Measurement of the production cross section of prompt Ξc0 baryons at midrapidity in pp collisions at √s = 5.02 TeV

ALICE Collaboration

doi:10.1007/JHEP10(2021)159

Measurement of the production cross section of prompt Ξ_c⁰ baryons at midrapidity in pp collisions at √s = 5.02 TeV

ALICE Collaboration

CERN
Variable Energy Cyclotron Centre
Czech Academy of Sciences
Lund University
National Institute for Nuclear Physics
Korea Institute of Science and Technology Information
P. J. Safarik University
Lembaga Ilmu Pengetahuan Indonesia
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Fudan University
Russian Research Centre Kurchatov Institute
Central China Normal University
Universidad Nacional Autónoma de México
Aligarh Muslim University
COMSATS University Islamabad
University of Houston
University of Bergen
Goethe University Frankfurt
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Institute for Subatomic Physics

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

Abstract

The transverse momentum (p_T) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e⁺Ξ⁻ν_e in pp collisions at √s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the p_T-differential Ξc0-baryon and D⁰-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The p_T-integrated cross section of prompt Ξc0-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξc0/D⁰ = 0.20 ± 0.04 (stat.)−0.07+0.08 (syst.). These results provide an additional indication of a modification of the charm fragmentation from e⁺e⁻ and e⁻p collisions to pp collisions.

Original language	English
Article number	159
Pages (from-to)	1-31
Journal	Journal of High Energy Physics
Volume	2021
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2021)159
Publication status	Published - 19 Oct 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s).

Keywords

Heavy Ion Experiments

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Cite this

@article{449f865942244af3985b036bc08f06b1,

title = "Measurement of the production cross section of prompt Ξc0 baryons at midrapidity in pp collisions at √s = 5.02 TeV",

abstract = "The transverse momentum (pT) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e+Ξ−νe in pp collisions at √s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the pT-differential Ξc0-baryon and D0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt Ξc0-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξc0/D0 = 0.20 ± 0.04 (stat.)−0.07+0.08 (syst.). These results provide an additional indication of a modification of the charm fragmentation from e+e− and e−p collisions to pp collisions. ",

keywords = "Heavy Ion Experiments",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and Z. Akbar and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} 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 T. Alt and L. Altenkamper and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and D. Andreou and P. Christakoglou and A. Grelli and B. Hofman and B. Hohlweger and S. Jaelani and Keijdener, \{D. L.D.\} and S. Kim and Kuijer, \{P. G.\} and Mohanty, \{A. P.\} and T. Peitzmann and S. Qiu and S. Roy and Snellings, \{R. J.M.\} and \{van der Kolk\}, N. and \{van Doremalen\}, \{L. V.R.\} and \{van Leeuwen\}, M. and L. Vermunt and M. Verweij and H. Yokoyama and \{Correia Zanoli\}, Henrique and \{van Weelden\}, Gijs",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = oct,

day = "19",

doi = "10.1007/JHEP10(2021)159",

language = "English",

volume = "2021",

pages = "1--31",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

}

TY - JOUR

T1 - Measurement of the production cross section of prompt Ξc0 baryons at midrapidity in pp collisions at √s = 5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

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 - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Christakoglou, P.

AU - Grelli, A.

AU - Hofman, B.

AU - Hohlweger, B.

AU - Jaelani, S.

AU - Keijdener, D. L.D.

AU - Kim, S.

AU - Kuijer, P. G.

AU - Mohanty, A. P.

AU - Peitzmann, T.

AU - Qiu, S.

AU - Roy, S.

AU - Snellings, R. J.M.

AU - van der Kolk, N.

AU - van Doremalen, L. V.R.

AU - van Leeuwen, M.

AU - Vermunt, L.

AU - Verweij, M.

AU - Yokoyama, H.

AU - Correia Zanoli, Henrique

AU - van Weelden, Gijs

PY - 2021/10/19

Y1 - 2021/10/19

N2 - The transverse momentum (pT) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e+Ξ−νe in pp collisions at √s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the pT-differential Ξc0-baryon and D0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt Ξc0-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξc0/D0 = 0.20 ± 0.04 (stat.)−0.07+0.08 (syst.). These results provide an additional indication of a modification of the charm fragmentation from e+e− and e−p collisions to pp collisions.

AB - The transverse momentum (pT) differential cross section of the charm-strange baryon Ξc0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e+Ξ−νe in pp collisions at √s = 5.02 TeV with the ALICE detector at the LHC. The ratio of the pT-differential Ξc0-baryon and D0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt Ξc0-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξc0/D0 = 0.20 ± 0.04 (stat.)−0.07+0.08 (syst.). These results provide an additional indication of a modification of the charm fragmentation from e+e− and e−p collisions to pp collisions.

KW - Heavy Ion Experiments

UR - https://www.scopus.com/pages/publications/85118178787

U2 - 10.1007/JHEP10(2021)159

DO - 10.1007/JHEP10(2021)159

M3 - Article

AN - SCOPUS:85118178787

SN - 1126-6708

VL - 2021

SP - 1

EP - 31

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 159

ER -