Measurement of beauty-quark production in pp collisions at s = 13 TeV via non-prompt D mesons

The ALICE collaboration

doi:10.1007/JHEP10(2024)110

Measurement of beauty-quark production in pp collisions at s = 13 TeV via non-prompt D mesons

The ALICE collaboration

Sección de Física

CERN
Université Clermont Auvergne
Czech Academy of Sciences
Variable Energy Cyclotron Centre
National Institute for Nuclear Physics
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
Goethe University Frankfurt
GSI Helmholtz Centre for Heavy Ion Research
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
Sungkyunkwan University
University of Bergen
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
Lawrence Berkeley National Laboratory
Nantes Université
Université Grenoble Alpes
Universidade de São Paulo
University of Oslo
Yale University
The University of Tokyo
Kangwon National University
University of Science and Technology of China
Indian Institute of Technology Indore
University of Jammu
Université Paris-Saclay
AGH University of Krakow
Bose Institute
National and Kapodistrian University of Athens
Gauhati University
Wigner Research Centre for Physics
University of Liverpool
Lund University
Indian Institute of Technology Bombay
University of Copenhagen
Université de Strasbourg
Universidad Autonoma de Sinaloa
Institute for Space Sciences
Faculty of Nuclear Sciences and Physical Engineering
University of Texas at Austin
University of Pavia
Oak Ridge National Laboratory
Pusan National University
University of Brescia
Polytechnic University of Bari
Austrian Academy of Sciences
National Research Foundation
University of the Witwatersrand
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Pontificia Universidad Católica del Perú
National University of Science and Technology POLITEHNICA Bucharest
Université de Lyon
Warsaw University of Technology
Homi Bhabha National Institute
Universidade Estadual de Campinas
Max Planck Institute for Physics (Werner Heisenberg Institute)
Inha University
National Institute for Subatomic Physics
University of Tsukuba
University of Birmingham
University of Eastern Piedmont
Universidade Federal do ABC
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Panjab University
Comenius University
Hiroshima University
Polytechnic University of Turin
Saga University
Chicago State University
University of Kansas
Universidade Federal do Rio Grande do Sul
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Nagasaki Institute of Applied Science
Wayne State University
University of Split
Utrecht University
A. Alikhanian Yerevan Institute of Physics
Yonsei University
University of Jyväskylä
University of Bonn
Western Norway University of Applied Sciences
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Ohio State University
COMSATS University Islamabad
Technical University of Kosice
National Research and Innovation Agency Republic of Indonesia
China National Nuclear Corporation
Suranaree University of Technology
Slovak Academy of Sciences
KTO Karatay University
Yildiz Technical University
University of Zagreb
Zentrum für Technologie und Transfer (ZTT)
Jeonbuk National University
Sejong University
Sofia University
California Polytechnic State University, San Luis Obispo
National Centre for Nuclear Research
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
University of South-Eastern Norway
STFC Daresbury Laboratory
Fudan University
University of Messina
University of Foggia
University of Helsinki
Chungbuk National University
China University of Geosciences, Wuhan
Creighton University
University of Wrocław
National Nuclear Research Center
University of Tübingen
Nara Women's University
NASU - Bogolyubov Institute for Theoretical Physics
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Resumen

The p_T-differential production cross sections of non-prompt D⁰, D⁺, and D_s⁺ mesons originating from beauty-hadron decays are measured in proton–proton collisions at a centre-of-mass energy s = 13 TeV. The measurements are performed at midrapidity, |y| < 0.5, with the data sample collected by ALICE from 2016 to 2018. The results are in agreement with predictions from several perturbative QCD calculations. The fragmentation fraction of beauty quarks to strange mesons divided by the one to non-strange mesons, f_s/(f_u + f_d), is found to be 0.114 ± 0.016 (stat.) ± 0.006 (syst.) ± 0.003 (BR) ± 0.003 (extrap.). This value is compatible with previous measurements at lower centre-of-mass energies and in different collision systems in agreement with the assumption of universality of fragmentation functions. In addition, the dependence of the non-prompt D meson production on the centre-of-mass energy is investigated by comparing the results obtained at s = 5.02 and 13 TeV, showing a hardening of the non-prompt D-meson p_T-differential production cross section at higher s. Finally, the bb¯ production cross section per unit of rapidity at midrapidity is calculated from the non-prompt D⁰, D⁺, D_s⁺, and Λ_c⁺ hadron measurements, obtaining dσ/dy=75.2±3.2stat.±5.2syst._−3.2^+12.3extrap. μb.

Idioma original	Inglés
Número de artículo	110
Publicación	Journal of High Energy Physics
Volumen	2024
N.º	10
DOI	https://doi.org/10.1007/JHEP10(2024)110
Estado	Publicada - oct. 2024

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10.1007/JHEP10(2024)110

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@article{fcc01e7fda0e4a5a9123b83bad63a0e6,

title = "Measurement of beauty-quark production in pp collisions at s = 13 TeV via non-prompt D mesons",

abstract = "The pT-differential production cross sections of non-prompt D0, D+, and Ds+ mesons originating from beauty-hadron decays are measured in proton{\textendash}proton collisions at a centre-of-mass energy s = 13 TeV. The measurements are performed at midrapidity, |y| < 0.5, with the data sample collected by ALICE from 2016 to 2018. The results are in agreement with predictions from several perturbative QCD calculations. The fragmentation fraction of beauty quarks to strange mesons divided by the one to non-strange mesons, fs/(fu + fd), is found to be 0.114 ± 0.016 (stat.) ± 0.006 (syst.) ± 0.003 (BR) ± 0.003 (extrap.). This value is compatible with previous measurements at lower centre-of-mass energies and in different collision systems in agreement with the assumption of universality of fragmentation functions. In addition, the dependence of the non-prompt D meson production on the centre-of-mass energy is investigated by comparing the results obtained at s = 5.02 and 13 TeV, showing a hardening of the non-prompt D-meson pT-differential production cross section at higher s. Finally, the bb¯ production cross section per unit of rapidity at midrapidity is calculated from the non-prompt D0, D+, Ds+, and Λc+ hadron measurements, obtaining dσ/dy=75.2±3.2stat.±5.2syst.−3.2+12.3extrap. μb.",

keywords = "Hadron-Hadron Scattering, 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 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 M. Aresti and R. Arnaldi and Arneiro, \{J. G.M.C.A.\} and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and \{Bazo Alba\}, \{J. L.\} and Gago, \{A. M.\}",

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

year = "2024",

month = oct,

doi = "10.1007/JHEP10(2024)110",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "10",

}

TY - JOUR

T1 - Measurement of beauty-quark production in pp collisions at s = 13 TeV via non-prompt D mesons

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 - 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 - Aresti, M.

AU - Arnaldi, R.

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

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Bazo Alba, J. L.

AU - Gago, A. M.

PY - 2024/10

Y1 - 2024/10

N2 - The pT-differential production cross sections of non-prompt D0, D+, and Ds+ mesons originating from beauty-hadron decays are measured in proton–proton collisions at a centre-of-mass energy s = 13 TeV. The measurements are performed at midrapidity, |y| < 0.5, with the data sample collected by ALICE from 2016 to 2018. The results are in agreement with predictions from several perturbative QCD calculations. The fragmentation fraction of beauty quarks to strange mesons divided by the one to non-strange mesons, fs/(fu + fd), is found to be 0.114 ± 0.016 (stat.) ± 0.006 (syst.) ± 0.003 (BR) ± 0.003 (extrap.). This value is compatible with previous measurements at lower centre-of-mass energies and in different collision systems in agreement with the assumption of universality of fragmentation functions. In addition, the dependence of the non-prompt D meson production on the centre-of-mass energy is investigated by comparing the results obtained at s = 5.02 and 13 TeV, showing a hardening of the non-prompt D-meson pT-differential production cross section at higher s. Finally, the bb¯ production cross section per unit of rapidity at midrapidity is calculated from the non-prompt D0, D+, Ds+, and Λc+ hadron measurements, obtaining dσ/dy=75.2±3.2stat.±5.2syst.−3.2+12.3extrap. μb.

AB - The pT-differential production cross sections of non-prompt D0, D+, and Ds+ mesons originating from beauty-hadron decays are measured in proton–proton collisions at a centre-of-mass energy s = 13 TeV. The measurements are performed at midrapidity, |y| < 0.5, with the data sample collected by ALICE from 2016 to 2018. The results are in agreement with predictions from several perturbative QCD calculations. The fragmentation fraction of beauty quarks to strange mesons divided by the one to non-strange mesons, fs/(fu + fd), is found to be 0.114 ± 0.016 (stat.) ± 0.006 (syst.) ± 0.003 (BR) ± 0.003 (extrap.). This value is compatible with previous measurements at lower centre-of-mass energies and in different collision systems in agreement with the assumption of universality of fragmentation functions. In addition, the dependence of the non-prompt D meson production on the centre-of-mass energy is investigated by comparing the results obtained at s = 5.02 and 13 TeV, showing a hardening of the non-prompt D-meson pT-differential production cross section at higher s. Finally, the bb¯ production cross section per unit of rapidity at midrapidity is calculated from the non-prompt D0, D+, Ds+, and Λc+ hadron measurements, obtaining dσ/dy=75.2±3.2stat.±5.2syst.−3.2+12.3extrap. μb.

KW - Hadron-Hadron Scattering

KW - Heavy Quark Production

KW - QCD

UR - https://www.scopus.com/pages/publications/85206638689

U2 - 10.1007/JHEP10(2024)110

DO - 10.1007/JHEP10(2024)110

M3 - Article

AN - SCOPUS:85206638689

SN - 1126-6708

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 110

ER -

Measurement of beauty-quark production in pp collisions at s = 13 TeV via non-prompt D mesons

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