell, Pere (U. Barcelona (main)) ; Giubega, Lavinia-Helena (Bucharest, IFIN-HH) ; Giugliano, Carmen (INFN, Ferrara ; Ferrara U.) ; Gizdov, Konstantin (Edinburgh U.) ; Gkougkousis, Evangelos Leonidas (CERN) ; Gligorov, Vladimir (Paris U., VI-VII) ; Göbel, Carla (Rio de Janeiro, Pont. U. Catol.) ; Golobardes, Elisabet (Ramon Llull U., Barcelona) ; Golubkov, Dmitry (Moscow, ITEP) ; Golutvin, Andrey (Imperial Coll., London ; Natl. U. Sci. Tech., Moscow) ; Gomes, Alvaro (Rio de Janeiro, CBPF ; UFTM, Uberaba) ; Gomez Fernandez, Sergio (U. Barcelona (main)) ; Goncerz, Mateusz (Cracow, INP) ; Gong, Guanghua (Tsinghua U., Beijing, CHEP) ; Gorbounov, Petr (Moscow, ITEP) ; Gorelov, Igor Vladimirovich (SINP, Moscow) ; Gotti, Claudio (INFN, Milan Bicocca) ; Govorkova, Ekaterina (NIKHEF, Amsterdam) ; Grabowski, Jascha Peter (Heidelberg U.) ; Graciani Diaz, Ricardo (U. Barcelona (main)) ; Grammatico, Thomas (Paris U., VI-VII) ; Granado Cardoso, Luis Alberto (CERN) ; Graugés, Eugeni (U. Barcelona (main)) ; Graverini, Elena (Ecole Polytechnique, Lausanne) ; Graziani, Giacomo (INFN, Florence) ; Grecu, Alexandru (Bucharest, IFIN-HH) ; Greeven, Lex Marinus (NIKHEF, Amsterdam) ; Griffith, Peter (INFN, Ferrara) ; Grillo, Lucia (Manchester U.) ; Gromov, Sergey (Natl. U. Sci. Tech., Moscow) ; Gruber, Lukas (CERN) ; Gruberg Cazon, Barak Raimond (Oxford U.) ; Gu, Chenxi (Tsinghua U., Beijing, CHEP) ; Guarise, Marco (INFN, Ferrara) ; Günther, Paul Andre (Heidelberg U.) ; Gushchin, Evgeny (Moscow, INR) ; Guth, Andreas (Aachen, Tech. Hochsch.) ; Guz, Yury (Serpukhov, IHEP ; CERN) ; Gys, Thierry (CERN) ; Hadavizadeh, Thomas (Monash U.) ; Haefeli, Guido (Ecole Polytechnique, Lausanne) ; Haen, Christophe (CERN) ; Haimberger, Jakob (CERN) ; Haines, Susan (Cambridge U.) ; Halewood-leagas, Tabitha (Liverpool U.) ; Hamilton, Phoebe Meredith (Maryland U., College Park) ; Han, Qundong (CCNU, Wuhan, Inst. Part. Phys.) ; Han, Xiaoxue (Heidelberg U.) ; Hancock, Thomas Henry (Oxford U.) ; Hansmann-Menzemer, Stephanie (Heidelberg U.) ; Harnew, Neville (Oxford U.) ; Harrison, Thomas (Liverpool U.) ; Hasse, Christoph (CERN) ; Hatch, Mark (CERN) ; He, Jibo (Beijing, GUCAS) ; Hecker, Malte (Imperial Coll., London) ; Heijhoff, Kevin (NIKHEF, Amsterdam) ; Heinicke, Kevin (Tech. U., Dortmund (main)) ; Hennequin, Arthur Marius (CERN) ; Hennessy, Karol (Liverpool U.) ; Henry, Louis (INFN, Milan ; Valencia U., IFIC) ; Heuel, Johannes (Aachen, Tech. Hochsch.) ; Hicheur, Adlène (Rio de Janeiro Federal U.) ; Hill, Donal (Oxford U.) ; Hilton, Martha (Manchester U.) ; Hollitt, Sophie Elizabeth (Tech. U., Dortmund (main)) ; Hopchev, Plamen Hristov (Ecole Polytechnique, Lausanne) ; Hu, Jiangqiao (Heidelberg U.) ; Hu, Jifeng (South China Normal U.) ; Hu, Wenhua (CCNU, Wuhan, Inst. Part. Phys.) ; Huang, Wenqian (Beijing, GUCAS) ; Huang, Xiaotao (Wuhan U.) ; Hulsbergen, Wouter (NIKHEF, Amsterdam) ; Hunter, Ross John (Warwick U.) ; Hushchyn, Mikhail (Higher Sch. of Economics, Moscow) ; Hutchcroft, David (Liverpool U.) ; Hynds, Daniel (NIKHEF, Amsterdam) ; Ibis, Philipp (Tech. U., Dortmund (main)) ; Idzik, Marek (AGH-UST, Cracow) ; Ilin, Dmitrii (St. Petersburg, INP) ; Ilten, Philip (Birmingham U.) ; Inglessi, Alexander (St. Petersburg, INP) ; Ishteev, Artur (Natl. U. Sci. Tech., Moscow) ; Ivshin, Kuzma (St. Petersburg, INP) ; Jacobsson, Richard (CERN) ; Jakobsen, Sune (CERN) ; Jans, Eddy (NIKHEF, Amsterdam) ; Jashal, Brij Kishor (Valencia U., IFIC) ; Jawahery, Abolhassan (Maryland U., College Park) ; Jevtic, Vukan (Tech. U., Dortmund (main)) ; Jezabek, Marek (Cracow, INP) ; Jiang, Feng (Tsinghua U., Beijing, CHEP) ; John, Malcolm (Oxford U.) ; Johnson, Daniel (CERN) ; Jones, Christopher (Cambridge U.) ; Jones, Thomas Peter (Warwick U.) ; Jost, Beat (CERN) ; Jurik, Nathan (CERN) ; Kandybei, Sergii (Kharkov, KIPT) ; Kang, Youen (Tsinghua U., Beijing, CHEP) ; Karacson, Matthias (CERN) ; Kariuki, James Mwangi (Bristol U.) ; Kazeev, Nikita (Higher Sch. of Economics, Moscow) ; Kecke, Matthieu (Heidelberg U.) ; Keizer, Floris (Cambridge U. ; CERN) ; Kenzie, Matthew (Warwick U.) ; Ketel, Tjeerd (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Khanji, Basem (CERN) ; Kharisova, Anastasiia (Tomsk Polytechnic U.) ; Kholodenko, Sergei (Serpukhov, IHEP) ; Kim, Kyung Eun (Syracuse U.) ; Kirn, Thomas (Aachen, Tech. Hochsch.) ; Kirsebom, Veronica Soelund (Ecole Polytechnique, Lausanne) ; Kitouni, Ouail (MIT) ; Klaver, Suzanne (NIKHEF, Amsterdam) ; Klimaszewski, Konrad (NCBJ, Swierk) ; Koliiev, Serhii (Kiev, INR) ; Kondybayeva, Almagul (Natl. U. Sci. Tech., Moscow) ; Konoplyannikov, Anatoly (Moscow, ITEP) ; Kopciewicz, Pawel (AGH-UST, Cracow) ; Kopecna, Renata (Heidelberg U.) ; Koppenburg, Patrick (NIKHEF, Amsterdam) ; Korolev, Mikhail (SINP, Moscow) ; Kostiuk, Igor (NIKHEF, Amsterdam ; Kiev, INR) ; Kot, Oleksander (Kiev, INR) ; Kotriakhova, Sofia (St. Petersburg, INP ; INFN, Rome) ; Kravchenko, Polina (St. Petersburg, INP) ; Kravchuk, Leonid (Moscow, INR) ; Krawczyk, Rafal Dominik (CERN) ; Kreps, Michal (Warwick U.) ; Kress, Felix Johannes (Imperial Coll., London) ; Kretzschmar, Sophie Katharina (Aachen, Tech. Hochsch.) ; Krokovny, Pavel (Novosibirsk, IYF ; Novosibirsk State U.) ; Krupa, Wojciech (AGH-UST, Cracow) ; Krzemien, Wojciech (NCBJ, Swierk) ; Kucewicz, Wojciech (AGH-UST, Cracow ; Cracow, INP) ; Kucharczyk, Marcin (Cracow, INP) ; Kudryavtsev, Vasily (Novosibirsk, IYF ; Novosibirsk State U.) ; Kuindersma, Hilbrand Steffen (NIKHEF, Amsterdam) ; Kunde, Gerd Joachim (Los Alamos) ; Kvaratskheliya, Tengiz (Moscow, ITEP) ; Lacarrere, Daniel (CERN) ; Lafferty, George (Manchester U.) ; Lai, Adriano (INFN, Cagliari) ; Lampis, Andrea (INFN, Cagliari) ; Lancierini, Davide (Zurich U.) ; Lane, John Jake (Manchester U.) ; Lane, Richard (Bristol U.) ; Lanfranchi, Gaia (Frascati) ; Langenbruch, Christoph (Aachen, Tech. Hochsch.) ; Langer, Jan (Tech. U., Dortmund (main)) ; Lantwin, Oliver (Zurich U. ; Natl. U. Sci. Tech., Moscow) ; Latham, Thomas (Warwick U.) ; Lazzari, Federico (INFN, Pisa ; U. Siena (main)) ; Le Gac, Renaud (Marseille, CPPM) ; Lee, Sook Hyun (U. Michigan, Ann Arbor) ; Lefèvre, Regis (Clermont-Ferrand U.) ; Leflat, Alexander (SINP, Moscow) ; Legotin, Sergey (Natl. U. Sci. Tech., Moscow) ; Leroy, Olivier (Marseille, CPPM) ; Lesiak, Tadeusz (Cracow, INP) ; Leverington, Blake (Heidelberg U.) ; Li, Hengne (South China Normal U.) ; Li, Lei (Oxford U.) ; Li, Peilian (Heidelberg U.) ; Li, Xuan (Los Alamos) ; Li, Yiming (Beijing, Inst. High Energy Phys.) ; Li, Yutong (Beijing, Inst. High Energy Phys.) ; Li, Zhuoming (Syracuse U.) ; Liang, Xixin (Syracuse U.) ; Lin, Tai-hua (Imperial Coll., London) ; Lindner, Rolf (CERN) ; Lisovskyi, Vitalii (Tech. U., Dortmund (main)) ; Litvinov, Roman (INFN, Cagliari) ; Liu, Guoming (South China Normal U.) ; Liu, Huanhuan (Beijing, GUCAS) ; Liu, Shuaiyi (Beijing, Inst. High Energy Phys.) ; Liu, Xuesong (Tsinghua U., Beijing, CHEP) ; Loi, Angelo (INFN, Cagliari) ; Lomba Castro, Julian (U. Santiago de Compostela (main)) ; Longstaff, Iain (Glasgow U.) ; Lopes, Jose (Rio de Janeiro Federal U.) ; Loustau, Guillermo (Zurich U.) ; Lovell, George Holger (Cambridge U.) ; Lu, Yu (Beijing, Inst. High Energy Phys.) ; Lucchesi, Donatella (INFN, Padua ; U. Padua (main)) ; Luchuk, Stanislav (Moscow, INR) ; Lucio Martinez, Miriam (NIKHEF, Amsterdam) ; Lukashenko, Valeriia (NIKHEF, Amsterdam) ; Luo, Yiheng (Tsinghua U., Beijing, CHEP) ; Lupato, Anna (Manchester U.) ; Luppi, Eleonora (INFN, Ferrara ; Ferrara U.) ; Lupton, Oliver (Warwick U.) ; Lusiani, Alberto (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Lyu, Xiao-Rui (Beijing, GUCAS) ; Ma, Lishuang (Beijing, Inst. High Energy Phys.) ; Maccolini, Serena (INFN, Bologna ; Bologna U.) ; Machefert, Frederic (IJCLab, Orsay) ; Maciuc, Florin (Bucharest, IFIN-HH) ; Macko, Vladimir (Ecole Polytechnique, Lausanne) ; Mackowiak, Patrick (Tech. U., Dortmund (main)) ; Maddrell-Mander, Samuel (Bristol U.) ; Madejczyk, Olga (AGH-UST, Cracow) ; Madhan Mohan, Lakshan Ram (Bristol U.) ; Maev, Oleg (St. Petersburg, INP) ; Maevskiy, Artem (Higher Sch. of Economics, Moscow) ; Maisuzenko, Dmitrii (St. Petersburg, INP) ; Majewski, Maciej Witold (AGH-UST, Cracow) ; Malde, Sneha (Oxford U.) ; Malecki, Bartosz (CERN) ; Malinin, Alexander (Kurchatov Inst., Moscow) ; Maltsev, Timofei (Novosibirsk, IYF ; Novosibirsk State U.) ; Malygina, Hanna (Heidelberg U.) ; Manca, Giulia (INFN, Cagliari ; Cagliari U.) ; Mancinelli, Giampiero (Marseille, CPPM) ; Manera Escalero, Rafel (U. Barcelona (main)) ; Manuzzi, Daniele (INFN, Bologna ; Bologna U.) ; Marangotto, Daniele (INFN, Milan ; U. Milan (main)) ; Maratas, Jan (Clermont-Ferrand U. ; Mindanao State U., Iligan) ; Marchand, Jean François (Annecy, LAPP) ; Marconi, Umberto (INFN, Bologna) ; Mariani, Saverio (INFN, Florence ; CERN) ; Marin Benito, Carla (IJCLab, Orsay) ; Marinangeli, Matthieu (Ecole Polytechnique, Lausanne) ; Marino, Pietro (Ecole Polytechnique, Lausanne) ; Marks, Jörg (Heidelberg U.) ; Marshall, Phillip John (Liverpool U.) ; Martellotti, Giuseppe (INFN, Rome) ; Martinazzoli, Loris (CERN) ; Martinelli, Maurizio (INFN, Milan Bicocca ; Milan Bicocca U.) ; Martinez Santos, Diego (U. Santiago de Compostela (main)) ; Martinez Vidal, Fernando (Valencia U., IFIC) ; Massafferri, André (Rio de Janeiro, CBPF) ; Materok, Marcel (Aachen, Tech. Hochsch.) ; Matev, Rosen (CERN) ; Mathad, Abhijit (Zurich U.) ; Mathe, Zoltan (CERN) ; Matiunin, Viacheslav (Moscow, ITEP) ; Matteuzzi, Clara (INFN, Milan Bicocca) ; Mattioli, Kara Renee (U. Michigan, Ann Arbor) ; Mauri, Andrea (NIKHEF, Amsterdam) ; Maurice, Emilie (IJCLab, Orsay ; Ecole Polytechnique) ; Mauricio, Juan (U. Barcelona (main)) ; Mazurek, Michal Kazimierz (NCBJ, Swierk) ; McCann, Michael (Imperial Coll., London) ; Mcconnell, Lucas (University Coll., Dublin) ; Mcgrath, Tamaki Holly (Manchester U.) ; McNab, Andrew (Manchester U.) ; McNulty, Ronan (University Coll., Dublin) ; Mead, James Vincent (Liverpool U.) ; Meadows, Brian (Cincinnati U.) ; Meaux, Cedric (Marseille, CPPM) ; Meier, Gerwin (Tech. U., Dortmund (main)) ; Meinert, Nis (Rostock U.) ; Melnychuk, Dmytro (NCBJ, Swierk) ; Meloni, Simone (INFN, Milan Bicocca ; Milan Bicocca U.) ; Merk, Marcel (NIKHEF, Amsterdam ; Maastricht U.) ; Merli, Andrea (INFN, Milan) ; Meyer Garcia, Lucas (Rio de Janeiro Federal U.) ; Mikhasenko, Mikhail (CERN) ; Milanes, Diego Alejandro (Colombia, U. Natl.) ; Millard, Edward James (Warwick U.) ; Minard, Marie-Noelle (Annecy, LAPP) ; Minzoni, Luca (INFN, Ferrara ; Ferrara U.) ; Mitchell, Sara Elizabeth (Edinburgh U.) ; Mitreska, Biljana (Manchester U.) ; Mitzel, Dominik Stefan (CERN) ; Mödden, Antje (Tech. U., Dortmund (main)) ; Mohammed, Rizwaan Adeeb (Oxford U.) ; Moise, Razvan Daniel (Imperial Coll., London) ; Mombächer, Titus (Tech. U., Dortmund (main)) ; Monroy, Igancio Alberto (Colombia, U. Natl.) ; Monteil, Stephane (Clermont-Ferrand U.) ; Morandin, Mauro (INFN, Padua) ; Morello, Gianfranco (Frascati) ; Morello, Michael Joseph (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Moron, Jakub (AGH-UST, Cracow) ; Morris, Adam Benjamin (U. Ayatollah Ozma Borujerdi) ; Morris, Andrew George (Warwick U.) ; Mountain, Raymond (Syracuse U.) ; Mu, Hongjie (Tsinghua U., Beijing, CHEP) ; Muheim, Franz (Edinburgh U.) ; Mukherjee, Maitreyee (CCNU, Wuhan, Inst. Part. Phys.) ; Mulder, Mick (CERN) ; Müller, Dominik (CERN) ; Müller, Katharina (Zurich U.) ; Murphy, Colm Harold (Oxford U.) ; Murray, Donal (Manchester U.) ; Muzzetto, Piera (INFN, Cagliari) ; Naik, Paras (Bristol U.) ; Nakada, Tatsuya (Ecole Polytechnique, Lausanne) ; Nandakumar, Raja (Rutherford) ; Nanut, Tara (Ecole Polytechnique, Lausanne) ; Nasteva, Irina (Rio de Janeiro Federal U.) ; Needham, Matthew (Edinburgh U.) ; Neri, Ilaria (INFN, Ferrara ; Ferrara U.) ; Neri, Nicola (INFN, Milan ; U. Milan (main)) ; Neubert, Sebastian (Bonn U.) ; Neufeld, Niko (CERN) ; Newcombe, Ryan (Imperial Coll., London) ; Nguyen, Thi Dung (Ecole Polytechnique, Lausanne) ; Nguyen-Mau, Chung (Ecole Polytechnique, Lausanne) ; Niel, Elisabeth Maria (IJCLab, Orsay) ; Nieswand, Simon (Aachen, Tech. Hochsch.) ; Nikitin, Nikolay (SINP, Moscow) ; Nolte, Niklas Stefan (CERN) ; Nunez, Cynthia (U. Michigan, Ann Arbor) ; Oblakowska-Mucha, Agnieszka (AGH-UST, Cracow) ; Obraztsov, Vladimir (Serpukhov, IHEP) ; O'Hanlon, Daniel Patrick (Bristol U.) ; Oldeman, Rudolf (INFN, Cagliari ; Cagliari U.) ; Onderwater, Gerco (U. Groningen, VSI) ; Ossowska, Anna (Cracow, INP) ; Otalora Goicochea, Juan Martin (Rio de Janeiro Federal U.) ; Ovsiannikova, Tatiana (Moscow, ITEP) ; Owen, Patrick (Zurich U.) ; Oyanguren, Maria Aranzazu (Valencia U., IFIC) ; Pagare, Bhagyashree (Warwick U.) ; Pais, Preema Rennee (CERN) ; Pajero, Tommaso (INFN, Pisa ; CERN ; Pisa, Scuola Normale Superiore) ; Palano, Antimo (INFN, Bari) ; Palutan, Matteo (Frascati) ; Pan, Yue (Manchester U.) ; Panshin, Gennady (Tomsk Polytechnic U.) ; Papanestis, Antonios (Rutherford) ; Pappagallo, Marco (INFN, Bari ; Bari U.) ; Pappalardo, Luciano (INFN, Ferrara ; Ferrara U.) ; Pappenheimer, Cheryl (Cincinnati U.) ; Parker, William (Maryland U., College Park) ; Parkes, Christopher (Manchester U.) ; Parkinson, Christopher John (U. Santiago de Compostela (main)) ; Passalacqua, Barbara (INFN, Ferrara) ; Passaleva, Giovanni (INFN, Florence) ; Pastore, Alessandra (INFN, Bari) ; Patel, Mitesh (Imperial Coll., London) ; Patrignani, Claudia (INFN, Bologna ; Bologna U.) ; Pawley, Christopher James (Maastricht U.) ; Pearce, Alex (CERN) ; Pellegrino, Antonio (NIKHEF, Amsterdam) ; Pepe Altarelli, Monica (CERN) ; Perazzini, Stefano (INFN, Bologna) ; Pereima, Dmitrii (Moscow, ITEP) ; Perret, Pascal (Clermont-Ferrand U.) ; Petridis, Konstantinos (Bristol U.) ; Petrolini, Alessandro (INFN, Genoa ; Genoa U.) ; Petrov, Aleksandr (Kurchatov Inst., Moscow) ; Petrucci, Stefano (Edinburgh U.) ; Petruzzo, Marco (INFN, Milan) ; Philippov, Anton (Yandex Sch. Data Anal., Moscow) ; Pica, Lorenzo (INFN, Pisa) ; Piccini, Mauro (INFN, Perugia) ; Pietrzyk, Boleslaw (Annecy, LAPP) ; Pietrzyk, Guillaume (Ecole Polytechnique, Lausanne) ; Pili, Martina (Oxford U.) ; Pinci, Davide (INFN, Rome) ; Pinzino, Jacopo (CERN) ; Pisani, Flavio (CERN) ; Piucci, Alessio (Heidelberg U.) ; PK, Resmi (Marseille, CPPM) ; Placinta, Vlad-Mihai (Bucharest, IFIN-HH) ; Playfer, Stephen (Edinburgh U.) ; Plews, Jonathan (Birmingham U.) ; Plo Casasus, Maximo (U. Santiago de Compostela (main)) ; Polci, Francesco (Paris U., VI-VII) ; Poli Lener, Marco (Frascati) ; Poliakova, Mariia (Syracuse U.) ; Poluektov, Anton (Marseille, CPPM) ; Polukhina, Natalia (Natl. U. Sci. Tech., Moscow ; Lebedev Inst.) ; Polyakov, Ivan (Syracuse U.) ; Polycarpo, Erica (Rio de Janeiro Federal U.) ; Pomery, Gabriela Johanna (Bristol U.) ; Ponce, Sebastien (CERN) ; Popov, Alexander (Serpukhov, IHEP) ; Popov, Dmitry (Beijing, GUCAS ; CERN) ; Popov, Sergei (Yandex Sch. Data Anal., Moscow) ; Poslavskii, Stanislav (Serpukhov, IHEP) ; Prasanth, Kodassery (Cracow, INP) ; Promberger, Laura (CERN) ; Prouve, Claire (U. Santiago de Compostela (main)) ; Pugatch, Valery (Kiev, INR) ; Puig Navarro, Albert (Zurich U.) ; Pullen, Hannah Louise (Oxford U.) ; Punzi, Giovanni (INFN, Pisa ; U. Pisa (main)) ; Qian, Wenbin (Beijing, GUCAS) ; Qin, Jia-Jia (Beijing, GUCAS) ; Quagliani, Renato (Paris U., VI-VII) ; Quintana, Boris (Annecy, LAPP) ; Raab, Naomi Veronika (University Coll., Dublin) ; Rabadan Trejo, Raul Iraq (Marseille, CPPM) ; Rachwal, Bartlomiej (AGH-UST, Cracow) ; Rademacker, Jonas (Bristol U.) ; Rama, Matteo (INFN, Pisa) ; Ramos Pernas, Miguel (Warwick U.) ; Rangel, Murilo (Rio de Janeiro Federal U.) ; Ratnikov, Fedor (Yandex Sch. Data Anal., Moscow ; Higher Sch. of Economics, Moscow) ; Raven, Gerhard (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Reboud, Meril (Annecy, LAPP) ; Redi, Federico (Ecole Polytechnique, Lausanne) ; Reiss, Florian (Paris U., VI-VII) ; Remon Alepuz, Clara (Valencia U., IFIC) ; Ren, Zan (Tsinghua U., Beijing, CHEP) ; Renaudin, Victor (Oxford U.) ; Ribatti, Roberto (INFN, Pisa) ; Ricciardi, Stefania (Rutherford) ; Richards, Daniel Stephen (Rutherford) ; Rinnert, Kurt (Liverpool U.) ; Robbe, Patrick (IJCLab, Orsay) ; Robert, Arnaud (Paris U., VI-VII) ; Robertson, Gary (Edinburgh U.) ; Rodrigues, Ana Barbara (Ecole Polytechnique, Lausanne) ; Rodrigues, Eduardo (Liverpool U.) ; Rodriguez Lopez, Jairo Alexis (Colombia, U. Natl.) ; Rollings, Alexandra Paige (Oxford U.) ; Roloff, Philipp (CERN) ; Romanovskiy, Vladimir (Serpukhov, IHEP) ; Romero Lamas, Marcos (U. Santiago de Compostela (main)) ; Romero Vidal, Antonio (U. Santiago de Compostela (main)) ; Roth, Jordan Daniel (U. Michigan, Ann Arbor) ; Rotondo, Marcello (Frascati) ; Rudolph, Matthew Scott (Syracuse U.) ; Ruf, Thomas (CERN) ; Ruiz Vidal, Joan (Valencia U., IFIC) ; Ryzhikov, Artem (Higher Sch. of Economics, Moscow) ; Ryzka, Jakub (AGH-UST, Cracow) ; Saborido Silva, Juan Jose (U. Santiago de Compostela (main)) ; Sagidova, Naylya (St. Petersburg, INP) ; Sahoo, Niladribihari (Warwick U.) ; Saitta, Biagio (INFN, Cagliari ; Cagliari U.) ; Sanchez Gonzalo, David (U. Barcelona (main)) ; Sanchez Gras, Cristina (NIKHEF, Amsterdam) ; Sanchez Mayordomo, Carlos (Valencia U., IFIC) ; Santacesaria, Roberta (INFN, Rome) ; Santamarina Rios, Cibran (U. Santiago de Compostela (main)) ; Santimaria, Marco (Frascati) ; Santovetti, Emanuele (INFN, Rome2 ; Rome U., Tor Vergata) ; Saranin, Danila (Natl. U. Sci. Tech., Moscow) ; Sarpis, Gediminas (Manchester U.) ; Sarpis, Minaugas (Bonn U.) ; Sarti, Alessio (INFN, Rome) ; Satriano, Celestina (INFN, Rome ; Basilicata U., Potenza) ; Satta, Alessia (INFN, Rome2) ; Saur, Miroslav (Beijing, GUCAS) ; Savrina, Darya (Moscow, ITEP ; SINP, Moscow) ; Sazak, Halime (Clermont-Ferrand U.) ; Scantlebury Smead, Luke George (Oxford U.) ; Schael, Stefan (Aachen, Tech. Hochsch.) ; Schellenberg, Margarete (Tech. U., Dortmund (main)) ; Schiller, Manuel (Glasgow U.) ; Schindler, Heinrich (CERN) ; Schmelling, Michael (Heidelberg, Max Planck Inst.) ; Schmelzer, Timon (Tech. U., Dortmund (main)) ; Schmidt, Burkhard (CERN) ; Schneider, Olivier (Ecole Polytechnique, Lausanne) ; Schopper, Andreas (CERN) ; Schubiger, Maxime (NIKHEF, Amsterdam) ; Schulte, Sebastian (Ecole Polytechnique, Lausanne) ; Schune, Marie Helene (IJCLab, Orsay) ; Schwemmer, Rainer (CERN) ; Sciascia, Barbara (Frascati) ; Sciubba, Adalberto (INFN, Rome) ; Sellam, Sara (U. Santiago de Compostela (main)) ; Semennikov, Alexander (Moscow, ITEP) ; Senghi Soares, Mara (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Sergi, Antonino (Birmingham U. ; CERN) ; Serra, Nicola (Zurich U.) ; Serrano, Justine (Marseille, CPPM) ; Sestini, Lorenzo (INFN, Padua) ; Seuthe, Alex (Tech. U., Dortmund (main)) ; Seyfert, Paul (CERN) ; Shangase, Desmond Mzamo (U. Michigan, Ann Arbor) ; Shapkin, Mikhail (Serpukhov, IHEP) ; Shchemerov, Ivan (Natl. U. Sci. Tech., Moscow) ; Shchutska, Lesya (Ecole Polytechnique, Lausanne) ; Shears, Tara (Liverpool U.) ; Shekhtman, Lev (Novosibirsk, IYF ; Novosibirsk State U.) ; Shevchenko, Vladimir (Kurchatov Inst., Moscow) ; Shields, Edward Brendan (INFN, Milan Bicocca ; Milan Bicocca U.) ; Shmanin, Evgenii (Natl. U. Sci. Tech., Moscow) ; Shupperd, Joseph David (Syracuse U.) ; Siddi, Benedetto Gianluca (INFN, Ferrara) ; Silva Coutinho, Rafael (Zurich U.) ; Simi, Gabriele (INFN, Padua) ; Simone, Saverio (INFN, Bari ; Bari U.) ; Skiba, Igor (INFN, Ferrara ; Ferrara U.) ; Skidmore, Nicola (Bonn U.) ; Skwarnicki, Tomasz (Syracuse U.) ; Slater, Mark (Birmingham U.) ; Smallwood, Jennifer Clare (Oxford U.) ; Smeaton, John Gordon (Cambridge U.) ; Smetkina, Anastasia (Moscow, ITEP) ; Smith, Eluned (Aachen, Tech. Hochsch.) ; Smith, Mark (Imperial Coll., London) ; Snoch, Aleksandra (NIKHEF, Amsterdam) ; Soares, Marcelo (INFN, Bologna) ; Soares Lavra, Lais (Clermont-Ferrand U.) ; Sokoloff, Michael (Cincinnati U.) ; Soler, Paul (Glasgow U.) ; Solovev, Aleksandr (St. Petersburg, INP) ; Solovyev, Ivan (St. Petersburg, INP) ; Souza De Almeida, Felipe Luan (Rio de Janeiro Federal U.) ; Souza De Paula, Bruno (Rio de Janeiro Federal U.) ; Spaan, Bernhard (Tech. U., Dortmund (main)) ; Spadaro Norella, Elisabetta (INFN, Milan ; U. Milan (main)) ; Spradlin, Patrick (Glasgow U.) ; Stagni, Federico (CERN) ; Stahl, Marian (Cincinnati U.) ; Stahl, Sascha (CERN) ; Stefko, Pavol (Ecole Polytechnique, Lausanne) ; Steinkamp, Olaf (Zurich U. ; Natl. U. Sci. Tech., Moscow) ; Stemmle, Simon (Heidelberg U.) ; Stenyakin, Oleg (Serpukhov, IHEP) ; Stevens, Holger (Tech. U., Dortmund (main)) ; Stone, Sheldon (Syracuse U.) ; Stramaglia, Maria Elena (Ecole Polytechnique, Lausanne) ; Straticiuc, Mihai (Bucharest, IFIN-HH) ; Strekalina, Daria (Natl. U. Sci. Tech., Moscow) ; Strokov, Sergey (Tomsk Polytechnic U.) ; Suljik, Fidan (Oxford U.) ; Sun, Jiayin (INFN, Cagliari) ; Sun, Liang (Wuhan U.) ; Sun, Yipeng (Maryland U., College Park) ; Svihra, Peter (Manchester U.) ; Swallow, Paul Nathaniel (Birmingham U.) ; Swientek, Krzysztof (AGH-UST, Cracow) ; Szabelski, Adam (NCBJ, Swierk) ; Szumlak, Tomasz (AGH-UST, Cracow) ; Szymanski, Maciej Pawel (CERN) ; Taneja, Shantam (Manchester U.) ; Tang, Zhipeng (Tsinghua U., Beijing, CHEP) ; Tekampe, Tobias (Tech. U., Dortmund (main)) ; Teubert, Frederic (CERN) ; Thomas, Eric (CERN) ; Thomson, Kayleigh Anne (Liverpool U.) ; Tilley, Matthew James (Imperial Coll., London) ; Tisserand, Vincent (Clermont-Ferrand U.) ; T'Jampens, Stephane (Annecy, LAPP) ; Tobin, Mark (Beijing, Inst. High Energy Phys.) ; Tolk, Siim (CERN) ; Tomassetti, Luca (INFN, Ferrara ; Ferrara U.) ; Torres Machado, Diego (Rio de Janeiro, CBPF) ; Tou, Da Yu (Paris U., VI-VII) ; Traill, Murdo (Glasgow U.) ; Tran, Minh Tâm (Ecole Polytechnique, Lausanne) ; Trifonova, Ekaterina (Natl. U. Sci. Tech., Moscow) ; Trippl, Carina (Ecole Polytechnique, Lausanne) ; Tsaregorodtsev, Andrei (Marseille, CPPM) ; Tuci, Giulia (INFN, Pisa ; U. Pisa (main)) ; Tully, Alison (Ecole Polytechnique, Lausanne) ; Tuning, Niels (NIKHEF, Amsterdam) ; Ukleja, Artur (NCBJ, Swierk) ; Unverzagt, Daniel Joachim (Heidelberg U.) ; Usachov, Andrii (NIKHEF, Amsterdam) ; Ustyuzhanin, Andrey (Yandex Sch. Data Anal., Moscow ; Higher Sch. of Economics, Moscow) ; Uwer, Ulrich (Heidelberg U.) ; Vagner, Alexander (Tomsk Polytechnic U.) ; Vagnoni, Vincenzo (INFN, Bologna) ; Valassi, Andrea (CERN) ; Valenti, Giovanni (INFN, Bologna) ; Valls Canudas, Nuria (U. Barcelona (main)) ; van Beuzekom, Martinus (NIKHEF, Amsterdam) ; Van Hecke, Hubert (Los Alamos) ; van Herwijnen, Eric (Natl. U. Sci. Tech., Moscow) ; Van Hulse, Charlotte Barbara (University Coll., Dublin) ; van Veghel, Maarten (U. Groningen, VSI) ; Vazquez Gomez, Ricardo (U. Santiago de Compostela (main)) ; Vazquez Regueiro, Pablo (U. Santiago de Compostela (main)) ; Vázquez Sierra, Carlos (NIKHEF, Amsterdam) ; Vecchi, Stefania (INFN, Ferrara) ; Velthuis, Jaap (Bristol U.) ; Veltri, Michele (INFN, Florence ; U. Urbino (main)) ; Venkateswaran, Aravindhan (Syracuse U.) ; Veronesi, Michele (NIKHEF, Amsterdam) ; Vesterinen, Mika (Warwick U.) ; Vieira, Daniel (Cincinnati U.) ; Vieites Diaz, Maria (Ecole Polytechnique, Lausanne) ; Viemann, Harald (Rostock U.) ; Vilasis-Cardona, Xavier (Ramon Llull U., Barcelona) ; Vilella Figueras, Eva (Liverpool U.) ; Vincent, Pascal (Paris U., VI-VII) ; Vitali, Giacomo (INFN, Pisa) ; Vollhardt, Achim (Zurich U.) ; Vom Bruch, Dorothea (Paris U., VI-VII) ; Vorobyev, Alexey (St. Petersburg, INP) ; Vorobyev, Vitaly (Novosibirsk, IYF ; Novosibirsk State U.) ; Voropaev, Nikolai (St. Petersburg, INP) ; Waldi, Roland (Rostock U.) ; Walsh, John (INFN, Pisa) ; Wang, Chishuai (Heidelberg U.) ; Wang, Jianqiao (Tsinghua U., Beijing, CHEP) ; Wang, Jike (Wuhan U.) ; Wang, Jialu (Peking U., SKLNPT) ; Wang, Jianchun (Beijing, Inst. High Energy Phys.) ; Wang, Mengzhen (Tsinghua U., Beijing, CHEP) ; Wang, Rui (Bristol U.) ; Wang, Yilong (CCNU, Wuhan, Inst. Part. Phys.) ; Wang, Zhenzi (Zurich U.) ; Ward, David (Cambridge U.) ; Wark, Heather Mckenzie (Liverpool U.) ; Watson, Nigel (Birmingham U.) ; Weber, Steffen Georg (Paris U., VI-VII) ; Websdale, David (Imperial Coll., London) ; Weisser, Constantin (MIT) ; Westhenry, Benedict Donald C (Bristol U.) ; White, Dylan James (Manchester U.) ; Whitehead, Mark (Bristol U.) ; Wiedner, Dirk (Tech. U., Dortmund (main)) ; Wilkinson, Guy (Oxford U.) ; Wilkinson, Michael (Syracuse U.) ; Williams, Ifan (Cambridge U.) ; Williams, Mike (MIT) ; Williams, Mark Richard James (Edinburgh U.) ; Wilson, Fergus (Rutherford) ; Wislicki, Wojciech (NCBJ, Swierk) ; Witek, Mariusz (Cracow, INP) ; Witola, Lukas (Heidelberg U.) ; Wormser, Guy (IJCLab, Orsay) ; Wotton, Stephen (Cambridge U.) ; Wu, Hangyi (Syracuse U.) ; Wyllie, Kenneth (CERN) ; Xiang, Zhiyu (Beijing, GUCAS) ; Xiao, Dong (CCNU, Wuhan, Inst. Part. Phys.) ; Xie, Yuehong (CCNU, Wuhan, Inst. Part. Phys.) ; Xing, Hongxi (South China Normal U.) ; Xu, Ao (Peking U., SKLNPT) ; Xu, Jingyi (Beijing, GUCAS) ; Xu, Li (Tsinghua U., Beijing, CHEP) ; Xu, Menglin (CCNU, Wuhan, Inst. Part. Phys.) ; Xu, Qingnian (Beijing, GUCAS) ; Xu, Zhihao (Beijing, GUCAS) ; Xu, Zehua (Peking U., SKLNPT) ; Yang, Di (Tsinghua U., Beijing, CHEP) ; Yang, Youhua (Beijing, GUCAS) ; Yang, Zhenwei (Tsinghua U., Beijing, CHEP) ; Yang, Zishuo (Maryland U., College Park) ; Yao, Yuezhe (Syracuse U.) ; Yeomans, Lauren Emma (Liverpool U.) ; Yin, Hang (CCNU, Wuhan, Inst. Part. Phys.) ; Yu, Jiesheng (Hunan U.) ; Yuan, Xuhao (Syracuse U.) ; Yushchenko, Oleg (Serpukhov, IHEP) ; Zarebski, Kristian Alexander (Birmingham U.) ; Zavertyaev, Mikhail (Heidelberg, Max Planck Inst. ; Lebedev Inst.) ; Zdybal, Milosz (Cracow, INP) ; Zenaiev, Oleksandr (CERN) ; Zeng, Ming (Tsinghua U., Beijing, CHEP) ; Zhang, Dongliang (CCNU, Wuhan, Inst. Part. Phys.) ; Zhang, Liming (Tsinghua U., Beijing, CHEP) ; Zhang, Shunan (Peking U., SKLNPT) ; Zhang, Yanxi (CERN) ; Zhelezov, Alexey (Heidelberg U.) ; Zheng, Yangheng (Beijing, GUCAS) ; Zhou, Xiaokang (Beijing, GUCAS) ; Zhou, Yixiong (Beijing, GUCAS) ; Zhu, Xianglei (Tsinghua U., Beijing, CHEP) ; Zhukov, Valery (Aachen, Tech. Hochsch. ; SINP, Moscow) ; Zonneveld, Jennifer Brigitta (Edinburgh U.) ; Zucchelli, Stefano (INFN, Bologna ; Bologna U.) ; Zuliani, Davide (INFN, Padua) ; Zunica, Gianluca (Manchester U.)

Corporate Author(s) LHCb Collaboration
Publication 2021-03-06
Imprint 14 Sep 2020
Number of pages 11
Note All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-023.html (LHCb public pages)
In: Phys. Rev. Lett. 126 (2021) 092001
DOI 10.1103/PhysRevLett.126.092001
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords QCD ; exotics ; quarkonium ; spectroscopy ; particle and resonance production
Abstract The production of $\chi_{c1}(3872)$ and $\psi(2S)$ hadrons is studied as a function of charged particle multiplicity in $pp$ collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2 fb$^{-1}$. For both states, the fraction that is produced promptly at the collision vertex is found to decrease as charged particle multiplicity increases. The ratio of $\chi_{c1}(3872)$ to $\psi(2S)$ cross-sections for promptly produced particles is also found to decrease with multiplicity, while no significant dependence on multiplicity is observed for the equivalent ratio of particles produced away from the collision vertex in $b$-hadron decays. Comparisons with model calculations and implications for the binding energy of the $\chi_{c1}(3872)$ state are discussed.
Related document supersedes: LHCb-CONF-2019-005
Copyright/License preprint: © 2020-2024 CERN (License: CC-BY-4.0)
publication: © 2021-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: [email protected]


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