학술논문

Suppression of Upsilon(1S) at forward rapidity in Pb-Pb collisions at root s(NN)=2.76 TeV
Document Type
Author
Abelev, B.Adam, J.Adamova, D.Aggarwal, M. M.Agnello, M.Agostinelli, A.Agrawal, N.Ahammed, Z.Ahmad, N.Ahmed, I.Ahn, S. U.Ahn, S. A.Aimo, I.Aiola, S.Ajaz, M.Akindinov, A.Alam, S. N.Aleksandrov, D.Alessandro, B.Alexandre, D.Alici, A.Alkin, A.Alme, J.Alt, T.Altinpinar, S.Altsybeev, I.Prado, C. Alves GarciaAndrei, C.Andronic, A.Anguelov, V.Anielski, J.Anticic, T.Antinori, F.Antonioli, P.Aphecetche, L.Appelshaeuser, H.Arcelli, S.Armesto, N.Arnaldi, R.Aronsson, T.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Awes, T. C.Azmi, M. D.Bach, M.Badala, A.Baek, Y. W.Bagnasco, S.Bailhache, R.Bala, R.Baldisseri, A.Pedrosa, F. Baltasar Dos SantosBaral, R. C.Barbera, R.Barile, F.Barnaflodi, G. G.Barnby, L. S.Barret, V.Bartke, J.Basile, M.Bastid, N.Basu, S.Bathen, B.Batigne, G.Batyunya, B.Batzing, P. C.Baumann, C.Bearden, I. G.Beck, H.Bedda, C.Behera, N. K.Belikov, I.Bellwied, R.Belmont-Moreno, E.Belmont, R. IIIBelyaev, V.Bencedi, G.Beole, S.Berceanu, I.Bercuci, A.Berdnikov, Y.Berenyi, D.Berger, M. E.Bertens, R. A.Berzano, D.Betev, L.Bhasin, A.Bhati, A. K.Bhattacharjee, B.Bhom, J.Bianchi, L.Bianchi, N.Bianchin, C.Bielcik, J.Bielcikova, J.Bilandzic, A.Bjelogrlic, S.Blanco, F.Blau, D.Blume, C.Bock, F.Bogdanov, A.Boggild, H.Bogolyubsky, M.Bohmer, F. V.Boldizsar, L.Bombara, M.Book, J.Borel, H.Borissov, A.Bossu, F.Botje, M.Botta, E.Boettger, S.Braun-Munzinger, P.Bregant, M.Breitner, T.Broker, T. A.Browning, T. A.Broz, M.Bruna, E.Bruno, G. E.Budnikov, D.Buesching, H.Bufalino, S.Buncic, P.Busch, O.Buthelezi, Z.Caffarri, D.Cai, X.Caines, H.Diaz, L. CaleroCaliva, A.Villar, E. CalvoCamerini, P.Carena, F.Carena, W.Castellanos, J. CastilloCasula, E. A. R.Catanescu, V.Cavicchioli, C.Sanchez, C. CeballosCepila, J.Cerello, P.Chang, B.Chapeland, S.Charvet, J. L.Chattopadhyay, S.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. 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A.Volpe, G.von Haller, B.Vorobyev, I.Vranic, D.Vrlakova, J.Vulpescu, B.Vyushin, A.Wagner, B.Wagner, J.Wagner, V.Wang, M.Wang, Y.Watanabe, D.Weber, M.Weber, S. G.Wessels, J. P.Westerhoff, U.Wiechula, J.Wikne, J.Wilde, M.Wilk, G.Wilkinson, J.Williams, M. C. S.Windelband, B.Winn, M.Yaldo, C. G.Yamaguchi, Y.Yang, H.Yang, P.Yang, S.Yano, S.Yasnopolskiy, S.Yi, J.Yin, Z.Yoo, I. -K.Yushmanov, I.Zaccolo, V.Zach, C.Zaman, A.Zampolli, C.Zaporozhets, S.Zarochentsev, A.Zavada, P.Zaviyalov, N.Zbroszczyk, H.Zgura, I. S.Zhalov, M.Zhang, H.Zhang, X.Zhang, Y.Zhao, C.Zhigareva, N.Zhou, D.Zhou, F.Zhou, Y.Zhou, ZhuoZhu, H.Zhu, J.Zhu, X.Zichichi, A.Zimmermann, A.Zimmermann, M. B.Zinovjev, G.Zoccarato, Y.Zyzak, M.
Source
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 738:361-372
Subject
Naturvetenskap
Fysik
Subatomär fysik
Natural Sciences
Physical Sciences
Subatomic Physics
Language
English
ISSN
0370-2693
Abstract
We report on the measurement of the inclusive Upsilon(1S) production in Pb-Pb collisions at root s(NN) = 2.76 TeV carried out at forward rapidity (2.5 < y < 4) and down to zero transverse momentum using its mu(+)mu(-) decay channel with the ALICE detector at the Large Hadron Collider. Astrong suppression of the inclusive Upsilon(1S) yield is observed with respect to pp collisions scaled by the number of independent nucleo-nnucleon collisions. The nuclear modification factor, for events in the 0-90% centrality range, amounts to 0.30 +/- 0.05(stat) +/- 0.04(syst). The observed Upsilon(1S) suppression tends to increase with the centrality of the collision and seems more pronounced than in corresponding mid-rapidity measurements. Our results are compared with model calculations, which are found to underestimate the measured suppression and fail to reproduce its rapidity dependence. (C) 2014 The Authors. Published by Elsevier B. V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP(3).