Centrality dependence of inclusive J/ψ production in p-Pb collisions at √sNN = 5.02 TeV
ALICE Collaboration. (2015). Centrality dependence of inclusive J/ψ production in p-Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2015(11), Article 127. https://doi.org/10.1007/JHEP11(2015)127
Julkaistu sarjassa
Journal of High Energy PhysicsTekijät
Päivämäärä
2015Tekijänoikeudet
© 2015 CERN for the benefit of the ALICE Collaboration. This is an open access article funded by SCOAP3.
We present a measurement of inclusive J/ψ production in p-Pb collisions at
√
sNN = 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, pT, in the backward (−4.46 < ycms <
−2.96) and forward (2.03 < ycms < 3.53) rapidity intervals in the dimuon decay channel
and in the mid-rapidity region (−1.37 < ycms < 0.43) in the dielectron decay channel. The
backward and forward rapidity intervals correspond to the Pb-going and p-going direction,
respectively. The pT-differential J/ψ production cross section at backward and forward
rapidity is measured for several centrality classes, together with the corresponding average
pT and pT
2 values. The nuclear modification factor is presented as a function of centrality
for the three rapidity intervals, and as a function of pT for several centrality classes at
backward and forward rapidity. At mid- and forward rapidity, the J/ψ 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 pT of the J/ψ. 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.
...
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Springer Berlin HeidelbergISSN Hae Julkaisufoorumista
1127-2236Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/25380905
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