Production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN = 5.02 TeV

Abelev, B. and Adam, J. and Adamova, D. and Aggarwal, M. M. and Rinella, G. A. and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Kiss, Gábor and Varga-Kőfaragó, Mónika and Lévai, Péter and Oláh, László and Pochybova, Sona (2015) Production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN = 5.02 TeV. PHYSICS LETTERS B, 740. pp. 105-117. ISSN 0370-2693

Preview

Text 1410.2234.pdf Available under License Creative Commons Attribution. Download (480kB) | Preview

Abstract

We report on the production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN = 5.02 TeV at the LHC. The measurement is performed with the ALICE detector at backward (−4.46 < ycms < −2.96) and forward (2.03 < ycms < 3.53) rapidity down to zero transverse momentum. The produc- tion cross sections of the ϒ(1S) and ϒ(2S) are presented, as well as the nuclear modification factor and the ratio of the forward to backward yields of ϒ(1S). A suppression of the inclusive ϒ(1S) yield in p–Pb collisions with respect to the yield from pp collisions scaled by the number of binary nucleon- nucleon collisions is observed at forward rapidity but not at backward rapidity. The results are com- pared to theoretical model calculations including nuclear shadowing or partonic energy loss effects.

Actions (login required)

Edit Item