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

ALICE Collaboration

doi:10.1140/epjc/s10052-018-5881-2

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

ALICE Collaboration

Physics Education

CERN
Variable Energy Cyclotron Centre India
University of California at Berkeley
Czech Academy of Sciences
Lund University
Panjab University
Polytechnic University of Turin
Indian Institute of Technology Bombay
Korea Institute of Science and Technology Information
Yale University
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Universidade Estadual de Campinas
Russian Research Centre Kurchatov Institute
National Institute for Nuclear Physics
Universidad Nacional Autónoma de México
COMSATS University Islamabad
Enrico Fermi Center
NASU - Bogolyubov Institute for Theoretical Physics
University of Bergen
Goethe University Frankfurt
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Birmingham
Heidelberg University
Creighton University
Ruder Boskovic Institute
Lawrence Berkeley National Laboratory
Nantes Université
Technical University of Munich
Technische Universität München
University of Oslo
Aligarh Muslim University
Inha University
Konkuk University

Research output: Contribution to journal › Journal article › peer-review

32 Scopus citations

Abstract

A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J / ψ is considered, where the J / ψ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The b b ¯ production cross section at mid-rapidity, d σ_b_{b ¯}/ d y, and the total cross section extrapolated over full phase space, σ_b_{b ¯}, are obtained. This measurement is combined with results on inclusive J / ψ production to determine the prompt J / ψ 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 R_pPb, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. R_pPb is found to be smaller than unity at low p_T for both J / ψ coming from beauty hadron decays and prompt J / ψ.

Original language	English
Article number	466
Journal	European Physical Journal C
Volume	78
Issue number	6
DOIs	https://doi.org/10.1140/epjc/s10052-018-5881-2
State	Published - 2018.06.1

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1140/epjc/s10052-018-5881-2

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@article{daa4e572072c45ef85f0a0cc9d87bf02,

title = "Prompt and non-prompt J / ψ production and nuclear modification at mid-rapidity in p–Pb collisions at √sNN=5.02 TeV",

abstract = "A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J / ψ is considered, where the J / ψ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The b b ¯ production cross section at mid-rapidity, d σbb ¯/ d y, and the total cross section extrapolated over full phase space, σbb ¯, are obtained. This measurement is combined with results on inclusive J / ψ production to determine the prompt J / ψ 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 RpPb, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. RpPb is found to be smaller than unity at low pT for both J / ψ coming from beauty hadron decays and prompt J / ψ.",

author = "\{ALICE Collaboration\} and S. Acharya and Acosta, \{F. T.\} and D. Adamov{\'a} and J. Adolfsson and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and \{Alfaro Molina\}, R. and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and C. Andrei and D. Andreou and Andrews, \{H. A.\} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, \{O. W.\} and Arsene, \{I. C.\} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and Kim, \{E. J.\}",

note = "Publisher Copyright: {\textcopyright} 2018, CERN for the benefit of the ALICE collaboration.",

year = "2018",

month = jun,

day = "1",

doi = "10.1140/epjc/s10052-018-5881-2",

language = "English",

volume = "78",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "6",

}

TY - JOUR

T1 - Prompt and non-prompt J / ψ production and nuclear modification at mid-rapidity in p–Pb collisions at √sNN=5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Acosta, F. T.

AU - Adamová, D.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Kim, E. J.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J / ψ is considered, where the J / ψ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The b b ¯ production cross section at mid-rapidity, d σbb ¯/ d y, and the total cross section extrapolated over full phase space, σbb ¯, are obtained. This measurement is combined with results on inclusive J / ψ production to determine the prompt J / ψ 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 RpPb, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. RpPb is found to be smaller than unity at low pT for both J / ψ coming from beauty hadron decays and prompt J / ψ.

AB - A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J / ψ is considered, where the J / ψ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The b b ¯ production cross section at mid-rapidity, d σbb ¯/ d y, and the total cross section extrapolated over full phase space, σbb ¯, are obtained. This measurement is combined with results on inclusive J / ψ production to determine the prompt J / ψ 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 RpPb, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. RpPb is found to be smaller than unity at low pT for both J / ψ coming from beauty hadron decays and prompt J / ψ.

UR - https://www.scopus.com/pages/publications/85048276847

U2 - 10.1140/epjc/s10052-018-5881-2

DO - 10.1140/epjc/s10052-018-5881-2

M3 - Journal article

AN - SCOPUS:85048276847

SN - 1434-6044

VL - 78

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 466

ER -

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

Abstract

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