Study of production and cold nuclear matter effects in pPb collisions at = 5 TeV
Abstract
Production of mesons in proton-lead collisions at a nucleon-nucleon centre-of-mass energy = 5 TeV is studied with the LHCb detector. The analysis is based on a data sample corresponding to an integrated luminosity of 1 .6 nb-1. The mesons of transverse momenta up to 15 GeV/ c are reconstructed in the dimuon decay mode. The rapidity coverage in the centre-of-mass system is 1 .5 < y < 4 .0 (forward region) and -5 .0 < y < -2 .5 (backward region). The forward-backward production ratio and the nuclear modification factor for (1 S) mesons are determined. The data are compatible with the predictions for a suppression of (1 S) production with respect to proton-proton collisions in the forward region, and an enhancement in the backward region. The suppression is found to be smaller than in the case of prompt J/ψ mesons. [Figure not available: see fulltext.]
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- July 2014
- DOI:
- 10.1007/JHEP07(2014)094
- arXiv:
- arXiv:1405.5152
- Bibcode:
- 2014JHEP...07..094A
- Keywords:
-
- Relativistic heavy ion physics;
- Quarkonium;
- Heavy quark production;
- Heavy Ions;
- Particle and resonance production;
- Nuclear Experiment;
- High Energy Physics - Experiment
- E-Print:
- 21 pages, 3 figures, published to JHEP