CERN Accelerating science

Article
Report number arXiv:1305.1562 ; CERN-PH-EP-2013-080 ; CERN-PH-EP-2013-080
Title Mid-rapidity anti-baryon to baryon ratios in pp collisions at $\sqrt{s}$ = 0.9, 2.76 and 7 TeV measured by ALICE
Author(s)

Abbas, E. (Cairo, Acad. Sci. Res. Tech.) ; Abelev, B. (LLNL, Livermore) ; Adam, J. (Prague, Tech. U.) ; Adamova, D. (Rez, Nucl. Phys. Inst.) ; Adare, A.M. (Yale U.) ; Aggarwal, M.M. (Panjab U.) ; Aglieri Rinella, G. (CERN) ; Agnello, M. (INFN, Turin) ; Agocs, A.G. (Hungarian Acad. Sci., Budapest) ; Agostinelli, A. (INFN, Bologna) ; Ahammed, Z. (Calcutta, VECC) ; Ahmad, N. (Aligarh Muslim U.) ; Masoodi, A.Ahmad (Aligarh Muslim U.) ; Ahmed, I. (COMSATS, Islamabad) ; Ahn, S.A. (KISTI, Daejeon) ; Ahn, S.U. (KISTI, Daejeon) ; Aimo, I. (INFN, Turin) ; Ajaz, M. (COMSATS, Islamabad) ; Akindinov, A. (Moscow, ITEP) ; Aleksandrov, D. (Kurchatov Inst., Moscow) ; Alessandro, B. (INFN, Turin) ; Alici, A. (INFN, Bologna) ; Alkin, A. (BITP, Kiev) ; Almaraz Avina, E. (UNAM, Mexico) ; Alme, J. (Bergen U.) ; Alt, T. (Frankfurt U.) ; Altini, V. (INFN, Bari) ; Altinpinar, S. (Bergen U.) ; Altsybeev, I. (St. Petersburg State U.) ; Andrei, C. (Bucharest, IFIN-HH) ; Andronic, A. (Darmstadt, GSI) ; Anguelov, V. (Heidelberg U.) ; Anielski, J. (Munster U.) ; Anson, C. (Ohio State U.) ; Anticic, T. (Boskovic Inst., Zagreb) ; Antinori, F. (INFN, Padua) ; Antonioli, P. (INFN, Bologna) ; Aphecetche, L. (SUBATECH, Nantes) ; Appelshauser, H. (Frankfurt U.) ; Arbor, N. (LPSC, Grenoble) ; Arcelli, S. (INFN, Bologna) ; Arend, A. (Frankfurt U.) ; Armesto, N. (Santiago de Compostela U.) ; Arnaldi, R. (INFN, Turin) ; Aronsson, T. (Yale U.) ; Arsene, I.C. (Darmstadt, GSI) ; Arslandok, M. (Frankfurt U.) ; Asryan, A. (St. Petersburg State U.) ; Augustinus, A. (CERN) ; Averbeck, R. (Darmstadt, GSI) ; Awes, T.C. (Oak Ridge) ; Aysto, J. (Helsinki Inst. of Phys.) ; Azmi, M.D. (Aligarh Muslim U.) ; Bach, M. (Frankfurt U.) ; Badala, A. (INFN, Catania) ; Baek, Y.W. (Clermont-Ferrand U.) ; Bailhache, R. (Frankfurt U.) ; Bala, R. (Jammu U.) ; Baldisseri, A. (DAPNIA, Saclay) ; Baltasar Dos Santos Pedrosa, F. (CERN) ; Ban, J. (Kosice, IEF) ; Baral, R.C. (Bhubaneswar, Inst. Phys.) ; Barbera, R. (INFN, Catania) ; Barile, F. (INFN, Bari) ; Barnafoldi, G.G. (Hungarian Acad. Sci., Budapest) ; Barnby, L.S. (Birmingham U.) ; Barret, V. (Clermont-Ferrand U.) ; Bartke, J. (Cracow, INP) ; Basile, M. (INFN, Bologna) ; Bastid, N. (Clermont-Ferrand U.) ; Basu, S. (Calcutta, VECC) ; Bathen, B. (Munster U.) ; Batigne, G. (SUBATECH, Nantes) ; Batyunya, B. (Dubna, JINR) ; Batzing, P.C. (Oslo U.) ; Baumann, C. (Frankfurt U.) ; Bearden, I.G. (Bohr Inst.) ; Beck, H. (Frankfurt U.) ; Behera, N.K. (Indian Inst. Tech., Mumbai) ; Belikov, I. (Louis Pasteur U., Strasbourg I) ; Bellini, F. (INFN, Bologna) ; Bellwied, R. (Houston U.) ; Belmont-Moreno, E. (UNAM, Mexico) ; Bencedi, G. (Hungarian Acad. Sci., Budapest) ; Beole, S. (INFN, Turin) ; Berceanu, I. (Bucharest, IFIN-HH) ; Bercuci, A. (Bucharest, IFIN-HH) ; Berdnikov, Y. (St. Petersburg, INP) ; Berenyi, D. (Hungarian Acad. Sci., Budapest) ; Bergognon, A.A.E. (SUBATECH, Nantes) ; Bertens, R.A. (NIKHEF, Amsterdam) ; Berzano, D. (INFN, Turin) ; Betev, L. (CERN) ; Bhasin, A. (Jammu U.) ; Bhati, A.K. (Panjab U.) ; Bhom, J. (Tsukuba U.) ; Bianchi, N. (Frascati) ; Bianchi, L. (INFN, Turin) ; Bianchin, C. (NIKHEF, Amsterdam) ; Bielcik, J. (Prague, Tech. U.) ; Bielcikova, J. (Rez, Nucl. Phys. Inst.) ; Bilandzic, A. (Bohr Inst.) ; Bjelogrlic, S. (NIKHEF, Amsterdam) ; Blanco, F. (Madrid, CIEMAT) ; Blanco, F. (Houston U.) ; Blau, D. (Kurchatov Inst., Moscow) ; Blume, C. (Frankfurt U.) ; Boccioli, M. (CERN) ; Bottger, S. (Frankfurt U.) ; Bogdanov, A. (Moscow Phys. Eng. Inst.) ; Boggild, H. (Bohr Inst.) ; Bogolyubsky, M. (Serpukhov, IHEP) ; Boldizsar, L. (Hungarian Acad. Sci., Budapest) ; Bombara, M. (Kosice U.) ; Book, J. (Frankfurt U.) ; Borel, H. (DAPNIA, Saclay) ; Borissov, A. (Wayne State U.) ; Bossu, F. (iThemba LABS) ; Botje, M. (NIKHEF, Amsterdam) ; Botta, E. (INFN, Turin) ; Braidot, E. (LBL, Berkeley) ; Braun-Munzinger, P. (Darmstadt, GSI) ; Bregant, M. (SUBATECH, Nantes) ; Breitner, T. (Frankfurt U.) ; Broker, T.A. (Frankfurt U.) ; Browning, T.A. (Purdue U.) ; Broz, M. (Comenius U.) ; Brun, R. (CERN) ; Bruna, E. (INFN, Turin) ; Bruno, G.E. (INFN, Bari) ; Budnikov, D. (RFNC-VNIIEF, Sarov) ; Buesching, H. (Frankfurt U.) ; Bufalino, S. (INFN, Turin) ; Buncic, P. (CERN) ; Busch, O. (Heidelberg U.) ; Buthelezi, Z. (iThemba LABS) ; Caffarri, D. (INFN, Padua) ; Cai, X. (Hua-Zhong Normal U.) ; Caines, H. (Yale U.) ; Calvo Villar, E. (Lima, Pont. U. Catolica) ; Camerini, P. (INFN, Trieste) ; Canoa Roman, V. (Caracas, IIEA) ; Cara Romeo, G. (INFN, Bologna) ; Carena, F. (CERN) ; Carena, W. (CERN) ; Carlin Filho, N. (Sao Paulo U., Sao Carlos) ; Carminati, F. (CERN) ; Casanova Diaz, A. (Frascati) ; Castillo Castellanos, J. (DAPNIA, Saclay) ; Castillo Hernandez, J.F. (Darmstadt, GSI) ; Casula, E.A.R. (INFN, Cagliari) ; Catanescu, V. (Bucharest, IFIN-HH) ; Cavicchioli, C. (CERN) ; Ceballos Sanchez, C. (Havana, CEADEN) ; Cepila, J. (Prague, Tech. U.) ; Cerello, P. (INFN, Turin) ; Chang, B. (Helsinki Inst. of Phys.) ; Chapeland, S. (CERN) ; Charvet, J.L. (DAPNIA, Saclay) ; Chattopadhyay, S. (Calcutta, VECC) ; Chattopadhyay, S. (Saha Inst.) ; Cherney, M. (Creighton U.) ; Cheshkov, C. (CERN) ; Cheynis, B. (Lyon, IPN) ; Chibante Barroso, V. (CERN) ; Chinellato, D.D. (Houston U.) ; Chochula, P. (CERN) ; Chojnacki, M. (Bohr Inst.) ; Choudhury, S. (Calcutta, VECC) ; Christakoglou, P. (NIKHEF, Amsterdam) ; Christensen, C.H. (Bohr Inst.) ; Christiansen, P. (Lund U.) ; Chujo, T. (Tsukuba U.) ; Chung, S.U. (Pusan Natl. U.) ; Cicalo, C. (INFN, Cagliari) ; Cifarelli, L. (INFN, Bologna) ; Cindolo, F. (INFN, Bologna) ; Cleymans, J. (iThemba LABS) ; Colamaria, F. (INFN, Bari) ; Colella, D. (INFN, Bari) ; Collu, A. (INFN, Cagliari) ; Conesa Balbastre, G. (LPSC, Grenoble) ; Conesa del Valle, Z. (CERN) ; Connors, M.E. (Yale U.) ; Contin, G. (INFN, Trieste) ; Contreras, J.G. (Caracas, IIEA) ; Cormier, T.M. (Wayne State U.) ; Corrales Morales, Y. (INFN, Turin) ; Cortese, P. (Piemonte Orientale U., Alessandria) ; Cortes Maldonado, I. (Puebla U., Inst. Fis.) ; Cosentino, M.R. (LBL, Berkeley) ; Costa, F. (CERN) ; Cotallo, M.E. (Madrid, CIEMAT) ; Crescio, E. (Caracas, IIEA) ; Crochet, P. (Clermont-Ferrand U.) ; Alaniz, E.Cruz (UNAM, Mexico) ; Albino, R.Cruz (Caracas, IIEA) ; Cuautle, E. (Mexico U., CEN) ; Cunqueiro, L. (Frascati) ; Dainese, A. (INFN, Padua) ; Dang, R. (Hua-Zhong Normal U.) ; Danu, A. (Bucharest, Inst. Space Science) ; Das, K. (Saha Inst.) ; Das, S. (Bose Natl. Ctr., Kolkata) ; Das, D. (Saha Inst.) ; Das, I. (Orsay, IPN) ; Dash, S. (Indian Inst. Tech., Mumbai) ; Dash, A. (Campinas State U.) ; De, S. (Calcutta, VECC) ; de Barros, G.O.V. (Sao Paulo U., Sao Carlos) ; De Caro, A. (INFN, Salerno) ; De Cataldo, G. (INFN, Bari) ; de Cuveland, J. (Frankfurt U.) ; De Falco, A. (INFN, Cagliari) ; De Gruttola, D. (INFN, Salerno) ; Delagrange, H. (SUBATECH, Nantes) ; Deloff, A. (Warsaw, Inst. Nucl. Studies) ; De Marco, N. (INFN, Turin) ; Denes, E. (Hungarian Acad. Sci., Budapest) ; De Pasquale, S. (INFN, Salerno) ; Deppman, A. (Sao Paulo U., Sao Carlos) ; Erasmo, G.D. (INFN, Bari) ; de Rooij, R. (NIKHEF, Amsterdam) ; Diaz Corchero, M.A. (Madrid, CIEMAT) ; Di Bari, D. (INFN, Bari) ; Dietel, T. (Munster U.) ; Di Giglio, C. (INFN, Bari) ; Di Liberto, S. (INFN, Rome) ; Di Mauro, A. (CERN) ; Di Nezza, P. (Frascati) ; Divia, R. (CERN) ; Djuvsland, O. (Bergen U.) ; Dobrin, A. (Wayne State U.) ; Dobrowolski, T. (Warsaw, Inst. Nucl. Studies) ; Donigus, B. (Darmstadt, GSI) ; Dordic, O. (Oslo U.) ; Driga, O. (SUBATECH, Nantes) ; Dubey, A.K. (Calcutta, VECC) ; Dubla, A. (NIKHEF, Amsterdam) ; Ducroux, L. (Lyon, IPN) ; Dupieux, P. (Clermont-Ferrand U.) ; Dutta Majumdar, A.K. (Saha Inst.) ; Elia, D. (INFN, Bari) ; Emschermann, D. (Munster U.) ; Engel, H. (Frankfurt U.) ; Erazmus, B. (CERN) ; Erdal, H.A. (Bergen U.) ; Eschweiler, D. (Frankfurt U.) ; Espagnon, B. (Orsay, IPN) ; Estienne, M. (SUBATECH, Nantes) ; Esumi, S. (Tsukuba U.) ; Evans, D. (Birmingham U.) ; Evdokimov, S. (Serpukhov, IHEP) ; Eyyubova, G. (Oslo U.) ; Fabris, D. (INFN, Padua) ; Faivre, J. (LPSC, Grenoble) ; Falchieri, D. (INFN, Bologna) ; Fantoni, A. (Frascati) ; Fasel, M. (Heidelberg U.) ; Fehlker, D. (Bergen U.) ; Feldkamp, L. (Munster U.) ; Felea, D. (Bucharest, Inst. Space Science) ; Feliciello, A. (INFN, Turin) ; Fenton-Olsen, B. (LBL, Berkeley) ; Feofilov, G. (St. Petersburg State U.) ; Fernandez Tellez, A. (Puebla U., Inst. Fis.) ; Ferretti, A. (INFN, Turin) ; Festanti, A. (INFN, Padua) ; Figiel, J. (Cracow, INP) ; Figueredo, M.A.S. (Sao Paulo U., Sao Carlos) ; Filchagin, S. (RFNC-VNIIEF, Sarov) ; Finogeev, D. (Moscow, INR) ; Fionda, F.M. (INFN, Bari) ; Fiore, E.M. (INFN, Bari) ; Floratos, E. (Athens U.) ; Floris, M. (CERN) ; Foertsch, S. (iThemba LABS) ; Foka, P. (Darmstadt, GSI) ; Fokin, S. (Kurchatov Inst., Moscow) ; Fragiacomo, E. (INFN, Trieste) ; Francescon, A. (CERN) ; Frankenfeld, U. (Darmstadt, GSI) ; Fuchs, U. (CERN) ; Furget, C. (LPSC, Grenoble) ; Fusco Girard, M. (INFN, Salerno) ; Gaardhoje, J.J. (Bohr Inst.) ; Gagliardi, M. (INFN, Turin) ; Gago, A. (Lima, Pont. U. Catolica) ; Gallio, M. (INFN, Turin) ; Gangadharan, D.R. (Ohio State U.) ; Ganoti, P. (Oak Ridge) ; Garabatos, C. (Darmstadt, GSI) ; Garcia-Solis, E. (Chicago State U.) ; Gargiulo, C. (CERN) ; Garishvili, I. (LLNL, Livermore) ; Gerhard, J. (Frankfurt U.) ; Germain, M. (SUBATECH, Nantes) ; Geuna, C. (DAPNIA, Saclay) ; Gheata, A. (CERN) ; Gheata, M. (Bucharest, Inst. Space Science) ; Ghidini, B. (INFN, Bari) ; Ghosh, P. (Calcutta, VECC) ; Gianotti, P. (Frascati) ; Girard, M.R. (Warsaw U. of Tech.) ; Giubellino, P. (CERN) ; Gladysz-Dziadus, E. (Cracow, INP) ; Glassel, P. (Heidelberg U.) ; Gomez, R. (Sinaloa U.) ; Ferreiro, E.G. (Santiago de Compostela U.) ; Gonzalez-Trueba, L.H. (UNAM, Mexico) ; Gonzalez-Zamora, P. (Madrid, CIEMAT) ; Gorbunov, S. (Frankfurt U.) ; Goswami, A. (Rajasthan U.) ; Gotovac, S. (Split Tech. U.) ; Graczykowski, L.K. (Warsaw U. of Tech.) ; Grajcarek, R. (Heidelberg U.) ; Grelli, A. (NIKHEF, Amsterdam) ; Grigoras, C. (CERN) ; Grigoras, A. (CERN) ; Grigoriev, V. (Moscow Phys. Eng. Inst.) ; Grigoryan, S. (Dubna, JINR) ; Grigoryan, A. (Yerevan Phys. Inst.) ; Grinyov, B. (BITP, Kiev) ; Grion, N. (INFN, Trieste) ; Gros, P. (Lund U.) ; Grosse-Oetringhaus, J.F. (CERN) ; Grossiord, J.Y. (Lyon, IPN) ; Grosso, R. (CERN) ; Guber, F. (Moscow, INR) ; Guernane, R. (LPSC, Grenoble) ; Guerzoni, B. (INFN, Bologna) ; Guilbaud, M. (Lyon, IPN) ; Gulbrandsen, K. (Bohr Inst.) ; Gulkanyan, H. (Yerevan Phys. Inst.) ; Gunji, T. (Tokyo U.) ; Gupta, A. (Jammu U.) ; Gupta, R. (Jammu U.) ; Haake, R. (Munster U.) ; Haaland, O. (Bergen U.) ; Hadjidakis, C. (Orsay, IPN) ; Haiduc, M. (Bucharest, Inst. Space Science) ; Hamagaki, H. (Tokyo U.) ; Hamar, G. (Hungarian Acad. Sci., Budapest) ; Han, B.H. (Sejong U.) ; Hanratty, L.D. (Birmingham U.) ; Hansen, A. (Bohr Inst.) ; Harmanova-Tothova, Z. (Kosice U.) ; Harris, J.W. (Yale U.) ; Hartig, M. (Frankfurt U.) ; Harton, A. (Chicago State U.) ; Hatzifotiadou, D. (INFN, Bologna) ; Hayashi, S. (Tokyo U.) ; Hayrapetyan, A. (CERN) ; Heckel, S.T. (Frankfurt U.) ; Heide, M. (Munster U.) ; Helstrup, H. (Bergen U.) ; Herghelegiu, A. (Bucharest, IFIN-HH) ; Herrera Corral, G. (Caracas, IIEA) ; Herrmann, N. (Heidelberg U.) ; Hess, B.A. (Tubingen U.) ; Hetland, K.F. (Bergen U.) ; Hicks, B. (Yale U.) ; Hippolyte, B. (Louis Pasteur U., Strasbourg I) ; Hori, Y. (Tokyo U.) ; Hristov, P. (CERN) ; Hrivnacova, I. (Orsay, IPN) ; Huang, M. (Bergen U.) ; Humanic, T.J. (Ohio State U.) ; Hwang, D.S. (Sejong U.) ; Ichou, R. (Clermont-Ferrand U.) ; Ilkaev, R. (RFNC-VNIIEF, Sarov) ; Ilkiv, I. (Warsaw, Inst. Nucl. Studies) ; Inaba, M. (Tsukuba U.) ; Incani, E. (INFN, Cagliari) ; Innocenti, P.G. (CERN) ; Innocenti, G.M. (INFN, Turin) ; Ippolitov, M. (Kurchatov Inst., Moscow) ; Irfan, M. (Aligarh Muslim U.) ; Ivan, C. (Darmstadt, GSI) ; Ivanov, M. (Darmstadt, GSI) ; Ivanov, A. (St. Petersburg State U.) ; Ivanov, V. (St. Petersburg, INP) ; Ivanytskyi, O. (BITP, Kiev) ; Jacholkowski, A. (INFN, Catania) ; Jacobs, P.M. (LBL, Berkeley) ; Jahnke, C. (Sao Paulo U., Sao Carlos) ; Jang, H.J. (KISTI, Daejeon) ; Janik, M.A. (Warsaw U. of Tech.) ; Jayarathna, P.H.S.Y. (Houston U.) ; Jena, S. (Indian Inst. Tech., Mumbai) ; Jha, D.M. (Wayne State U.) ; Jimenez Bustamante, R.T. (Mexico U., CEN) ; Jones, P.G. (Birmingham U.) ; Jung, H. (Gangneung-Wonju Natl. U.) ; Jusko, A. (Birmingham U.) ; Kaidalov, A.B. (Moscow, ITEP) ; Kalcher, S. (Frankfurt U.) ; Kalinak, P. (Kosice, IEF) ; Kalliokoski, T. (Helsinki Inst. of Phys.) ; Kalweit, A. (CERN) ; Kang, J.H. (Yonsei U.) ; Kaplin, V. (Moscow Phys. Eng. Inst.) ; Kar, S. (Calcutta, VECC) ; Karasu Uysal, A. (CERN) ; Karavichev, O. (Moscow, INR) ; Karavicheva, T. (Moscow, INR) ; Karpechev, E. (Moscow, INR) ; Kazantsev, A. (Kurchatov Inst., Moscow) ; Kebschull, U. (Frankfurt U.) ; Keidel, R. (Fachhochsch., Worms) ; Ketzer, B. (Frankfurt U.) ; Khan, P. (Saha Inst.) ; Khan, K.H. (COMSATS, Islamabad) ; Khan, S.A. (Calcutta, VECC) ; Khan, M.M. (Aligarh Muslim U.) ; Khanzadeev, A. (St. Petersburg, INP) ; Kharlov, Y. (Serpukhov, IHEP) ; Kileng, B. (Bergen U.) ; Kim, D.W. (Gangneung-Wonju Natl. U.) ; Kim, T. (Yonsei U.) ; Kim, M. (Gangneung-Wonju Natl. U.) ; Kim, M. (Yonsei U.) ; Kim, S. (Sejong U.) ; Kim, B. (Yonsei U.) ; Kim, J.S. (Gangneung-Wonju Natl. U.) ; Kim, J.H. (Sejong U.) ; Kim, D.J. (Helsinki Inst. of Phys.) ; Kirsch, S. (Frankfurt U.) ; Kisel, I. (Frankfurt U.) ; Kiselev, S. (Moscow, ITEP) ; Kisiel, A. (Warsaw U. of Tech.) ; Klay, J.L. (Cal. Poly.) ; Klein, J. (Heidelberg U.) ; Klein-Bosing, C. (Munster U.) ; Kliemant, M. (Frankfurt U.) ; Kluge, A. (CERN) ; Knichel, M.L. (Darmstadt, GSI) ; Knospe, A.G. (Texas U.) ; Kohler, M.K. (Darmstadt, GSI) ; Kollegger, T. (Frankfurt U.) ; Kolojvari, A. (St. Petersburg State U.) ; Kompaniets, M. (St. Petersburg State U.) ; Kondratiev, V. (St. Petersburg State U.) ; Kondratyeva, N. (Moscow Phys. Eng. Inst.) ; Konevskikh, A. (Moscow, INR) ; Kovalenko, V. (St. Petersburg State U.) ; Kowalski, M. (Cracow, INP) ; Kox, S. (LPSC, Grenoble) ; Koyithatta Meethaleveedu, G. (Indian Inst. Tech., Mumbai) ; Kral, J. (Helsinki Inst. of Phys.) ; Kralik, I. (Kosice, IEF) ; Kramer, F. (Frankfurt U.) ; Kravcakova, A. (Kosice U.) ; Krelina, M. (Prague, Tech. U.) ; Kretz, M. (Frankfurt U.) ; Krivda, M. (Birmingham U.) ; Krizek, F. (Helsinki Inst. of Phys.) ; Krus, M. (Prague, Tech. U.) ; Kryshen, E. (St. Petersburg, INP) ; Krzewicki, M. (Darmstadt, GSI) ; Kucera, V. (Rez, Nucl. Phys. Inst.) ; Kucheriaev, Y. (Kurchatov Inst., Moscow) ; Kugathasan, T. (CERN) ; Kuhn, C. (Louis Pasteur U., Strasbourg I) ; Kuijer, P.G. (NIKHEF, Amsterdam) ; Kulakov, I. (Frankfurt U.) ; Kumar, J. (Indian Inst. Tech., Mumbai) ; Kurashvili, P. (Warsaw, Inst. Nucl. Studies) ; Kurepin, A. (Moscow, INR) ; Kurepin, A.B. (Moscow, INR) ; Kuryakin, A. (RFNC-VNIIEF, Sarov) ; Kushpil, S. (Rez, Nucl. Phys. Inst.) ; Kushpil, V. (Rez, Nucl. Phys. Inst.) ; Kvaerno, H. (Oslo U.) ; Kweon, M.J. (Heidelberg U.) ; Kwon, Y. (Yonsei U.) ; Ladron de Guevara, P. (Mexico U., CEN) ; Lakomov, I. (Orsay, IPN) ; Langoy, R. (Bergen U.) ; La Pointe, S.L. (NIKHEF, Amsterdam) ; Lara, C. (Frankfurt U.) ; Lardeux, A. (SUBATECH, Nantes) ; La Rocca, P. (INFN, Catania) ; Lea, R. (INFN, Trieste) ; Lechman, M. (CERN) ; Lee, S.C. (Gangneung-Wonju Natl. U.) ; Lee, G.R. (Birmingham U.) ; Legrand, I. (CERN) ; Lehnert, J. (Frankfurt U.) ; Lemmon, R.C. (Daresbury) ; Lenhardt, M. (Darmstadt, GSI) ; Lenti, V. (INFN, Bari) ; Leon, H. (UNAM, Mexico) ; Leoncino, M. (INFN, Turin) ; Leon Monzon, I. (Sinaloa U.) ; Levai, P. (Hungarian Acad. Sci., Budapest) ; Li, S. (Clermont-Ferrand U.) ; Lien, J. (Bergen U.) ; Lietava, R. (Birmingham U.) ; Lindal, S. (Oslo U.) ; Lindenstruth, V. (Frankfurt U.) ; Lippmann, C. (Darmstadt, GSI) ; Lisa, M.A. (Ohio State U.) ; Ljunggren, H.M. (Lund U.) ; Lodato, D.F. (NIKHEF, Amsterdam) ; Loenne, P.I. (Bergen U.) ; Loggins, V.R. (Wayne State U.) ; Loginov, V. (Moscow Phys. Eng. Inst.) ; Lohner, D. (Heidelberg U.) ; Loizides, C. (LBL, Berkeley) ; Loo, K.K. (Helsinki Inst. of Phys.) ; Lopez, X. (Clermont-Ferrand U.) ; Lopez Torres, E. (Havana, CEADEN) ; Lovhoiden, G. (Oslo U.) ; Lu, X.G. (Heidelberg U.) ; Luettig, P. (Frankfurt U.) ; Lunardon, M. (INFN, Padua) ; Luo, J. (Hua-Zhong Normal U.) ; Luparello, G. (NIKHEF, Amsterdam) ; Luzzi, C. (CERN) ; Ma, R. (Yale U.) ; Ma, K. (Hua-Zhong Normal U.) ; Madagodahettige-Don, D.M. (Houston U.) ; Maevskaya, A. (Moscow, INR) ; Mager, M. (Darmstadt, Tech. Hochsch.) ; Mahapatra, D.P. (Bhubaneswar, Inst. Phys.) ; Maire, A. (Heidelberg U.) ; Malaev, M. (St. Petersburg, INP) ; Maldonado Cervantes, I. (Mexico U., CEN) ; Malinina, L. (Dubna, JINR) ; Mal'Kevich, D. (Moscow, ITEP) ; Malzacher, P. (Darmstadt, GSI) ; Mamonov, A. (RFNC-VNIIEF, Sarov) ; Manceau, L. (INFN, Turin) ; Mangotra, L. (Jammu U.) ; Manko, V. (Kurchatov Inst., Moscow) ; Manso, F. (Clermont-Ferrand U.) ; Manzari, V. (INFN, Bari) ; Mao, Y. (Hua-Zhong Normal U.) ; Marchisone, M. (Clermont-Ferrand U.) ; Mares, J. (Prague, Inst. Phys.) ; Margagliotti, G.V. (INFN, Trieste) ; Margotti, A. (INFN, Bologna) ; Marin, A. (Darmstadt, GSI) ; Markert, C. (Texas U.) ; Marquard, M. (Frankfurt U.) ; Martashvili, I. (Tennessee U.) ; Martin, N.A. (Darmstadt, GSI) ; Martinengo, P. (CERN) ; Martinez, M.I. (Puebla U., Inst. Fis.) ; Martinez Garcia, G. (SUBATECH, Nantes) ; Martynov, Y. (BITP, Kiev) ; Mas, A. (SUBATECH, Nantes) ; Masciocchi, S. (Darmstadt, GSI) ; Masera, M. (INFN, Turin) ; Masoni, A. (INFN, Cagliari) ; Massacrier, L. (SUBATECH, Nantes) ; Mastroserio, A. (INFN, Bari) ; Matyja, A. (Cracow, INP) ; Mayer, C. (Cracow, INP) ; Mazer, J. (Tennessee U.) ; Mazzoni, M.A. (INFN, Rome) ; Meddi, F. (INFN, Rome) ; Menchaca-Rocha, A. (UNAM, Mexico) ; Mercado Perez, J. (Heidelberg U.) ; Meres, M. (Comenius U.) ; Miake, Y. (Tsukuba U.) ; Mikhaylov, K. (Dubna, JINR) ; Milano, L. (CERN) ; Milosevic, J. (Oslo U.) ; Mischke, A. (NIKHEF, Amsterdam) ; Mishra, A.N. (Rajasthan U.) ; Miskowiec, D. (Darmstadt, GSI) ; Mitu, C. (Bucharest, Inst. Space Science) ; Mizuno, S. (Tsukuba U.) ; Mlynarz, J. (Wayne State U.) ; Mohanty, B. (Calcutta, VECC) ; Molnar, L. (Hungarian Acad. Sci., Budapest) ; Montano Zetina, L. (Caracas, IIEA) ; Monteno, M. (INFN, Turin) ; Montes, E. (Madrid, CIEMAT) ; Moon, T. (Yonsei U.) ; Morando, M. (INFN, Padua) ; Moreira De Godoy, D.A. (Sao Paulo U., Sao Carlos) ; Moretto, S. (INFN, Padua) ; Morreale, A. (Helsinki Inst. of Phys.) ; Morsch, A. (CERN) ; Muccifora, V. (Frascati) ; Mudnic, E. (Split Tech. U.) ; Muhuri, S. (Calcutta, VECC) ; Mukherjee, M. (Calcutta, VECC) ; Muller, H. (CERN) ; Munhoz, M.G. (Sao Paulo U., Sao Carlos) ; Murray, S. (iThemba LABS) ; Musa, L. (CERN) ; Musinsky, J. 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(DAPNIA, Saclay) ; Pereira De Oliveira Filho, E. (Sao Paulo U., Sao Carlos) ; Peresunko, D. (Kurchatov Inst., Moscow) ; Perez Lara, C.E. (NIKHEF, Amsterdam) ; Perrino, D. (INFN, Bari) ; Peryt, W. (Warsaw U. of Tech.) ; Pesci, A. (INFN, Bologna) ; Pestov, Y. (Novosibirsk, IYF) ; Petracek, V. (Prague, Tech. U.) ; Petran, M. (Prague, Tech. U.) ; Petris, M. (Bucharest, IFIN-HH) ; Petrov, P. (Birmingham U.) ; Petrovici, M. (Bucharest, IFIN-HH) ; Petta, C. (INFN, Catania) ; Piano, S. (INFN, Trieste) ; Pikna, M. (Comenius U.) ; Pillot, P. (SUBATECH, Nantes) ; Pinazza, O. (CERN) ; Pinsky, L. (Houston U.) ; Pitz, N. (Frankfurt U.) ; Piyarathna, D.B. (Houston U.) ; Planinic, M. (Boskovic Inst., Zagreb) ; Ploskon, M. (LBL, Berkeley) ; Pluta, J. (Warsaw U. of Tech.) ; Pocheptsov, T. (Dubna, JINR) ; Pochybova, S. (Hungarian Acad. Sci., Budapest) ; Podesta-Lerma, P.L.M. (Sinaloa U.) ; Poghosyan, M.G. (CERN) ; Polak, K. (Prague, Inst. Phys.) ; Polichtchouk, B. (Serpukhov, IHEP) ; Poljak, N. (NIKHEF, Amsterdam) ; Pop, A. (Bucharest, IFIN-HH) ; Porteboeuf-Houssais, S. (Clermont-Ferrand U.) ; Pospisil, V. (Prague, Tech. U.) ; Potukuchi, B. (Jammu U.) ; Prasad, S.K. (Wayne State U.) ; Preghenella, R. (INFN, Bologna) ; Prino, F. (INFN, Turin) ; Pruneau, C.A. (Wayne State U.) ; Pshenichnov, I. (Moscow, INR) ; Puddu, G. (INFN, Cagliari) ; Punin, V. (RFNC-VNIIEF, Sarov) ; Putis, M. (Kosice U.) ; Putschke, J. (Wayne State U.) ; Qvigstad, H. (Oslo U.) ; Rachevski, A. (INFN, Trieste) ; Rademakers, A. (CERN) ; Raiha, T.S. (Helsinki Inst. of Phys.) ; Rak, J. (Helsinki Inst. of Phys.) ; Rakotozafindrabe, A. (DAPNIA, Saclay) ; Ramello, L. (Piemonte Orientale U., Alessandria) ; Raniwala, S. (Rajasthan U.) ; Raniwala, R. (Rajasthan U.) ; Rasanen, S.S. (Helsinki Inst. of Phys.) ; Rascanu, B.T. (Frankfurt U.) ; Rathee, D. (Panjab U.) ; Rauch, W. (CERN) ; Rauf, A.W. (COMSATS, Islamabad) ; Razazi, V. (INFN, Cagliari) ; Read, K.F. (Tennessee U.) ; Real, J.S. (LPSC, Grenoble) ; Redlich, K. (Warsaw, Inst. Nucl. Studies) ; Reed, R.J. (Yale U.) ; Rehman, A. (Bergen U.) ; Reichelt, P. (Frankfurt U.) ; Reicher, M. (NIKHEF, Amsterdam) ; Reidt, F. (Heidelberg U.) ; Renfordt, R. (Frankfurt U.) ; Reolon, A.R. (Frascati) ; Reshetin, A. (Moscow, INR) ; Rettig, F. (Frankfurt U.) ; Revol, J.P. (CERN) ; Reygers, K. (Heidelberg U.) ; Riccati, L. (INFN, Turin) ; Ricci, R.A. (INFN, Legnaro) ; Richert, T. (Lund U.) ; Richter, M. (Oslo U.) ; Riedler, P. (CERN) ; Riegler, W. (CERN) ; Riggi, F. (INFN, Catania) ; Rodriguez Cahuantzi, M. (Puebla U., Inst. Fis.) ; Rodriguez Manso, A. (NIKHEF, Amsterdam) ; Roed, K. (Bergen U.) ; Rogochaya, E. (Dubna, JINR) ; Rohr, D. (Frankfurt U.) ; Rohrich, D. (Bergen U.) ; Romita, R. (Darmstadt, GSI) ; Ronchetti, F. (Frascati) ; Rosnet, P. (Clermont-Ferrand U.) ; Rossegger, S. (CERN) ; Rossi, A. (CERN) ; Roy, C. (Louis Pasteur U., Strasbourg I) ; Roy, P. (Saha Inst.) ; Rubio Montero, A.J. (Madrid, CIEMAT) ; Rui, R. (INFN, Trieste) ; Russo, R. (INFN, Turin) ; Ryabinkin, E. (Kurchatov Inst., Moscow) ; Rybicki, A. (Cracow, INP) ; Sadovsky, S. (Serpukhov, IHEP) ; Safarik, K. (CERN) ; Sahoo, R. (Indian Inst. Tech., Indore) ; Sahu, P.K. (Bhubaneswar, Inst. Phys.) ; Saini, J. (Calcutta, VECC) ; Sakaguchi, H. (Hiroshima U.) ; Sakai, S. (LBL, Berkeley) ; Sakata, D. (Tsukuba U.) ; Salgado, C.A. (Santiago de Compostela U.) ; Salzwedel, J. (Ohio State U.) ; Sambyal, S. (Jammu U.) ; Samsonov, V. (St. Petersburg, INP) ; Sanchez Castro, X. (Louis Pasteur U., Strasbourg I) ; Sandor, L. (Kosice, IEF) ; Sandoval, A. (UNAM, Mexico) ; Sano, M. (Tsukuba U.) ; Santagati, G. (INFN, Catania) ; Santoro, R. (CERN) ; Sarkamo, J. (Helsinki Inst. of Phys.) ; Sarkar, D. (Calcutta, VECC) ; Scapparone, E. (INFN, Bologna) ; Scarlassara, F. (INFN, Padua) ; Scharenberg, R.P. (Purdue U.) ; Schiaua, C. (Bucharest, IFIN-HH) ; Schicker, R. (Heidelberg U.) ; Schmidt, H.R. (Tubingen U.) ; Schmidt, C. (Darmstadt, GSI) ; Schuchmann, S. 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(CERN) ; Singaraju, R. (Calcutta, VECC) ; Singh, R. (Jammu U.) ; Singha, S. (Calcutta, VECC) ; Singhal, V. (Calcutta, VECC) ; Sinha, T. (Saha Inst.) ; Sinha, B.C. (Calcutta, VECC) ; Sitar, B. (Comenius U.) ; Sitta, M. (Piemonte Orientale U., Alessandria) ; Skaali, T.B. (Oslo U.) ; Skjerdal, K. (Bergen U.) ; Smakal, R. (Prague, Tech. U.) ; Smirnov, N. (Yale U.) ; Snellings, R.J.M. (NIKHEF, Amsterdam) ; Sogaard, C. (Lund U.) ; Soltz, R. (LLNL, Livermore) ; Song, J. (Pusan Natl. U.) ; Song, M. (Yonsei U.) ; Soos, C. (CERN) ; Soramel, F. (INFN, Padua) ; Sputowska, I. (Cracow, INP) ; Spyropoulou-Stassinaki, M. (Athens U.) ; Srivastava, B.K. (Purdue U.) ; Stachel, J. (Heidelberg U.) ; Stan, I. (Bucharest, Inst. Space Science) ; Stefanek, G. (Warsaw, Inst. Nucl. Studies) ; Steinpreis, M. (Ohio State U.) ; Stenlund, E. (Lund U.) ; Steyn, G. (iThemba LABS) ; Stiller, J.H. (Heidelberg U.) ; Stocco, D. (SUBATECH, Nantes) ; Stolpovskiy, M. (Serpukhov, IHEP) ; Strmen, P. 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Publication 2013
Imprint 26 Apr 2013
Number of pages 33
Note Comments: 33 pages, 21 captioned figures, 8 tables and author from page 28 to 30
35 pages, 21 captioned figures, 11 tables, authors from page 30, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/594
In: Eur. Phys. J. C 73 (2013) 2496
DOI 10.1140/epjc/s10052-013-2496-5
Subject category Particle Physics - Experiment ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Free keywords QCD ; particle and resonance production ; experimental results ; anti-baryon to baryon ratio ; proton-proton collisions ; LHC
Abstract The ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for anti-proton/proton, anti-$\Lambda/\Lambda$, anti-$\Xi^{+}/\Xi^{-}$ and anti-$\Omega^{+}/\Omega^{-}$ in pp collisions at $\sqrt{s}$ = 0.9, 2.76 and 7 TeV, measured with the ALICE detector at the LHC, are reported. Within the experimental uncertainties and ranges covered by our measurement, these ratios are independent of rapidity, transverse momentum and multiplicity for all measured energies. The results are compared to expectations from event generators, such as PYTHIA and HIJING/B, that are used to model the particle production in pp collisions. The energy dependence of anti-proton/proton, anti-$\Lambda/\Lambda$, anti-$\Xi^{+}/\Xi^{-}$ and anti-$\Omega^{+}/\Omega^{-}$, reaching values compatible with unity for $\sqrt{s}$ = 7 TeV, complement the earlier anti-proton/proton measurement of ALICE. These dependencies can be described by exchanges with the Regge-trajectory intercept of $\alpha_J$ ≈ 0.5, which are suppressed with increasing rapidity interval $\Delta y$. Any significant contribution of an exchange not suppressed at large $\Delta y$ (reached at LHC energies) is disfavoured.
Copyright/License publication: © 2013-2024 CERN (License: CC-BY-4.0)
preprint: © 2013-2024 CERN (License: CC-BY-3.0)



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