Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV

S. Acharya; F Acosta; D. Adamova; J Adolfsson; MM. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; S.U. Ahn; S. Aiola; A. Akindinov; M. Al-Turany; SN Alam; DSD Albuquerque; D. Aleksandrov; B Alessandro; Rafael A. Molina; Yusuf Ali; A. Alici; Ian Bearden; Ozelin De Lima Pimentel Lais; Christian Alexander Bourjau; Marek Chojnacki; Jens Jørgen Gaardhøje; Freja Thoresen; Børge Svane Nielsen; bsm989 bsm989; You Zhou; Katarina Gajdosova; rtc312 rtc312

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

Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV

S. Acharya, F Acosta, D. Adamova, J Adolfsson, MM. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, S.U. Ahn, S. Aiola, A. Akindinov, M. Al-Turany, SN Alam, DSD Albuquerque, D. Aleksandrov, B Alessandro, Rafael A. Molina, Yusuf Ali, A. AliciIan Bearden, Ozelin De Lima Pimentel Lais, Christian Alexander Bourjau, Marek Chojnacki, Jens Jørgen Gaardhøje, Freja Thoresen, Børge Svane Nielsen, bsm989 bsm989, You Zhou, Katarina Gajdosova, rtc312 rtc312

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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.

Originalsprog	Engelsk
Artikelnummer	466
Tidsskrift	European Physical Journal C
Vol/bind	78
Udgave nummer	6
Antal sider	17
ISSN	1434-6044
DOI	https://doi.org/10.1140/epjc/s10052-018-5881-2
Status	Udgivet - 1 jun. 2018

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10.1140/epjc/s10052-018-5881-2Licens: CC BY

Acharya2018_Article_PromptAndNon-promptHboxJPsiJΨPForlagets udgivne version, 1,79 MBLicens: CC BY

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Acharya, S., Acosta, F., Adamova, D., Adolfsson, J., Aggarwal, MM., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S. U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, SN., Albuquerque, DSD., Aleksandrov, D., Alessandro, B., Molina, R. A., Ali, Y., ... rtc312, R. (2018). Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV. European Physical Journal C, 78(6), [466]. https://doi.org/10.1140/epjc/s10052-018-5881-2

Acharya, S, Acosta, F, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Aiola, S, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Molina, RA, Ali, Y, Alici, A, Bearden, I, Lais, ODLP, Bourjau, CA, Chojnacki, M, Gaardhøje, JJ, Thoresen, F, Nielsen, BS , bsm989, B , Zhou, Y, Gajdosova, K & rtc312, R 2018, 'Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV', European Physical Journal C, bind 78, nr. 6, 466. https://doi.org/10.1140/epjc/s10052-018-5881-2

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title = "Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=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 = "S. Acharya and F Acosta and D. Adamova and J Adolfsson and MM. Aggarwal and G.A. Rinella and Maria Agnello and N. Agrawal and Z. Ahammed and S.U. Ahn and S. Aiola and A. Akindinov and M. Al-Turany and SN Alam and DSD Albuquerque and D. Aleksandrov and B Alessandro and Molina, {Rafael A.} and Yusuf Ali and A. Alici and Ian Bearden and Lais, {Ozelin De Lima Pimentel} and Bourjau, {Christian Alexander} and Marek Chojnacki and Gaardh{\o}je, {Jens J{\o}rgen} and Freja Thoresen and Nielsen, {B{\o}rge Svane} and bsm989 bsm989 and You Zhou and Katarina Gajdosova and rtc312 rtc312",

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T1 - Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV

AU - Acharya, S.

AU - Acosta, F

AU - Adamova, D.

AU - Adolfsson, J

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S.U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, SN

AU - Albuquerque, DSD

AU - Aleksandrov, D.

AU - Alessandro, B

AU - Molina, Rafael A.

AU - Ali, Yusuf

AU - Alici, A.

AU - Bearden, Ian

AU - Lais, Ozelin De Lima Pimentel

AU - Bourjau, Christian Alexander

AU - Chojnacki, Marek

AU - Gaardhøje, Jens Jørgen

AU - Thoresen, Freja

AU - Nielsen, Børge Svane

AU - bsm989, bsm989

AU - Zhou, You

AU - Gajdosova, Katarina

AU - rtc312, rtc312

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.

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

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

M3 - Journal article

SN - 1434-6044

VL - 78

JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

IS - 6

M1 - 466

ER -

Prompt and non-prompt J/psi production and nuclear modification at mid-rapidity in p-Pb collisions at root s(NN)=5.02 TeV

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