Measurement of <i>B</i><SUP>+</SUP>, <i>B</i><SUP>0</SUP> and Λ<i><sub>b</sub></i><SUP>0</SUP> production in <i>p</i>Pb collisions at, √<i><SUP>s</SUP></i>NN=8.16 TeV



Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 834 more authors) (2019) Measurement of <i>B</i><SUP>+</SUP>, <i>B</i><SUP>0</SUP> and Λ<i><sub>b</sub></i><SUP>0</SUP> production in <i>p</i>Pb collisions at, √<i><SUP>s</SUP></i>NN=8.16 TeV. PHYSICAL REVIEW D, 99 (5). 052011-.

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Abstract

The production of $B^+$, $B^0$ and $\Lambda_b^0$ hadrons is studied in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}}=8.16\,{\rm TeV}$ recorded with the LHCb detector at the LHC. The measurement uses a dataset corresponding to an integrated luminosity of $12.2\pm0.3\,\mathrm{nb}^{-1}$ for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and $18.6\pm0.5\,\mathrm{nb}^{-1}$ for the lead beam projected into the LHCb detector (corresponding to measuring hadron production at negative rapidity). Nuclear effects are probed through double-differential cross-sections, forward-to-backward cross-section ratios and nuclear modification factors of the beauty hadrons. The double-differential cross-sections are measured as a function of the beauty-hadron transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame. Forward-to-backward cross-section ratios and nuclear modification factors indicate a significant nuclear suppression at positive rapidity. The ratio of $\Lambda_b^0$ over $B^0$ production cross-sections is reported and is consistent with the corresponding measurement in $pp$~collisions.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2018-048.html
Uncontrolled Keywords: hep-ex, hep-ex, nucl-ex
Depositing User: Symplectic Admin
Date Deposited: 07 May 2019 10:26
Last Modified: 07 Oct 2023 11:23
DOI: 10.1103/PhysRevD.99.052011
Open Access URL: https://doi.org/10.1103/PhysRevD.99.052011
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3040060