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Prompt and non-prompt J/[psi] production and nuclear modification at mid-rapidity in p-Pb collisions at √sNN=5.02 TeV

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A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon-nucleon centre-of-mass energy sNN−−−√=5.02sNN=5.02\sqrt{s_\text {NN}}=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J/ψJ/ψ\hbox {J}/\psi is considered, where the J/ψJ/ψ\h...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Danisch, Meike (Author) , Deisting, Alexander (Author) , Feuillard, Victor (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Köhler, Markus Konrad (Author) , Klewin, Sebastian (Author) , Leardini, Lucia (Author) , Mercado Pérez, Jorge (Author) , Ohlson, Alice (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Weiser, Dennis (Author) , Windelband, Bernd (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 8 June 2018
In: The European physical journal. C, Particles and fields
Year: 2018, Volume: 78, Issue: 6
ISSN:1434-6052
DOI:10.1140/epjc/s10052-018-5881-2
Online Access:Verlag, Volltext: https://doi.org/10.1140/epjc/s10052-018-5881-2
Verlag, Volltext: https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-018-5881-2.pdf
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Author Notes:ALICE Collaboration*
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Summary:A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon-nucleon centre-of-mass energy sNN−−−√=5.02sNN=5.02\sqrt{s_\text {NN}}=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J/ψJ/ψ\hbox {J}/\psi is considered, where the J/ψJ/ψ\hbox {J}/\psi mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The bb¯bb¯\hbox {b}\bar{\hbox {b}} production cross section at mid-rapidity, dσbb¯/dydσbb¯/dy\hbox {d}\sigma _{\hbox {b}\bar{\hbox {b}}}/\hbox {d}y, and the total cross section extrapolated over full phase space, σbb¯σbb¯\sigma _{\text {b}\bar{\text {b}}}, are obtained. This measurement is combined with results on inclusive J/ψJ/ψ\hbox {J}/\psi production to determine the prompt J/ψJ/ψ\hbox {J}/\psi cross sections. The results in p-Pb collisions are then scaled to expectations from pp collisions at the same centre-of-mass energy to derive the nuclear modification factor RpPbRpPbR_{\text {pPb}}, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. RpPbRpPbR_{\text {pPb}} is found to be smaller than unity at low pTpTp_{\mathrm{T}} for both J/ψJ/ψ\hbox {J}/\psi coming from beauty hadron decays and prompt J/ψJ/ψ\hbox {J}/\psi .
Item Description:Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, V. Feuillard, P. Glässel, J. Kim, M.K. Köhler, S. Klewin, L. Leardini, J. Mercado Pérez, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und weitere]
Gesehen am 21.06.2019
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-018-5881-2

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