Centrality dependence of inclusive J/psi production in p-Pb collisions at root S-NN=5.02TeV

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Adam , J , Brucken , E J , Chang , B , Hilden , T E , Kim , D J , Kral , J , Mieskolainen , M M , Orava , R , Rak , J , Rasanen , S S , Snellman , T W , Trzaska , W H & The ALICE Collaboration 2015 , ' Centrality dependence of inclusive J/psi production in p-Pb collisions at root S-NN=5.02TeV ' Journal of High Energy Physics , no. 11 , 127 . DOI: 10.1007/JHEP11(2015)127

Title: Centrality dependence of inclusive J/psi production in p-Pb collisions at root S-NN=5.02TeV
Author: Adam, J.; Adamova, D.; Aggarwal, M.; Rinella, G. Aglieri; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahn, S. U.; Aimo, I.; Aiola, S.; Ajaz, M.; Akindinov, A.; Alam, S. N.; Aleksandrov, D.; Alessandro, B.; Alexandre, D.; Molina, R. Alfaro; Alici, A.; Alkin, A.; Almaraz, J. R. M.; Alme, J.; Alt, T.; Altinpinar, S.; Altsybeev, I.; Prado, C. Alves Garcia; Andrei, C.; Andronic, A.; Anguelov, V.; Anielski, J.; Anticic, T.; Antinori, F.; Antonioli, P.; Aphecetche, L.; Appelshaeuser, H.; Arcelli, S.; Armesto, N.; Arnaldi, R.; Arsene, I. C.; Arslandok, M.; Brucken, E. J.; Chang, B.; Hilden, T. E.; Kim, D. J.; Kral, J.; Mieskolainen, M. M.; Orava, R.; Rak, J.; Rasanen, S. S.; Snellman, T. W.; Trzaska, W. H.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics (HIP) (-2009)
Date: 2015-11-19
Language: eng
Number of pages: 33
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
URI: http://hdl.handle.net/10138/159534
Abstract: We present a measurement of inclusive J/psi production in p-Pb collisions at root S-NN = 5.02 TeV as a function of the centrality of the collision, as estimated from the energy deposited in the Zero Degree Calorimeters. The measurement is performed with the ALICE detector down to zero transverse momentum, p(T), in the backward (-4.46 <y(cms) <-2.96) and forward (2.03 <y(cms) <3.53) rapidity intervals in the dimuon decay channel and in the mid-rapidity region (-1.37 <y(cms) <0.43) in the dielectron decay channel. The backward and forward rapidity intervals correspond to the Pb-going and p-going direction, respectively. The p(T)-differential J/psi production cross section at backward and forward rapidity is measured for several centrality classes, together with the corresponding average p(T) and p(T)(2) values. The nuclear modification factor is presented as a function of centrality for the three rapidity intervals, and as a function of p(T) for several centrality classes at backward and forward rapidity. At mid-and forward rapidity, the J/psi yield is suppressed up to 40% compared to that in pp interactions scaled by the number of binary collisions. The degree of suppression increases towards central p-Pb collisions at forward rapidity, and with decreasing p(T) of the J/psi. At backward rapidity, the nuclear modification factor is compatible with unity within the total uncertainties, with an increasing trend from peripheral to central p-Pb collisions.
Subject: Quark gluon plasma
QCD
Heavy Ions
PROTON-NUCLEUS COLLISIONS
TRANSVERSE-MOMENTUM DEPENDENCE
CHARMONIUM PRODUCTION
ROOT-S=7 TEV
ENERGY-LOSS
J-PSI
SUPPRESSION
DISTRIBUTIONS
RAPIDITY
LHC
114 Physical sciences
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