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J/psi Polarization in pp Collisions at root s=7 TeV

Abelev, B.; Quintana, A. Abrahantes; Adamova, D.; Adare, A. M.; Aggarwal, M. M.; Rinella, G. Aglieri; Agocs, A. G.; Agostinelli, A.; Aguilar Salazar, S. and Ahammed, Z., et al. (2012) In Physical Review Letters 108(8).
Abstract
The ALICE Collaboration has studied J/psi production in pp collisions at root s = 7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/psi polarization parameters lambda(theta) and lambda(phi) were obtained. The study was performed in the kinematic region 2: 5 < y < 4, 2 < p(t) < 8 GeV/c, in the helicity and Collins-Soper reference frames. In both frames, the polarization parameters are compatible with zero, within uncertainties.
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Physical Review Letters
volume
108
issue
8
publisher
American Physical Society
external identifiers
  • wos:000300669600014
  • scopus:84861337245
ISSN
1079-7114
DOI
10.1103/PhysRevLett.108.082001
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English
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yes
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517bddf2-4aaa-4354-82c2-4ccda01cdd40 (old id 2383329)
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2012-06-05 08:52:43
date last changed
2017-08-20 03:19:55
@article{517bddf2-4aaa-4354-82c2-4ccda01cdd40,
  abstract     = {The ALICE Collaboration has studied J/psi production in pp collisions at root s = 7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/psi polarization parameters lambda(theta) and lambda(phi) were obtained. The study was performed in the kinematic region 2: 5 &lt; y &lt; 4, 2 &lt; p(t) &lt; 8 GeV/c, in the helicity and Collins-Soper reference frames. In both frames, the polarization parameters are compatible with zero, within uncertainties.},
  author       = {Abelev, B. and Quintana, A. Abrahantes and Adamova, D. and Adare, A. M. and Aggarwal, M. M. and Rinella, G. Aglieri and Agocs, A. G. and Agostinelli, A. and Aguilar Salazar, S. and Ahammed, Z. and Ahmad, N. and Masoodi, A. Ahmad and Ahn, S. U. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and AlfaroMolina, R. and Alici, A. and Alkin, A. and Almaraz Avina, E. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Anguelov, V. and Anson, C. and Anticic, T. and Antinori, F. and Antonioli, P. and Aphecetche, L. and Appelshaeuser, H. and Arbor, N. and Arcelli, S. and Arend, A. and Armesto, N. and Arnaldi, R. and Aronsson, T. and Arsene, I. C. and Arslandok, M. and Asryan, A. and Augustinus, A. and Averbeck, R. and Awes, T. C. and Aysto, J. and Azmi, M. D. and Bach, M. and Badala, A. and Baek, Y. W. and Bailhache, R. and Bala, R. and Ferroli, R. Baldini and Baldisseri, A. and Baldit, A. and Pedrosa, F. Baltasar Dos Santos and Ban, J. and Baral, R. C. and Barbera, R. and Barile, F. and Barnafoeldi, G. G. and Barnby, L. S. and Barret, V. and Bartke, J. and Basile, M. and Bastid, N. and Bathen, B. and Batigne, G. and Batyunya, B. and Baumann, C. and Bearden, I. G. and Beck, H. and Belikov, I. and Bellini, F. and Bellwied, R. and Belmont-Moreno, E. and Beole, S. and Berceanu, I. and Bercuci, A. and Berdnikov, Y. and Berenyi, D. and Bergmann, C. and Berzano, D. and Betev, L. and Bhasin, A. and Bhati, A. K. and Bianchi, N. and Bianchi, L. and Bianchin, C. and Bielcik, J. and Bielcikova, J. and Bilandzic, A. and Blanco, F. and Blanco, F. and Blau, D. and Blume, C. and Boccioli, M. and Bock, N. and Bogdanov, A. and Boggild, H. and Bogolyubsky, M. and Boldizsar, L. and Bombara, M. and Book, J. and Borel, H. and Borissov, A. and Bortolin, C. and Bose, S. and Bossu, F. and Botje, M. and Boettger, S. and Boyer, B. and Braun-Munzinger, P. and Bregant, M. and Breitner, T. and Broz, M. and Brun, R. and Bruna, E. and Bruno, G. E. and Budnikov, D. and Buesching, H. and Bufalino, S. and Bugaiev, K. and Busch, O. and Buthelezi, Z. and Caffarri, D. and Cai, X. and Caines, H. and Calvo Villar, E. and Camerini, P. and Canoa Roman, V. and Romeo, G. Cara and Carena, W. and Carena, F. and Carlin Filho, N. and Carminati, F. and Montoya, C. A. Carrillo and Diaz, A. Casanova and Caselle, M. and Castellanos, J. Castillo and Hernandez, J. F. Castillo and Casula, E. A. R. and Catanescu, V. and Cavicchioli, C. and Cepila, J. and Cerello, P. and Chang, B. and Chapeland, S. and Charvet, J. L. and Chattopadhyay, S. and Chattopadhyay, S. and Cherney, M. and Cheshkov, C. and Cheynis, B. and Chiavassa, E. and Barroso, V. Chibante and Chinellato, D. D. and Chochula, P. and Chojnacki, M. and Christakoglou, P. and Christensen, C. H. and Christiansen, Peter and Chujo, T. and Chung, S. U. and Cicalo, C. and Cifarelli, L. and Cindolo, F. and Cleymans, J. and Coccetti, F. and Coffin, J. -P. and Colamaria, F. and Colella, D. and Balbastre, G. Conesa and del Valle, Z. Conesa and Constantin, P. and Contin, G. and Contreras, J. G. and Cormier, T. M. and Morales, Y. Corrales and Cortese, P. and Cortes Maldonado, I. and Cosentino, M. R. and Costa, F. and Cotallo, M. E. and Crescio, E. and Crochet, P. and Cruz Alaniz, E. and Cuautle, E. and Cunqueiro, L. and Dainese, A. and Dalsgaard, H. 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T. and Hippolyte, B. and Horaguchi, T. and Hori, Y. and Hristov, P. and Hrivnacova, I. and Huang, M. and Huber, S. and Humanic, T. J. and Hwang, D. S. and Ichou, R. and Ilkaev, R. and Ilkiv, I. and Inaba, M. and Incani, E. and Innocenti, P. G. and Innocenti, G. M. and Ippolitov, M. and Irfan, M. and Ivan, C. and Ivanov, A. and Ivanov, M. and Ivanov, V. and Ivanytskyi, O. and Jacholkowski, A. and Jacobs, P. M. and Jancurova, L. and Jangal, S. and Janik, M. A. and Janik, R. and Jayarathna, P. H. S. Y. and Jena, S. and Jimenez Bustamante, R. T. and Jirden, L. and Jones, P. G. and Jung, H. and Jung, W. and Jusko, A. and Kaidalov, A. B. and Kakoyan, V. and Kalcher, S. and Kalinak, P. and Kalisky, M. and Kalliokoski, T. and Kalweit, A. and Kanaki, K. and Kang, J. H. and Kaplin, V. and Uysal, A. Karasu and Karavichev, O. and Karavicheva, T. and Karpechev, E. and Kazantsev, A. and Kebschull, U. and Keidel, R. and Khan, M. M. and Khan, S. 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Xaplanteris and Yang, H. and Yano, S. and Yasnopolskiy, S. and Yi, J. and Yin, Z. and Yokoyama, H. and Yoo, I. -K. and Yoon, J. and Yu, W. and Yuan, X. and Yushmanov, I. and Zach, C. and Zampolli, C. and Zaporozhets, S. and Zarochentsev, A. and Zavada, P. and Zaviyalov, N. and Zbroszczyk, H. and Zelnicek, P. and Zgura, I. and Zhalov, M. and Zhang, X. and Zhou, F. and Zhou, D. and Zhou, Y. and Zhu, X. and Zichichi, A. and Zimmermann, A. and Zinovjev, G. and Zoccarato, Y. and Zynovyev, M.},
  issn         = {1079-7114},
  language     = {eng},
  number       = {8},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {J/psi Polarization in pp Collisions at root s=7 TeV},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.108.082001},
  volume       = {108},
  year         = {2012},
}