First measurement of Ωc0 production in pp collisions at s=13 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2022.137625

First measurement of Ω_c⁰ production in pp collisions at s=13 TeV

ALICE Collaboration

CERN
Université Clermont Auvergne
Variable Energy Cyclotron Centre
Czech Academy of Sciences
Goethe University Frankfurt
National Institute for Nuclear Physics
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
GSI Helmholtz Centre for Heavy Ion Research
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
University of Houston
University of Bergen
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
Nantes Université
Université Grenoble Alpes
University of Oslo
Yale University
Université Paris-Saclay
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
Pusan National University

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

18 Scopus citations

Abstract

The inclusive production of the charm–strange baryon Ω_c⁰ is measured for the first time via its hadronic decay into Ω⁻π⁺ at midrapidity (|y|<0.5) in proton–proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (p_T) differential cross section multiplied by the branching ratio is presented in the interval 2<p_T<12GeV/c. The p_T dependence of the Ω_c⁰-baryon production relative to the prompt D⁰-meson and to the prompt Ξ_c⁰-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured p_T interval, the ratio of the p_T-integrated cross sections of Ω_c⁰ and prompt Λ_c⁺ baryons multiplied by the Ω⁻π⁺ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e⁺e⁻ collisions.

Original language	English
Article number	137625
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	846
DOIs	https://doi.org/10.1016/j.physletb.2022.137625
State	Published - 10 Nov 2023
Externally published	Yes

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10.1016/j.physletb.2022.137625

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@article{93120e0fa70146ce9947c9daa4202f3e,

title = "First measurement of Ωc0 production in pp collisions at s=13 TeV",

abstract = "The inclusive production of the charm–strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton–proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2T<12GeV/c. The pT dependence of the Ωc0-baryon production relative to the prompt D0-meson and to the prompt Ξc0-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of Ωc0 and prompt Λc+ baryons multiplied by the Ω−π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and A. Adler and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and A. Akindinov and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and Y. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and A. Andronic and V. Anguelov and F. Antinori and P. Antonioli and C. Anuj and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and S. Aziz and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and X. Bai and R. Bailhache and Y. Bailung and B. Kim",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2023",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2022.137625",

language = "English",

volume = "846",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - First measurement of Ωc0 production in pp collisions at s=13 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anuj, C.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Aziz, S.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bai, X.

AU - Bailhache, R.

AU - Bailung, Y.

AU - Kim, B.

PY - 2023/11/10

Y1 - 2023/11/10

N2 - The inclusive production of the charm–strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton–proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2T<12GeV/c. The pT dependence of the Ωc0-baryon production relative to the prompt D0-meson and to the prompt Ξc0-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of Ωc0 and prompt Λc+ baryons multiplied by the Ω−π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions.

AB - The inclusive production of the charm–strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton–proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2T<12GeV/c. The pT dependence of the Ωc0-baryon production relative to the prompt D0-meson and to the prompt Ξc0-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of Ωc0 and prompt Λc+ baryons multiplied by the Ω−π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions.

UR - https://www.scopus.com/pages/publications/85172692168

U2 - 10.1016/j.physletb.2022.137625

DO - 10.1016/j.physletb.2022.137625

M3 - Article

AN - SCOPUS:85172692168

SN - 0370-2693

VL - 846

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 137625

ER -

First measurement of Ω_c⁰ production in pp collisions at s=13 TeV

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