Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at sNN = 5.02 TeV

The ALICE collaboration

doi:10.1007/JHEP11(2024)148

Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at sNN = 5.02 TeV

The ALICE collaboration

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

European Organization for Nuclear Research
LAIC, Université d'Auvergne
Nuclear Physics Institute of the Cas
VECC Kolkata
INFN Sez. di Torino
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
Aligarh Muslim University
Korea Institute of Science and Technology Information
P. J. Safarik University
Frankfurt Institute for Advanced Studies
GSI Helmholtz Center
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
Sungkyunkwan University
University of Bergen
Sezione INFN di Cagliari
Johann Wolfgang Goethe University
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Technical University of Munich
Benemerita Universidad Autonoma de Puebla
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Derby
University of Münster
Heidelberg University
Dipartimento di Fisica 'G. Galilei' and INFN
Lawrence Berkeley National Laboratory
l'institut du thorax
University of Grenoble Alpes
University of São Paulo
University of Oslo
Yale University
University of Tokyo
Laboratori Nazionali Del Sud
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
University of Jammu
University Paris-Sud
Univ of Mining and Metallurgy
Bose Institute
University of Athens
Gauhati University
Wigner Research Centre for Physics
University of Liverpool
Lund University
The Indian Institute of Technology Bombay
Pontifical Catholic University of Peru San Miguel
Niels Bohr Institutet
Institut Pluridisciplinaire Hubert Curien
Universidad Autonoma de Sinaloa
Institute of Space Sciences
Czech Technical University in Prague
University of Texas at Austin
University of Pavia
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
Oak Ridge National Laboratory
Pusan National University
University of Brescia
Politecnico di Bari
Sofia University
STFC Daresbury Laboratory
Stefan Meyer Institut für Subatomare Physik (SMI)
National Research Foundation
University of the Witwatersrand, Johannesburg
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Sezione INFN di Roma La Sapienza
INFN- Sezione di Trieste
University Politehnica of Bucharest
University of Lyon
Warsaw Institute of Technology
Homi Bhabha National Institute
Fudan University
University of Campinas
Max-Planck-Institut für Physik
Inha University
Science Park 105
Tsukuba University
Energy and Sustainable Economic Development (ENEA)
University of Birmingham
University of Eastern Piedmont
UFABC
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Comenius University
Hiroshima University
INFN, Laboratori Nazionali Di Frascati
Politecnico di Torino
Saga University
Chicago State University
University of Kansas
UFRGS
University of Tennessee
Nagasaki Institute of Applied Science
Wayne State University
University of Split
the University of Utrecht
A.I. Alikhanyan National Science Laboratory (YerPhi)
Yonsei University
University of Jyväskylä
University of Bonn
Western Norway University of Applied Sciences
CINVESTAV
Ohio State University
Technical University of Košice
BRIN
China Institute of Atomic Energy
Instituto de Ciencias Nucleares de la UNAM
Suranaree University of Technology
Institute of Experimental Physics Slovak Academy of Sciences
KTO Karatay University
Yildiz Technical University
University of Zagreb
Zentrum für Technologie und Transfer (ZTT)
Chonbuk National University
Sejong University
California Polytechnic State University, San Luis Obispo
Panjab University
National Center for Nuclear Research (NCBJ)
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
University of South-Eastern Norway
Multimedia and Distributed Systems Laboratory
University of Foggia
University of Helsinki and Helsinki Institute of Physics
Chungbuk National University
China University of Geosciences
Creighton University
Wrocław University
National Nuclear Research Center
University of Tübingen
Nara Women's University
Bogolyubov Institute for Theoretical Physics Nasu
Institute of Physics of the Czech Academy of Sciences

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The production cross sections of D⁰, D⁺, and Λc+ hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of sNN = 5.02 TeV. Nuclear modification factors (R_pPb) of non-prompt D⁰, D⁺, and Λc+ are calculated as a function of the transverse momentum (p_T) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The R_pPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant p_T dependence. The p_T-integrated cross sections and p_T-integrated R_pPb of non-prompt D⁰ and D⁺ mesons are also computed by extrapolating the visible cross sections down to p_T = 0. The non-prompt D-meson R_pPb integrated over p_T is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt Λc+/D⁰ and D⁺/D⁰ production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of p_T display a similar trend to that measured for charm hadrons in the same collision system.

Original language	English
Article number	148
Journal	Journal of High Energy Physics
Volume	2024
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2024)148
State	Published - Nov 2024

Keywords

Heavy Ion Experiments
Heavy Quark Production
QCD

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10.1007/JHEP11(2024)148

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@article{5174357881b54dc483cf03195c9ea521,

title = "Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at sNN = 5.02 TeV",

abstract = "The production cross sections of D0, D+, and Λc+ hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of sNN = 5.02 TeV. Nuclear modification factors (RpPb) of non-prompt D0, D+, and Λc+ are calculated as a function of the transverse momentum (pT) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The RpPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant pT dependence. The pT-integrated cross sections and pT-integrated RpPb of non-prompt D0 and D+ mesons are also computed by extrapolating the visible cross sections down to pT = 0. The non-prompt D-meson RpPb integrated over pT is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt Λc+/D0 and D+/D0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of pT display a similar trend to that measured for charm hadrons in the same collision system.",

keywords = "Heavy Ion Experiments, Heavy Quark Production, QCD",

author = "\{The ALICE collaboration\} and S. Acharya and D. Adamov{\'a} and A. Agarwal and \{Aglieri Rinella\}, G. and L. Aglietta and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and A. Akindinov and V. Akishina and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and Altamura, \{A. R.\} and I. Altsybeev and Alvarado, \{J. R.\} and Alvarez, \{C. O.R.\} and Anaam, \{M. N.\} and C. Andrei and N. Andreou and A. Andronic and E. Andronov and V. Anguelov and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and R. Arnaldi and Arneiro, \{J. G.M.C.A.\} and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and D. Averyanov and L. Fabbietti",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = nov,

doi = "10.1007/JHEP11(2024)148",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "11",

}

TY - JOUR

T1 - Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at sNN = 5.02 TeV

AU - The ALICE collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Agarwal, A.

AU - Aglieri Rinella, G.

AU - Aglietta, L.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

AU - Akishina, V.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altamura, A. R.

AU - Altsybeev, I.

AU - Alvarado, J. R.

AU - Alvarez, C. O.R.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, N.

AU - Andronic, A.

AU - Andronov, E.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arneiro, J. G.M.C.A.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Averyanov, D.

AU - Fabbietti, L.

PY - 2024/11

Y1 - 2024/11

N2 - The production cross sections of D0, D+, and Λc+ hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of sNN = 5.02 TeV. Nuclear modification factors (RpPb) of non-prompt D0, D+, and Λc+ are calculated as a function of the transverse momentum (pT) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The RpPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant pT dependence. The pT-integrated cross sections and pT-integrated RpPb of non-prompt D0 and D+ mesons are also computed by extrapolating the visible cross sections down to pT = 0. The non-prompt D-meson RpPb integrated over pT is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt Λc+/D0 and D+/D0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of pT display a similar trend to that measured for charm hadrons in the same collision system.

AB - The production cross sections of D0, D+, and Λc+ hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in proton–lead (p–Pb) collisions at the center-of-mass energy per nucleon pair of sNN = 5.02 TeV. Nuclear modification factors (RpPb) of non-prompt D0, D+, and Λc+ are calculated as a function of the transverse momentum (pT) to investigate the modification of the momentum spectra measured in p–Pb collisions with respect to those measured in proton–proton (pp) collisions at the same energy. The RpPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant pT dependence. The pT-integrated cross sections and pT-integrated RpPb of non-prompt D0 and D+ mesons are also computed by extrapolating the visible cross sections down to pT = 0. The non-prompt D-meson RpPb integrated over pT is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt Λc+/D0 and D+/D0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of pT display a similar trend to that measured for charm hadrons in the same collision system.

KW - Heavy Ion Experiments

KW - Heavy Quark Production

KW - QCD

UR - https://www.scopus.com/pages/publications/105003039770

U2 - 10.1007/JHEP11(2024)148

DO - 10.1007/JHEP11(2024)148

M3 - Article

AN - SCOPUS:105003039770

SN - 1126-6708

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 148

ER -

Measurement of beauty production via non-prompt charm hadrons in p–Pb collisions at sNN = 5.02 TeV

Abstract

Keywords

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