Abstract
The production of , and hadrons is studied in proton-lead collisions at a center-of-mass energy per nucleon pair of recorded with the LHCb detector at the LHC. The measurement uses a dataset corresponding to an integrated luminosity of for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and for the lead beam projected into the LHCb detector (corresponding to measuring hadron production at negative rapidity). Double-differential cross sections are measured and used to determine forward-backward ratios and nuclear modification factors, which directly probe nuclear effects in the production of beauty hadrons. The double-differential cross sections are measured as a function of the beauty-hadron transverse momentum and rapidity in the nucleon-nucleon center-of-mass frame. Forward-to-backward cross section ratios and nuclear modification factors indicate a significant nuclear suppression at positive rapidity. The ratio of over production cross sections is reported and is consistent with the corresponding measurement in collisions.
7 More- Received 18 February 2019
DOI:https://doi.org/10.1103/PhysRevD.99.052011
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
© 2019 CERN, for the LHCb Collaboration