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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) , Alexander, M, Alfonso Albero, A, Alkhazov, G, Cartelle, P Alvarez, Alves Jr, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Archilli, F, Romeu, J Arnau, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barrand, GC, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battig, A, Battista, V, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belin, S, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, 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(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.