phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV
ADAM, J; ADAMOVA, D; AGGARWAL, MM; RINELLA, GA; AGNELLO, M; AGRAWAL, N; AHAMMED, Z; AHN, SU; AIMO, I; AIOLA, S; AJAZ, M; AKINDINOV, A; ALAM, SN; ALEKSANDROV, D; ALESSANDRO, B; ALEXANDRE, D; MOLINA, RA; ALICI, A; ALKIN, A; ALMARAZ, JRM; ALME, J; ALT, T; ALTINPINAR, S; ALTSYBEEV, I; PRADO, CAG; ANDREI, C; ANDRONIC, A; ANGUELOV, V; ANIELSKI, J; ANTICIC, T; ANTINORI, F; ANTONIOLI, P; APHECETCHE, L; APPELSHASER, H; ARCELLI, S; ARMESTO, N; ARNALDI, R; ARSENE, IC; ARSLANDOK, M; AUDURIER, B; AUGUSTINUS, A; AVERBECK, R; AZMI, MD; BACH, M; BADALA, A; BAEK, YW; BAGNASCO, S; BAILHACHE, R; BALA, R; BALDISSERI, A; PEDROSA, FBD; BARAL, RC; BARBANO, AM; BARBERA, R; BARILE, F; BARNAFOOLDI, GG; BARNBY, LS; BARRET, V; BARTALINI, P; BARTH, K; BARTKE, J; BARTSCH, E; BASILE, M; BASTID, N; BASU, S; BATHEN, B; BATIGNE, G; CAMEJO, AB; BATYUNYA, B; BATZING, PC; BEARDEN, IG; BECK, H; BEDDA, C; BEHERA, NK; BELIKOV, I; BELLINI, F; MARTINEZ, HB; BELLWIED, R; BELMONT, R; BELMONT-MORENO, E; BELYAEV, V; BENCEDI, G; BEOLE, S; BERCEANU, I; BERCUCI, A; BERDNIKOV, Y; BERENYI, D; BERTENS, RA; BERZANO, D; BETEV, L; BHASIN, A; BHAT, IR; BHATI, AK; BHATTACHARJEE, B; BHOM, J; BIANCHI, L; BIANCHI, N; BIANCHIN, C; BIELCIK, J; BIELCIKOVA, J; BILANDZIC, A; BISWAS, R; BISWAS, S; BJELOGRLIC, S; BLAIR, JT; BLANCO, F; BLAU, D; BLUME, C; BOCK, F; BOGDANOV, A; BOGGILD, H; BOLDIZSAR, L; BOMBARA, M; BOOK, J; BOREL, H; BORISSOV, A; BORRI, M; BOSSU, F; BOTTA, E; BOTTGER, S; BRAUN-MUNZINGER, P; BREGANT, M; BREITNER, T; BROKER, TA; BROWNING, TA; BROZ, M; BRUCKEN, EJ; BRUNA, E; BRUNO, GE; BUDNIKOV, D; BUESCHING, H; BUFALINO, S; BUNCIC, P; BUSCH, O; BUTHELEZI, Z; BUTT, JB; BUXTON, JT; CAFFARRI, D; CAI, X; CAINES, H; DIAZ, LC; CALIVA, A; VILLAR, EC; CAMERINI, P; CARENA, F; CARENA, W; CARNESECCHI, F; CASTELLANOS, JC; CASTRO, AJ; CASULA, EAR; CAVICCHIOLI, C; SANCHEZ, CC; CEPILA, J; CERELLO, P; CERKALA, J; CHANG, B; CHAPELAND, S; CHARTIER, M; CHARVET, JL; CHATTOPADHYAY, S; CHATTOPADHYAY, S; CHELNOKOV, V; CHERNEY, M; CHESHKOV, C; CHEYNIS, B; 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Date:
2017
Abstract:
The first study of phi-meson production in p-Pb collisions at forward and backward rapidity, at a nucleonnucleon centre-of-mass energy root s(NN)= 5.02 TeV, has been performed with the ALICE apparatus at the LHC. The phi-mesons have been identified in the dimuon decay channel in the transverse momentum (p(T)) range 1 < p(T) < 7GeV/c, both in the p-going (2.03 < y < 3.53) and the Pb-going (-4.46 < y < -2.96) directions - where ystands for the rapidity in the nucleon-nucleon centre-of-mass - the integrated luminosity amounting to 5.01 +/- 0.19nb(-1) and 5.81 +/- 0.20nb(-1), respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward ratio for f-meson production is measured for 2.96 <|y| < 3.53, resulting in a ratio similar to 0.5 with no significant p(T) dependence within the uncertainties. The p(T) dependence of the phi nuclear modification factor R-pPb exhibits an enhancement up to a factor 1.6 at p(T) = 3-4GeV/c in the Pb-going direction. The p(T) dependence of the f-meson cross section in pp collisions at root s= 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for 1 < pT< 5GeV/c and 2.5 < y < 4, for a 78 +/- 3nb(-1) integrated luminosity sample. (C) 2017 The Author(s). Published by Elsevier B.V.
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