학술논문

Multi-strange baryon production in pp collisions at root s=7 TeV with ALICE
Document Type
Author
Abelev, B.Adam, J.Adamova, D.Adare, A. M.Aggarwal, M. M.Rinella, G. AglieriAgocs, A. G.Agostinelli, A.Aguilar Salazar, S.Ahammed, Z.Ahmad, N.Masoodi, A. AhmadAhn, S. U.Akindinov, A.Aleksandrov, D.Alessandro, B.Alfaro Molina, R.Alici, A.Alkin, A.Almaraz Avina, E.Alme, J.Alt, T.Altini, V.Altinpinar, S.Altsybeev, I.Andrei, C.Andronic, A.Anguelov, V.Anielski, J.Anson, C.Anticic, T.Antinori, F.Antonioli, P.Aphecetche, L.Appelshaeuser, H.Arbor, N.Arcelli, S.Arend, A.Armesto, N.Arnaldi, R.Aronsson, T.Arsene, I. C.Arslandok, M.Asryan, A.Augustinus, A.Averbeck, R.Awes, T. C.Aysto, J.Azmi, M. D.Bach, M.Badala, A.Baek, Y. W.Bailhache, R.Bala, R.Ferroli, R. BaldiniBaldisseri, A.Baldit, A.Pedrosa, F. Baltasar Dos SantosBan, J.Baral, R. C.Barbera, R.Barile, F.Barnafoeldi, G. G.Barnby, L. S.Barret, V.Bartke, J.Basile, M.Bastid, N.Basu, S.Bathen, B.Batigne, G.Batyunya, B.Baumann, C.Bearden, I. G.Beck, H.Belikov, I.Bellini, F.Bellwied, R.Belmont-Moreno, E.Bencedi, G.Beole, S.Berceanu, I.Bercuci, A.Berdnikov, Y.Berenyi, D.Berzano, D.Betev, L.Bhasin, A.Bhati, A. K.Bhom, J.Bianchi, N.Bianchi, L.Bianchin, C.Bielcik, J.Bielcikova, J.Bilandzic, A.Bjelogrlic, S.Blanco, F.Blau, D.Blume, C.Boccioli, M.Bock, N.Boettger, S.Bogdanov, A.Boggild, H.Bogolyubsky, M.Boldizsar, L.Bombara, M.Book, J.Borel, H.Borissov, A.Bose, S.Bossu, F.Botje, M.Boyer, B.Braidot, E.Braun-Munzinger, P.Bregant, M.Breitner, T.Browning, T. A.Broz, M.Brun, R.Bruna, E.Bruno, G. E.Budnikov, D.Buesching, H.Bufalino, S.Bugaiev, K.Busch, O.Buthelezi, Z.Orduna, D. CaballeroCaffarri, D.Cai, X.Caines, H.Calvo Villar, E.Camerini, P.Canoa Roman, V.Romeo, G. CaraCarena, W.Carena, F.Carlin Filho, N.Carminati, F.Montoya, C. A. CarrilloDiaz, A. CasanovaCastellanos, J. CastilloHernandez, J. F. CastilloCasula, E. A. R.Catanescu, V.Cavicchioli, C.Ceballos Sanchez, C.Cepila, J.Cerello, P.Chang, B.Chapeland, S.Charvet, J. L.Chattopadhyay, S.Chawla, I.Cherney, M.Cheshkov, C.Cheynis, B.Barroso, V. ChibanteChinellato, D. D.Chochula, P.Chojnacki, M.Choudhury, S.Christakoglou, P.Christensen, C. H.Christiansen, PeterChujo, T.Chung, S. U.Cicalo, C.Cifarelli, L.Cindolo, F.Cleymans, J.Coccetti, F.Colamaria, F.Colella, D.Balbastre, G. Conesadel Valle, Z. ConesaConstantin, P.Contin, G.Contreras, J. G.Cormier, T. M.Morales, Y. CorralesCortese, P.Cortes Maldonado, I.Cosentino, M. R.Costa, F.Cotallo, M. E.Crescio, E.Crochet, P.Cruz Alaniz, E.Cuautle, E.Cunqueiro, L.Dainese, A.Dalsgaard, H. H.Danu, A.Das, I.Das, K.Das, D.Dash, A.Dash, S.De, S.de Barros, G. O. V.De Caro, A.de Cataldo, G.de Cuveland, J.De Falco, A.De Gruttola, D.Delagrange, H.Deloff, A.Demanov, V.De Marco, N.Denes, E.De Pasquale, S.Deppman, A.Erasmo, G. D.de Rooij, R.Diaz Corchero, M. A.Di Bari, D.Dietel, T.Di Liberto, S.Di Mauro, A.Di Nezza, P.Divia, R.Djuvsland, O.Dobrin, AlexandruDobrowolski, T.Dominguez, I.Doenigus, B.Dordic, O.Driga, O.Dubey, A. K.Ducroux, L.Dupieux, P.Majumdar, A. K. DuttaMajumdar, M. R. DuttaElia, D.Emschermann, D.Engel, H.Erdal, H. A.Espagnon, B.Estienne, M.Esumi, S.Evans, D.Eyyubova, G.Fabris, D.Faivre, J.Falchieri, D.Fantoni, A.Fasel, M.Fearick, R.Fedunov, A.Fehlker, D.Feldkamp, L.Felea, D.Fenton-Olsen, B.Feofilov, G.Fernandez Tellez, A.Ferretti, R.Ferretti, A.Figiel, J.Figueredo, M. A. S.Filchagin, S.Finogeev, D.Fionda, F. M.Fiore, E. M.Floris, M.Foertsch, S.Foka, P.Fokin, S.Fragiacomo, E.Frankenfeld, U.Fuchs, U.Furget, C.Girard, M. FuscoGaardhoje, J. J.Gagliardi, M.Gago, A.Gallio, M.Gangadharan, D. R.Ganoti, P.Garabatos, C.Garcia-Solis, E.Garishvili, I.Gerhard, J.Germain, M.Geuna, C.Gheata, A.Gheata, M.Ghidini, B.Ghosh, P.Gianotti, P.Girard, M. R.Giubellino, P.Gladysz-Dziadus, E.Glaessel, P.Gomez, R.Ferreiro, E. G.Gonzalez-Trueba, L. H.Gonzalez-Zamora, P.Gorbunov, S.Goswami, A.Gotovac, S.Grabski, V.Graczykowski, L. K.Grajcarek, R.Grelli, A.Grigoras, A.Grigoras, C.Grigoriev, V.Grigoryan, A.Grigoryan, S.Grinyov, B.Grion, N.Gros, PhilippeGrosse-Oetringhaus, J. F.Grossiord, J. -Y.Grosso, R.Guber, F.Guernane, R.Guerra Gutierrez, C.Guerzoni, B.Guilbaud, M.Gulbrandsen, K.Gunji, T.Gupta, A.Gupta, R.Gutbrod, H.Haaland, O.Hadjidakis, C.Haiduc, M.Hamagaki, H.Hamar, G.Han, B. H.Hanratty, L. D.Hansen, A.Harmanova, Z.Harris, J. W.Hartig, M.Hasegan, D.Hatzifotiadou, D.Hayrapetyan, A.Heckel, S. T.Heide, M.Helstrup, H.Herghelegiu, A.Herrera Corral, G.Herrmann, N.Hetland, K. F.Hicks, B.Hille, P. T.Hippolyte, B.Horaguchi, T.Hori, Y.Hristov, P.Hrivnacova, I.Huang, M.Humanic, T. J.Hwang, D. S.Ichou, R.Ilkaev, R.Ilkiv, I.Inaba, M.Incani, E.Innocenti, G. M.Innocenti, P. G.Ippolitov, M.Irfan, M.Ivan, C.Ivanov, A.Ivanov, V.Ivanov, M.Ivanytskyi, O.Jacholkowski, A.Jacobs, P. M.Jancurova, L.Jang, H. J.Jangal, S.Janik, R.Janik, M. A.Jayarathna, P. H. S. Y.Jena, S.Jha, D. M.Jimenez Bustamante, R. T.Jirden, L.Jones, P. 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L.Lara, C.Lardeux, A.La Rocca, P.Lazzeroni, C.Lea, R.Le Bornec, Y.Lechman, M.Lee, S. C.Lee, G. R.Lee, K. S.Lefevre, F.Lehnert, J.Leistam, L.Lenhardt, M.Lenti, V.Leon, H.Leon Monzon, I.Vargas, H. LeonLevai, P.Lien, J.Lietava, R.Lindal, S.Lindenstruth, V.Lippmann, C.Lisa, M. A.Liu, L.Loenne, P. I.Loggins, V. R.Loginov, V.Lohn, S.Lohner, D.Loizides, C.Loo, K. K.Lopez, X.Lopez Torres, E.Lovhoiden, G.Lu, X. -G.Luettig, P.Lunardon, M.Luo, J.Luparello, G.Luquin, L.Luzzi, C.Ma, K.Ma, R.Madagodahettige-Don, D. M.Maevskaya, A.Mager, M.Mahapatra, D. P.Maire, A.Malaev, M.Maldonado Cervantes, I.Malinina, L.Mal'Kevich, D.Malzacher, P.Mamonov, A.Manceau, L.Mangotra, L.Manko, V.Manso, F.Manzari, V.Mao, Y.Marchisone, M.Mares, J.Margagliotti, G. V.Margotti, A.Marin, A.Tobon, C. A. MarinMarkert, C.Martashvili, I.Martinengo, P.Martinez, M. I.Martinez Davalos, A.Garcia, G. MartinezMartynov, Y.Mas, A.Masciocchi, S.Masera, M.Masoni, A.Massacrier, L.Mastromarco, M.Mastroserio, A.Matthews, Z. L.Matyja, A.Mayani, D.Mayer, C.Mazer, J.Mazzoni, M. A.Meddi, F.Menchaca-Rocha, A.Perez, J. MercadoMeres, M.Miake, Y.Milano, L.Milosevic, J.Mischke, A.Mishra, A. N.Miskowiec, D.Mitu, C.Mlynarz, J.Mohanty, A. K.Mohanty, B.Molnar, L.Montano Zetina, L.Monteno, M.Montes, E.Moon, T.Morando, M.Moreira De Godoy, D. A.Moretto, S.Morsch, A.Muccifora, V.Mudnic, E.Muhuri, S.Mukherjee, M.Mueller, H.Munhoz, M. G.Musa, L.Musso, A.Nandi, B. K.Nania, R.Nappi, E.Nattrass, C.Naumov, N. P.Navin, S.Nayak, T. K.Nazarenko, S.Nazarov, G.Nedosekin, A.Nielsen, B. S.Niida, T.Nikolaev, S.Nikolic, V.Nikulin, V.Nikulin, S.Nilsen, B. S.Nilsson, M. S.Noferini, F.Nomokonov, P.Nooren, G.Novitzky, N.Nyanin, A.Nyatha, A.Nygaard, C.Nystrand, J.Ochirov, A.Oeschler, H.Oh, S. K.Oh, S.Oleniacz, J.Oppedisano, C.Ortiz Velasquez, AntonioOrtona, G.Oskarsson, AndersOstrowski, P.Otwinowski, J.Oyama, K.Ozawa, K.Pachmayer, Y.Pachr, M.Padilla, F.Pagano, P.Paic, G.Painke, F.Pajares, C.Pal, S. 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G.Yamaguchi, Y.Yang, S.Yang, H.Yasnopolskiy, S.Yi, J.Yin, Z.Yoo, I. -K.Yoon, J.Yu, W.Yuan, X.Yushmanov, I.Zach, C.Zampolli, C.Zaporozhets, S.Zarochentsev, A.Zavada, P.Zaviyalov, N.Zbroszczyk, H.Zelnicek, P.Zgura, I. S.Zhalov, M.Zhang, X.Zhang, H.Zhou, Y.Zhou, D.Zhou, F.Zhu, X.Zhu, J.Zichichi, A.Zimmermann, A.Zinovjev, G.Zoccarato, Y.Zynovyev, M.Zyzak, M.
Source
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 712(4-5):309-318
Subject
Multi-strange baryons
P-T Spectra
Mid-rapidity
Proton-proton
LHC
ALICE
Naturvetenskap
Fysik
Subatomär fysik
Natural Sciences
Physical Sciences
Subatomic Physics
Language
English
ISSN
0370-2693
Abstract
A measurement of the multi-strange Xi(-) and Omega(-) baryons and their antiparticles by the ALICE experiment at the CERN Large Hadron Collider (LHC) is presented for inelastic proton-proton collisions at a centre-of-mass energy of 7 TeV. The transverse momentum (p(T)) distributions were studied at mid-rapidity (vertical bar y vertical bar < 0.5) in the range of 0.6 < p(T) < 8.5 GeV/c Xi(-) for and Xi(+) baryons, and in the range of 0.8 < P-T < 5 GeV/c for Omega(-) and<(Omega)over bar>(+). Baryons and antibaryons were measured as separate particles and we find that the baryon to antibaryon ratio of both particle species is consistent with unity over the entire range of the measurement. The statistical precision of the current data has allowed us to measure a difference between the mean p(T) of Xi(-) ((Xi) over bar)(+) and Omega(-) ((Omega) over bar (+)). Particle yields, mean pi, and the spectra in the intermediate pi range are not well described by the PYTHIA Perugia 2011 tune Monte Carlo event generator, which has been tuned to reproduce the early LHC data. The discrepancy is largest for Omega(-)((Omega) over bar (+)). This PYTHIA tune approaches the pi spectra of Xi(-) and Xi(+) baryons below p(T) <0.85 GeV/c and describes the Xi(-) and Xi(+) spectra above p(T) > 6.0 GeV/c. We also illustrate the difference between the experimental data and model by comparing the corresponding ratios of (Omega(-) +(Omega) over bar (+))/(Xi(-) + Xi(+)) as a function of transverse mass. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.