Abstract
The production of B+, B0 and Λ0b hadrons is studied in proton-lead collisions at a center-of-mass energy per nucleon pair of √sNN = 8.16 TeV recorded with the LHCb detector at the LHC. The measurement uses a data set corresponding to an integrated luminosity of 12.2 ± 0.3 nb−1 for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and 18.6 ± 0.5 nb−1 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 Λ0b over B0 production cross sections is reported and is consistent with the corresponding measurement in pp collisions.
Original language | English |
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Article number | 052011 |
Number of pages | 21 |
Journal | Physical Review D |
Volume | 99 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Mar 2019 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)