CERN Accelerating science

Article
Report number arXiv:1909.01010 ; CERN-EP-2019-172 ; LHCb-PAPER-2019-022
Title Search for the lepton-flavour violating decays $B^+ \to K^+ {\mu}^{\pm} e^{\mp}$
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.) ; Aidala, Christine Angela (U. Michigan, Ann Arbor) ; Ajaltouni, Ziad (Clermont-Ferrand U.) ; Akar, Simon (Cincinnati U.) ; Albicocco, Pietro (Frascati) ; Albrecht, Johannes (Tech. U., Dortmund (main)) ; Alessio, Federico (CERN) ; Alexander, Michael (Glasgow U.) ; Alfonso Albero, Alejandro (U. Barcelona (main)) ; Alkhazov, Georgy (St. Petersburg, INP) ; Alvarez Cartelle, Paula (Imperial Coll., London) ; Alves Jr, Antonio Augusto (U. Santiago de Compostela (main)) ; Amato, Sandra (Rio de Janeiro Federal U.) ; Amhis, Yasmine (Orsay, LAL) ; An, Liupan (INFN, Florence) ; Anderlini, Lucio (INFN, Florence) ; Andreassi, Guido (Ecole Polytechnique, Lausanne) ; Andreotti, Mirco (INFN, Ferrara) ; Andrews, Jason (Maryland U., College Park) ; Archilli, Flavio (Heidelberg U.) ; d'Argent, Philippe (Heidelberg U.) ; Arnau Romeu, Joan (Marseille, CPPM) ; 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 (INFN, Cagliari) ; Bachmann, Sebastian (Heidelberg U.) ; Back, John (Warwick U.) ; Baker, Sophie (Imperial Coll., London) ; Balagura, Vladislav (Orsay, LAL ; Ecole Polytechnique) ; Baldini, Wander (INFN, Ferrara ; CERN) ; Baranov, Alexander (Yandex Sch. Data Anal., Moscow) ; Barlow, Roger (Manchester U.) ; Barsuk, Sergey (Orsay, LAL) ; Barter, William (Imperial Coll., London) ; Bartolini, Matteo (INFN, Genoa ; Genoa U.) ; Baryshnikov, Fedor (Natl. U. Sci. Tech., Moscow) ; Batozskaya, Varvara (NCBJ, Swierk) ; Batsukh, Baasansuren (Syracuse U.) ; Battig, Alexander (Tech. U., Dortmund (main)) ; Battista, Vincenzo (Ecole Polytechnique, Lausanne) ; 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.) ; Bel, Lennaert (NIKHEF, Amsterdam) ; Belavin, Vladislav (Yandex Sch. Data Anal., Moscow) ; Belin, Samuel (INFN, Cagliari) ; Beliy, Nikita (Beijing, GUCAS) ; Bellee, Violaine (Ecole Polytechnique, Lausanne) ; Belous, Konstantin (Serpukhov, IHEP) ; Belyaev, Ivan (Moscow, ITEP) ; Ben-Haim, Eli (Paris U., VI-VII) ; Bencivenni, Giovanni (Frascati) ; Benson, Sean (NIKHEF, Amsterdam) ; Beranek, Sarah (Aachen, Tech. Hochsch.) ; Berezhnoy, Alexander (SINP, Moscow) ; Bernet, Roland (Zurich U.) ; Berninghoff, Daniel (Heidelberg U.) ; 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.) ; van Beuzekom, Martinus (NIKHEF, Amsterdam) ; Bezshyiko, Iaroslava (Zurich U.) ; Bhasin, Srishti (Bristol U.) ; Bhom, Jihyun (Cracow, INP) ; Bieker, Martin Stefan (Tech. U., Dortmund (main)) ; Bifani, Simone (Birmingham U.) ; Billoir, Pierre (Paris U., VI-VII) ; Birnkraut, Alex (Tech. U., Dortmund (main)) ; 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.) ; Bocci, Valerio (INFN, Rome) ; 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. ; CERN) ; Borisyak, Maxim (Yandex Sch. Data Anal., Moscow) ; Borsato, Martino (Heidelberg U.) ; Borsuk, Jozef Tomasz (Cracow, INP) ; Boubdir, Meriem (Aachen, Tech. Hochsch.) ; Bowcock, Themistocles (Liverpool U.) ; Bozzi, Concezio (INFN, Ferrara ; CERN) ; Braun, Svende (Heidelberg U.) ; Brea Rodriguez, Alexandre (U. Santiago de Compostela (main)) ; Brodski, Michael (CERN) ; Brodzicka, Jolanta (Cracow, INP) ; Brossa Gonzalo, Arnau (Warwick U.) ; Brundu, Davide (INFN, Cagliari ; CERN) ; Buchanan, Emma (Bristol U.) ; Buonaura, Annarita (Zurich U.) ; Burr, Christopher (Manchester U.) ; Bursche, Albert (INFN, Cagliari) ; 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.) ; Cali, Stefano (Frascati) ; Calladine, Ryan (Birmingham U.) ; Calvi, Marta (INFN, Milan Bicocca ; Milan Bicocca U.) ; Calvo Gomez, Miriam (U. Barcelona (main) ; Ramon Llull U., Barcelona) ; Camboni, Alessandro (U. Barcelona (main) ; Ramon Llull U., Barcelona) ; Campana, Pierluigi (Frascati) ; Campora Perez, Daniel Hugo (CERN) ; 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) ; 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 (INFN, Genoa) ; Cenci, Riccardo (INFN, Pisa ; U. Pisa (main)) ; Chapman, Matthew George (Bristol U.) ; Charles, Matthew (Paris U., VI-VII ; CERN) ; Charpentier, Philippe (CERN) ; Chatzikonstantinidis, Georgios (Birmingham U.) ; Chefdeville, Maximilien (Annecy, LAPP) ; Chekalina, Viktoriia (Yandex Sch. Data Anal., Moscow) ; 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)) ; Chrzaszcz, Marcin (CERN) ; Chubykin, Alexsei (St. Petersburg, INP) ; Ciambrone, Paolo (Frascati) ; Cicala, Maria Flavia (Warwick U.) ; Cid Vidal, Xabier (U. Santiago de Compostela (main)) ; Ciezarek, Gregory (CERN) ; Cindolo, Federico (INFN, Bologna) ; 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 (Orsay, LAL) ; Cogan, Julien (Marseille, CPPM) ; Cogneras, Eric (Clermont-Ferrand U.) ; Cojocariu, Lucian (Bucharest, IFIN-HH) ; Collins, Paula (CERN) ; Colombo, Tommaso (CERN) ; Comerma-Montells, Albert (Heidelberg U.) ; Contu, Andrea (INFN, Cagliari) ; Cooke, Naomi (Birmingham U.) ; Coombs, George (Glasgow U.) ; Coquereau, Samuel (U. Barcelona (main)) ; Corti, Gloria (CERN) ; Costa Sobral, Cayo Mar (Warwick U.) ; Couturier, Benjamin (CERN) ; Cowan, Greig (Edinburgh U.) ; Craik, Daniel Charles (MIT) ; Crocombe, Andrew (Warwick U.) ; Cruz Torres, Melissa Maria (Rio de Janeiro, CBPF) ; Currie, Robert (Edinburgh U.) ; D'Ambrosio, Carmelo (CERN) ; Da Silva, Cesar Luiz (Los Alamos) ; Dall'Occo, Elena (NIKHEF, Amsterdam) ; Dalseno, Jeremy (U. Santiago de Compostela (main) ; Bristol U.) ; Danilina, Anna (Moscow, ITEP) ; Davis, Adam (Manchester U.) ; De Aguiar Francisco, Oscar (CERN) ; De Bruyn, Kristof (CERN) ; 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, Patrizia (Frascati) ; 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 (Heidelberg, Max Planck Inst.) ; Demmer, Moritz (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 (Orsay, LAL) ; Dettori, Francesco (INFN, Cagliari) ; Dey, Biplab (CCNU, Wuhan, Inst. Part. Phys.) ; Di Canto, Angelo (CERN) ; Di Nezza, Pasquale (Frascati) ; Didenko, Sergey (Natl. U. Sci. Tech., Moscow) ; Dijkstra, Hans (CERN) ; Dordei, Francesca (INFN, Cagliari) ; Dorigo, Mirco (INFN, Pisa ; INFN, Trieste) ; Dosil Suárez, Alvaro (U. Santiago de Compostela (main)) ; Douglas, Lauren (Glasgow U.) ; Dovbnya, Anatoliy (Kharkov, KIPT) ; Dreimanis, Karlis (Liverpool U.) ; Dudek, Maciej Wojciech (Cracow, INP) ; Dufour, Laurent (CERN) ; Dujany, Giulio (Paris U., VI-VII) ; Durante, Paolo (CERN) ; Durham, John Matthew (Los Alamos) ; Dutta, Deepanwita (Manchester U.) ; Dzhelyadin, Rustem (Serpukhov, IHEP) ; Dziewiecki, Michal (Heidelberg U.) ; Dziurda, Agnieszka (Cracow, INP) ; Dzyuba, Alexey (St. Petersburg, INP) ; Easo, Sajan (Rutherford) ; Egede, Ulrik (Imperial Coll., London) ; Egorychev, Victor (Moscow, ITEP) ; Eidelman, Semen (Novosibirsk, IYF ; Novosibirsk State U.) ; Eisenhardt, Stephan (Edinburgh U.) ; Eitschberger, Ulrich (Tech. U., Dortmund (main)) ; Ek-In, Surapat (Ecole Polytechnique, Lausanne) ; Ekelhof, Robert (Tech. U., Dortmund (main)) ; Eklund, Lars (Glasgow U.) ; Ely, Scott (Syracuse U.) ; Ene, Alexandru (Bucharest, IFIN-HH) ; Escher, Stephan (Aachen, Tech. Hochsch.) ; Esen, Sevda (NIKHEF, Amsterdam) ; Evans, Timothy (Cincinnati U.) ; Falabella, Antonio (INFN, Bologna) ; Farley, Nathanael (Birmingham U.) ; Farry, Stephen (Liverpool U.) ; Fazzini, Davide (Orsay, LAL) ; 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) ; 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 (CERN) ; Fiutowski, Tomasz (AGH-UST, Cracow) ; Fleuret, Frederic (Orsay, LAL ; 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) ; Frei, Christoph (CERN) ; Friday, David Anthony (Glasgow U.) ; Fu, Jinlin (INFN, Milan ; U. Milan (main)) ; Funk, Wolfgang (CERN) ; Féo, Mauricio (CERN) ; Gabriel, Emmy (Edinburgh U.) ; Gallas Torreira, Abraham (U. Santiago de Compostela (main)) ; Galli, Domenico (INFN, Bologna ; Bologna U.) ; Gallorini, Stefano (INFN, Padua) ; Gambetta, Silvia (Edinburgh U.) ; Gan, Yuyue (Tsinghua U., Beijing, CHEP) ; Gandelman, Miriam (Rio de Janeiro Federal U.) ; Gandini, Paolo (INFN, Milan) ; Gao, Yuanning (Tsinghua U., Beijing, CHEP) ; Garcia Martin, Luis Miguel (Valencia U., IFIC) ; Garcia Plana, Beatriz (U. Santiago de Compostela (main)) ; Garcia Rosales, Felipe Andres (Orsay, LAL) ; García Pardiñas, Julián (Zurich U.) ; Garra Tico, Jordi (Cambridge U.) ; Garrido, Lluis (U. Barcelona (main)) ; Gascon, David (U. Barcelona (main)) ; Gaspar, Clara (CERN) ; Gazzoni, Giulio (Clermont-Ferrand U.) ; Gerick, David (Heidelberg U.) ; Gersabeck, Evelina (Manchester U.) ; Gersabeck, Marco (Manchester U.) ; Gershon, Timothy (Warwick U.) ; Gerstel, Dawid (Marseille, CPPM) ; Ghez, Philippe (Annecy, LAPP) ; Gibson, Valerie (Cambridge U.) ; Gioventù, Alessandra (U. Santiago de Compostela (main)) ; Girard, Olivier Göran (Ecole Polytechnique, Lausanne) ; Gironella Gironell, Pere (U. Barcelona (main)) ; Giubega, Lavinia-Helena (Bucharest, IFIN-HH) ; Gizdov, Konstantin (Edinburgh U.) ; Gligorov, Vladimir (Paris U., VI-VII) ; Golubkov, Dmitry (Moscow, ITEP) ; Golutvin, Andrey (Imperial Coll., London ; Natl. U. Sci. Tech., Moscow) ; Gomes, Alvaro (Rio de Janeiro, CBPF ; UFTM, Uberaba) ; Gorelov, Igor Vladimirovich (SINP, Moscow) ; Gotti, Claudio (INFN, Milan Bicocca ; Milan Bicocca U.) ; 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) ; Greim, Roman (NIKHEF, Amsterdam) ; Griffith, Peter (INFN, Cagliari) ; Grillo, Lucia (Manchester U.) ; Gruber, Lukas (CERN) ; Gruberg Cazon, Barak Raimond (Oxford U.) ; Gu, Chenxi (Tsinghua U., Beijing, CHEP) ; Guo, Xin (South China Normal U.) ; Gushchin, Evgeny (Moscow, INR) ; Guth, Andreas (Aachen, Tech. Hochsch.) ; Guz, Yury (Serpukhov, IHEP ; CERN) ; Gys, Thierry (CERN) ; Göbel, Carla (Rio de Janeiro, Pont. U. Catol.) ; Hadavizadeh, Thomas (Oxford U.) ; Hadjivasiliou, Christos (Clermont-Ferrand U.) ; Haefeli, Guido (Ecole Polytechnique, Lausanne) ; Haen, Christophe (CERN) ; Haines, Susan (Cambridge 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)) ; Heister, Arno (Tech. U., Dortmund (main)) ; Hennessy, Karol (Liverpool U.) ; Henry, Louis (Valencia U., IFIC) ; van Herwijnen, Eric (CERN) ; Heuel, Johannes (Aachen, Tech. Hochsch.) ; Heß, Miriam (Rostock U.) ; Hicheur, Adlène (Constantine U.) ; Hidalgo Charman, Raoul (Manchester U.) ; Hill, Donal (Oxford U.) ; Hilton, Martha (Manchester U.) ; Hopchev, Plamen Hristov (Ecole Polytechnique, Lausanne) ; Hu, Jiangqiao (Heidelberg U.) ; Hu, Wenhua (CCNU, Wuhan, Inst. Part. Phys.) ; Huang, Wenqian (Beijing, GUCAS) ; Huard, Zachary (Cincinnati U.) ; Hulsbergen, Wouter (NIKHEF, Amsterdam) ; Humair, Thibaud (Imperial Coll., London) ; 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) ; Ilten, Philip (Birmingham U.) ; Inglessi, Alexander (St. Petersburg, INP) ; Inyakin, Alexander (Serpukhov, IHEP) ; Ivshin, Kuzma (St. Petersburg, INP) ; Jacobsson, Richard (CERN) ; Jakobsen, Sune (CERN) ; Jalocha, Pawel (Oxford U.) ; Jans, Eddy (NIKHEF, Amsterdam) ; Jashal, Brij Kishor (Valencia U., IFIC) ; Jawahery, Abolhassan (Maryland U., College Park) ; Jiang, Feng (Tsinghua U., Beijing, CHEP) ; John, Malcolm (Oxford U.) ; Johnson, Daniel (CERN) ; Jones, Christopher (Cambridge U.) ; Jost, Beat (CERN) ; Jurik, Nathan (Oxford U.) ; Kandybei, Sergii (Kharkov, KIPT) ; Karacson, Matthias (CERN) ; Kariuki, James Mwangi (Bristol U.) ; Karodia, Sarah (Glasgow U.) ; Kazeev, Nikita (Higher Sch. of Economics, Moscow) ; Kecke, Matthieu (Heidelberg U.) ; Keizer, Floris (Cambridge U.) ; Kelsey, Matthew (Syracuse U.) ; Kenzie, Matthew (Cambridge U.) ; Ketel, Tjeerd (Nikhef, Amsterdam ; Vrije U., Amsterdam) ; Khanji, Basem (CERN) ; Kharisova, Anastasiia (Tomsk Polytechnic U.) ; Khurewathanakul, Chitsanu (Ecole Polytechnique, Lausanne) ; Kim, Kyung Eun (Syracuse U.) ; Kirn, Thomas (Aachen, Tech. Hochsch.) ; Kirsebom, Veronica Soelund (Ecole Polytechnique, Lausanne) ; Klaver, Suzanne (Frascati) ; Klimaszewski, Konrad (NCBJ, Swierk) ; Koliiev, Serhii (Kiev, INR) ; Kolpin, Michael (Heidelberg U.) ; Kondybayeva, Almagul (Natl. U. Sci. Tech., Moscow) ; Konoplyannikov, Anatoly (Moscow, ITEP) ; Kopciewicz, Pawel (AGH-UST, Cracow) ; Kopecna, Renata (Heidelberg U.) ; Koppenburg, Patrick (NIKHEF, Amsterdam) ; Kostiuk, Igor (NIKHEF, Amsterdam ; Kiev, INR) ; Kot, Oleksander (Kiev, INR) ; Kotriakhova, Sofia (St. Petersburg, INP) ; Kozeiha, Mohamad (Clermont-Ferrand U.) ; Kravchuk, Leonid (Moscow, INR) ; 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 (Cracow, INP ; AGH-UST, Cracow) ; Kucharczyk, Marcin (Cracow, INP) ; Kudryavtsev, Vasily (Novosibirsk, IYF ; Novosibirsk State U.) ; Kuindersma, Hilbrand Steffen (NIKHEF, Amsterdam) ; Kunde, Gerd Joachim (Los Alamos) ; Kuonen, Axel Kevin (Ecole Polytechnique, Lausanne) ; Kvaratskheliya, Tengiz (Moscow, ITEP) ; Lacarrere, Daniel (CERN) ; Lafferty, George (Manchester U.) ; Lai, Adriano (INFN, Cagliari) ; Lancierini, Davide (Zurich U.) ; Lane, John Jake (Manchester U.) ; Lanfranchi, Gaia (Frascati) ; Langenbruch, Christoph (Aachen, Tech. Hochsch.) ; Latham, Thomas (Warwick U.) ; Lazzari, Federico (INFN, Pisa ; U. Siena (main)) ; Lazzeroni, Cristina (Birmingham U.) ; Le Gac, Renaud (Marseille, CPPM) ; Leflat, Alexander (SINP, Moscow) ; Lefèvre, Regis (Clermont-Ferrand U.) ; Lemaitre, Florian (CERN) ; Leroy, Olivier (Marseille, CPPM) ; Lesiak, Tadeusz (Cracow, INP) ; Leverington, Blake (Heidelberg U.) ; Li, Hengne (South China Normal U.) ; Li, Pei-Rong (Beijing, GUCAS) ; Li, Xuan (Los Alamos) ; Li, Yiming (Beijing, Inst. High Energy Phys.) ; Li, Zhuoming (Syracuse U.) ; Liang, Xixin (Syracuse U.) ; Likhomanenko, Tatiana (Kurchatov Inst., Moscow) ; Lindner, Rolf (CERN) ; Ling, Pan (South China Normal U.) ; Lionetto, Federica (Zurich U.) ; Lisovskyi, Vitalii (Orsay, LAL) ; Liu, Guoming (South China Normal U.) ; Liu, Xuesong (Tsinghua U., Beijing, CHEP) ; Loh, David (Warwick U.) ; 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.) ; Lucchesi, Donatella (INFN, Padua ; U. Padua (main)) ; Lucio Martinez, Miriam (NIKHEF, Amsterdam) ; Luo, Yiheng (Tsinghua U., Beijing, CHEP) ; Lupato, Anna (INFN, Padua) ; Luppi, Eleonora (INFN, Ferrara ; Ferrara U.) ; Lupton, Oliver (Warwick U.) ; Lusiani, Alberto (INFN, Pisa) ; Lyu, Xiao-Rui (Beijing, GUCAS) ; Ma, Rui (South China Normal U.) ; Machefert, Frederic (Orsay, LAL) ; Maciuc, Florin (Bucharest, IFIN-HH) ; Macko, Vladimir (Ecole Polytechnique, Lausanne) ; Mackowiak, Patrick (Tech. U., Dortmund (main)) ; Maddrell-Mander, Samuel (Bristol U.) ; Madhan Mohan, Lakshan Ram (Bristol U.) ; Maev, Oleg (St. Petersburg, INP ; CERN) ; Maevskiy, Artem (Higher Sch. of Economics, Moscow) ; Maguire, Kevin (Manchester U.) ; 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) ; 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) ; Marin Benito, Carla (Orsay, LAL) ; 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 (CERN ; INFN, Milan Bicocca) ; 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 (Zurich U.) ; Maurice, Emilie (Orsay, LAL ; Ecole Polytechnique) ; Maurin, Brice (Ecole Polytechnique, Lausanne) ; McCann, Michael (Imperial Coll., London ; CERN) ; Mcconnell, Lucas (University Coll., Dublin) ; 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) ; Merk, Marcel (NIKHEF, Amsterdam) ; Merli, Andrea (INFN, Milan ; U. Milan (main)) ; Michielin, Emanuele (INFN, Padua) ; Milanes, Diego Alejandro (Colombia, U. Natl.) ; Millard, Edward James (Warwick U.) ; Minard, Marie-Noelle (Annecy, LAPP) ; Mineev, Oleg (Moscow, ITEP) ; Minzoni, Luca (INFN, Ferrara ; Ferrara U.) ; Mitchell, Sara Elizabeth (Edinburgh U.) ; Mitreska, Biljana (Manchester U.) ; Mitzel, Dominik Stefan (Heidelberg U.) ; Mogini, Andrea (Paris U., VI-VII) ; 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 (Marseille, CPPM) ; 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 (NIKHEF, Amsterdam) ; Murphy, Colm Harold (Oxford U.) ; Murray, Donal (Manchester U.) ; Mödden, Antje (Tech. U., Dortmund (main)) ; Müller, Dominik (CERN) ; Müller, Janine (Tech. U., Dortmund (main)) ; Müller, Katharina (Zurich U.) ; Müller, Vanessa (Tech. U., Dortmund (main)) ; Naik, Paras (Bristol U.) ; Nakada, Tatsuya (Ecole Polytechnique, Lausanne) ; Nandakumar, Raja (Rutherford) ; Nandi, Anita (Oxford U.) ; Nanut, Tara (Ecole Polytechnique, Lausanne) ; Nasteva, Irina (Rio de Janeiro Federal U.) ; Needham, Matthew (Edinburgh U.) ; Neri, Nicola (INFN, Milan ; U. Milan (main)) ; Neubert, Sebastian (Heidelberg U.) ; Neufeld, Niko (CERN) ; Newcombe, Ryan (Imperial Coll., London) ; Nguyen, Thi Dung (Ecole Polytechnique, Lausanne) ; Nguyen-Mau, Chung (Ecole Polytechnique, Lausanne ; Hanoi U. of Sci.) ; Niel, Elisabeth Maria (Orsay, LAL) ; Nieswand, Simon (Aachen, Tech. Hochsch.) ; Nikitin, Nikolay (SINP, Moscow) ; Nolte, Niklas Stefan (CERN) ; O'Hanlon, Daniel Patrick (INFN, Bologna) ; Oblakowska-Mucha, Agnieszka (AGH-UST, Cracow) ; Obraztsov, Vladimir (Serpukhov, IHEP) ; Ogilvy, Stephen (Glasgow U.) ; Oldeman, Rudolf (INFN, Cagliari ; Cagliari U.) ; Onderwater, Gerco (U. Groningen, VSI) ; Osborn, Joseph Daniel (U. Michigan, Ann Arbor) ; 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) ; Pais, Preema Rennee (Ecole Polytechnique, Lausanne) ; Pajero, Tommaso (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Palano, Antimo (INFN, Bari) ; Palutan, Matteo (Frascati) ; Panshin, Gennady (Tomsk Polytechnic U.) ; Papanestis, Antonios (Rutherford) ; Pappagallo, Marco (Edinburgh U.) ; Pappalardo, Luciano (INFN, Ferrara ; Ferrara U.) ; Parker, William (Maryland U., College Park) ; Parkes, Christopher (Manchester U. ; CERN) ; Passaleva, Giovanni (INFN, Florence ; CERN) ; Pastore, Alessandra (INFN, Bari) ; Patel, Mitesh (Imperial Coll., London) ; Patrignani, Claudia (INFN, Bologna ; Bologna U.) ; Pearce, Alex (CERN) ; Pellegrino, Antonio (NIKHEF, Amsterdam) ; Penso, Gianni (INFN, Rome) ; Pepe Altarelli, Monica (CERN) ; Perazzini, Stefano (INFN, Bologna) ; Pereima, Dmitrii (Moscow, ITEP) ; Perret, Pascal (Clermont-Ferrand U.) ; Pescatore, Luca (Ecole Polytechnique, Lausanne) ; Petridis, Konstantinos (Bristol U.) ; Petrolini, Alessandro (INFN, Genoa ; Genoa U.) ; Petrov, Aleksandr (Kurchatov Inst., Moscow) ; Petrucci, Stefano (Edinburgh U.) ; Petruzzo, Marco (INFN, Milan ; U. Milan (main)) ; Pietrzyk, Boleslaw (Annecy, LAPP) ; Pietrzyk, Guillaume (Ecole Polytechnique, Lausanne) ; Pikies, Malgorzata (Cracow, INP) ; Pili, Martina (Oxford U.) ; Pinci, Davide (INFN, Rome) ; Pinzino, Jacopo (CERN) ; Pisani, Flavio (CERN) ; Piucci, Alessio (Heidelberg U.) ; 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 (Birmingham U.) ; Poslavskii, Stanislav (Serpukhov, IHEP) ; Prasanth, Kodassery (Cracow, INP) ; 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 (Clermont-Ferrand U.) ; Raab, Naomi Veronika (University Coll., Dublin) ; Rachwal, Bartlomiej (AGH-UST, Cracow) ; Rademacker, Jonas (Bristol U.) ; Rama, Matteo (INFN, Pisa) ; Ramos Pernas, Miguel (U. Santiago de Compostela (main)) ; 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) ; Ravonel Salzgeber, Melody (CERN) ; Reboud, Meril (Annecy, LAPP) ; Redi, Federico (Ecole Polytechnique, Lausanne) ; Reichert, Stefanie (Tech. U., Dortmund (main)) ; dos Reis, Alberto (Rio de Janeiro, CBPF) ; Reiss, Florian (Paris U., VI-VII) ; Remon Alepuz, Clara (Valencia U., IFIC) ; Ren, Zan (Tsinghua U., Beijing, CHEP) ; Renaudin, Victor (Oxford U.) ; Ricciardi, Stefania (Rutherford) ; Richards, Sophie (Bristol U.) ; Rinnert, Kurt (Liverpool U.) ; Robbe, Patrick (Orsay, LAL) ; Robert, Arnaud (Paris U., VI-VII) ; Rodrigues, Ana Barbara (Ecole Polytechnique, Lausanne) ; Rodrigues, Eduardo (Cincinnati U.) ; Rodriguez Lopez, Jairo Alexis (Colombia, U. Natl.) ; Roehrken, Markus (CERN) ; Roiser, Stefan (CERN) ; Rollings, Alexandra Paige (Oxford U.) ; Romanovskiy, Vladimir (Serpukhov, IHEP) ; 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) ; Ryzka, Jakub (AGH-UST, Cracow) ; Saborido Silva, Juan Jose (U. Santiago de Compostela (main)) ; Sagidova, Naylya (St. Petersburg, INP) ; Saitta, Biagio (INFN, Cagliari ; Cagliari U.) ; Sanchez Gras, Cristina (NIKHEF, Amsterdam) ; Sanchez Mayordomo, Carlos (Valencia U., IFIC) ; Sanmartin Sedes, Brais (U. Santiago de Compostela (main)) ; Santacesaria, Roberta (INFN, Rome) ; Santamarina Rios, Cibran (U. Santiago de Compostela (main)) ; Santimaria, Marco (Frascati ; CERN) ; Santovetti, Emanuele (INFN, Rome2 ; Rome U., Tor Vergata) ; Sarpis, Gediminas (Manchester U.) ; Sarti, Alessio (Frascati ; U. Rome La Sapienza (main)) ; Satriano, Celestina (INFN, Rome ; Basilicata U., Potenza) ; Satta, Alessia (INFN, Rome2) ; Saur, Miroslav (Beijing, GUCAS) ; Savrina, Darya (Moscow, ITEP ; SINP, Moscow) ; 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) ; Schreiner, HF (Cincinnati U.) ; Schubiger, Maxime (NIKHEF, Amsterdam) ; Schulte, Sebastian (Ecole Polytechnique, Lausanne) ; Schune, Marie Helene (Orsay, LAL) ; Schwemmer, Rainer (CERN) ; Sciascia, Barbara (Frascati) ; Sciubba, Adalberto (INFN, Rome ; U. Rome La Sapienza (main)) ; Semennikov, Alexander (Moscow, ITEP) ; 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) ; Shapkin, Mikhail (Serpukhov, IHEP) ; Shears, Tara (Liverpool U.) ; Shekhtman, Lev (Novosibirsk, IYF ; Novosibirsk State U.) ; Shevchenko, Vladimir (Kurchatov Inst., Moscow ; Natl. U. Sci. Tech., Moscow) ; Shmanin, Evgenii (Natl. U. Sci. Tech., Moscow) ; Shupperd, Joseph David (Syracuse U.) ; Siddi, Benedetto Gianluca (INFN, Ferrara) ; Silva Coutinho, Rafael (Zurich U.) ; Silva de Oliveira, Luiz Gustavo (Rio de Janeiro Federal U.) ; Simi, Gabriele (INFN, Padua ; U. Padua (main)) ; Simone, Saverio (INFN, Bari ; Bari U.) ; Skiba, Igor (INFN, Ferrara) ; Skidmore, Nicola (Heidelberg U.) ; Skwarnicki, Tomasz (Syracuse U.) ; Slater, Mark (Birmingham U.) ; Smeaton, John Gordon (Cambridge U.) ; Smith, Eluned (Aachen, Tech. Hochsch.) ; Smith, Iwan Thomas (Edinburgh U.) ; Smith, Mark (Imperial Coll., London) ; Soares, Marcelo (INFN, Bologna) ; Soares Lavra, Lais (Rio de Janeiro, CBPF) ; Sokoloff, Michael (Cincinnati U.) ; Soler, Paul (Glasgow 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) ; Stefkova, Slavomira (Imperial Coll., London) ; Steinkamp, Olaf (Zurich U.) ; Stemmle, Simon (Heidelberg U.) ; Stenyakin, Oleg (Serpukhov, IHEP) ; Stepanova, Margarita (St. Petersburg, INP) ; Stevens, Holger (Tech. U., Dortmund (main)) ; Stocchi, Achille (Orsay, LAL) ; Stone, Sheldon (Syracuse U.) ; Stracka, Simone (INFN, Pisa) ; Stramaglia, Maria Elena (Ecole Polytechnique, Lausanne) ; Straticiuc, Mihai (Bucharest, IFIN-HH) ; Straumann, Ulrich (Zurich U.) ; Strokov, Sergey (Tomsk Polytechnic U.) ; Sun, Jiayin (Tsinghua U., Beijing, CHEP) ; Sun, Liang (Wuhan U.) ; Sun, Yipeng (Maryland U., College Park) ; Swientek, Krzysztof (AGH-UST, Cracow) ; Szabelski, Adam (NCBJ, Swierk) ; Szumlak, Tomasz (AGH-UST, Cracow) ; Szymanski, Maciej Pawel (Beijing, GUCAS) ; T'Jampens, Stephane (Annecy, LAPP) ; Taneja, Shantam (Manchester U.) ; Tang, Zhipeng (Tsinghua U., Beijing, CHEP) ; Tekampe, Tobias (Tech. U., Dortmund (main)) ; Tellarini, Giulia (INFN, Ferrara) ; Teubert, Frederic (CERN) ; Thomas, Eric (CERN) ; Thomson, Kayleigh Anne (Liverpool U.) ; van Tilburg, Jeroen (NIKHEF, Amsterdam) ; Tilley, Matthew James (Imperial Coll., London) ; Tisserand, Vincent (Clermont-Ferrand U.) ; Tobin, Mark (Beijing, Inst. High Energy Phys.) ; Tolk, Siim (CERN) ; Tomassetti, Luca (INFN, Ferrara ; Ferrara U.) ; Tonelli, Diego (INFN, Pisa) ; Tou, Da Yu (Paris U., VI-VII) ; Tournefier, Edwige (Annecy, LAPP) ; Traill, Murdo (Glasgow U.) ; Tran, Minh Tâm (Ecole Polytechnique, Lausanne) ; Trisovic, Ana (Cambridge U.) ; Tsaregorodtsev, Andrei (Marseille, CPPM) ; Tuci, Giulia (INFN, Pisa ; CERN ; U. Pisa (main)) ; Tully, Alison (Cambridge U.) ; Tuning, Niels (NIKHEF, Amsterdam) ; Ukleja, Artur (NCBJ, Swierk) ; Usachov, Andrii (Orsay, LAL) ; 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) ; Valat, Sebastien (CERN) ; Valenti, Giovanni (INFN, Bologna) ; Van Hecke, Hubert (Los Alamos) ; Van Hulse, Charlotte Barbara (University Coll., Dublin) ; Vazquez Gomez, Ricardo (CERN) ; Vazquez Regueiro, Pablo (U. Santiago de Compostela (main)) ; Vecchi, Stefania (INFN, Ferrara) ; van Veghel, Maarten (NIKHEF, Amsterdam) ; Velthuis, Jaap (Bristol U.) ; Veltri, Michele (INFN, Florence ; U. Urbino (main)) ; Venkateswaran, Aravindhan (Syracuse U.) ; Vernet, Maxime (Clermont-Ferrand U.) ; Veronesi, Michele (NIKHEF, Amsterdam) ; Vesterinen, Mika (Warwick U.) ; Viana Barbosa, Joao Vitor (CERN) ; Vieira, Daniel (Beijing, GUCAS) ; Vieites Diaz, Maria (Ecole Polytechnique, Lausanne) ; Viemann, Harald (Rostock U.) ; Vilasis-Cardona, Xavier (U. Barcelona (main) ; Ramon Llull U., Barcelona) ; Vitkovskiy, Arseniy (NIKHEF, Amsterdam) ; Volkov, Vladimir (SINP, Moscow) ; Vollhardt, Achim (Zurich U.) ; Vom Bruch, Dorothea (Paris U., VI-VII) ; Voneki, Balazs (CERN) ; Vorobyev, Alexey (St. Petersburg, INP) ; Vorobyev, Vitaly (Novosibirsk, IYF ; Novosibirsk State U.) ; Voropaev, Nikolai (St. Petersburg, INP) ; de Vries, Jacco (NIKHEF, Amsterdam) ; Vázquez Sierra, Carlos (NIKHEF, Amsterdam) ; Waldi, Roland (Rostock U.) ; Walsh, John (INFN, Pisa) ; Wang, Jianchun (Beijing, Inst. High Energy Phys.) ; Wang, Jianqiao (Tsinghua U., Beijing, CHEP) ; Wang, Mengzhen (Tsinghua U., Beijing, CHEP) ; Wang, Yilong (CCNU, Wuhan, Inst. Part. Phys.) ; Wang, Zhenzi (Zurich U.) ; Ward, David (Cambridge U.) ; Wark, Heather Mckenzie (Liverpool U.) ; Watson, Nigel (Birmingham U.) ; Websdale, David (Imperial Coll., London) ; Weiden, Andreas (Zurich U.) ; Weisser, Constantin (MIT) ; Westhenry, Benedict Donald C (Bristol U.) ; White, Dylan James (Manchester U.) ; Whitehead, Mark (Aachen, Tech. Hochsch.) ; Wilkinson, Guy (Oxford U.) ; Wilkinson, Michael (Syracuse U.) ; Williams, Ifan (Cambridge U.) ; Williams, Mark Richard James (Manchester U.) ; Williams, Mike (MIT) ; Williams, Timothy (Birmingham U.) ; Wilson, Fergus (Rutherford) ; Winn, Michael Andreas (Orsay, LAL) ; Wislicki, Wojciech (NCBJ, Swierk) ; Witek, Mariusz (Cracow, INP) ; Wormser, Guy (Orsay, LAL) ; 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 (Tsinghua U., Beijing, CHEP) ; Xu, Li (Tsinghua U., Beijing, CHEP) ; Xu, Menglin (CCNU, Wuhan, Inst. Part. Phys.) ; Xu, Qingnian (Beijing, GUCAS) ; Xu, Zehua (Tsinghua U., Beijing, CHEP) ; Xu, Zhirui (Annecy, LAPP) ; 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 (CCNU, Wuhan, Inst. Part. Phys. ; Hunan U.) ; Yuan, Xuhao (Syracuse U.) ; Yushchenko, Oleg (Serpukhov, IHEP) ; Zarebski, Kristian Alexander (Birmingham U.) ; Zavertyaev, Mikhail (Heidelberg, Max Planck Inst. ; Lebedev Inst.) ; Zeng, Ming (Tsinghua U., Beijing, CHEP) ; Zhang, Dongliang (CCNU, Wuhan, Inst. Part. Phys.) ; Zhang, Liming (Tsinghua U., Beijing, CHEP) ; Zhang, Shunan (Tsinghua U., Beijing, CHEP) ; Zhang, Wen Chao (Tsinghua U., Beijing, CHEP ; Xian, Shaanxi Norm. U.) ; 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.)

Publication 2019-12-12
Imprint 2019-09-03
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-2019-022.html
In: Phys. Rev. Lett. 123 (2019) 241802
DOI 10.1103/PhysRevLett.123.241802
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract A search for the lepton-flavour violating decays $B^+ \to K^+ {\mu}^{\pm} e^{\mp}$ is performed using a sample of proton-proton collision data, collected with the LHCb experiment at centre-of-mass energies of $7$ and $8 {\rm TeV}$ and corresponding to an integrated luminosity of 3$\rm fb^{-1}$. No significant signal is observed, and upper limits on the branching fractions are set as $\mathcal{B}(B^+ \to K^+ {\mu}^- e^+) < 7.0 (9.5) \times 10^{-9}$ and $\mathcal{B}(B^+ \to K^+ {\mu}^+ e^-) < 6.4 (8.8) \times 10^{-9}$ at 90 (95) % confidence level. The results improve the current best limits on these decays by more than one order of magnitude.
Copyright/License preprint: © 2019-2024 CERN (License: CC-BY-4.0)
publication: © 2019-2024 CERN (License: CC-BY-4.0)



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