# Study of production and cold nuclear matter effects in pPb collisions at s NN √sNN = 5 TeV

Research output: Contribution to journalArticle

36 Scopus citations

### Abstract

Production of mesons in proton-lead collisions at a nucleon-nucleon centre-of-mass energy s NN √sNN = 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 (1S) mesons are determined. The data are compatible with the predictions for a suppression of (1S) 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.]

Original language English (US) 094 Journal of High Energy Physics 2014 7 https://doi.org/10.1007/JHEP07(2014)094 Published - 2014

### Cite this

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., ... Zvyagin, A. (2014). Study of production and cold nuclear matter effects in pPb collisions at s NN √sNN = 5 TeV. Journal of High Energy Physics, 2014(7), [094]. https://doi.org/10.1007/JHEP07(2014)094