Production of J/psi and Y-mesons in proton-lead collisions at √sNN = 5 TeV

21 May 2014, 09:20
platinum (darmstadtium)



Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Open Heavy Flavour and Quarkonia Heavy flavor


Zhenwei Yang (Tsinghua University (CN))


The production of J/psi and Y-mesons decaying into dimuon final state is studied at the LHCb experiment, with rapidity 1.5 < y < 4.0 or −5.0 < y < −2.5 and transverse momentum $p_T$ < 15 GeV/c, in proton-lead collisions at a proton-nucleon centre-of-mass energy $\sqrt{s_{NN}}$ = 5 TeV. The analysis is based on a data sample corresponding to an integrated luminosity of 1.6 nb$^{−1}$. The forward-backward production ratio and the nuclear modification factor are determined for J/psi and Y(1S). Indication of forward backward production asymmetry is observed. There is also an indication of J/psi and Y(1S) production suppression with respect to proton-proton collisions in forward region and anti-shadowing effect in backward region.
On behalf of collaboration: LHCb

Primary author

Zhenwei Yang (Tsinghua University (CN))

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