Production of ω mesons in pp collisions at √s=7TeV

ALICE Collaboration

doi:10.1140/epjc/s10052-020-08651-y

Production of ω mesons in pp collisions at √s=7TeV

ALICE Collaboration

Physics Education

Fudan University
Indian Institute of Technology Bombay
Indonesian Institute of Sciences
National Institute for Nuclear Physics
CERN
Variable Energy Cyclotron Centre India
Czech Academy of Sciences
Goethe University Frankfurt
Lund University
Panjab University
COMSATS University Islamabad
Enrico Fermi Center
Aligarh Muslim University
Korea Institute of Science and Technology Information
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Universidade Estadual de Campinas
Russian Research Centre Kurchatov Institute
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
NASU - Bogolyubov Institute for Theoretical Physics
University of Bergen
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Münster
Heidelberg University
Ruder Boskovic Institute
Lawrence Berkeley National Laboratory
Nantes Université
University of Oslo

Research output: Contribution to journal › Journal article › peer-review

10 Scopus citations

Abstract

The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2<pT<17GeV/c. The ω meson was reconstructed via its ω→ π⁺π^-π decay channel. The measured ω production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6GeV/c, while it overestimates the data by up to 50% for higher p_T. The ω/ π ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured p_T range and the ratio is constant with Cω/π0=0.67±0.03(stat)±0.04(sys) above a transverse momentum of 2.5GeV/c.

Original language	English
Article number	1130
Journal	European Physical Journal C
Volume	80
Issue number	12
DOIs	https://doi.org/10.1140/epjc/s10052-020-08651-y
State	Published - 2020.12

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1140/epjc/s10052-020-08651-y

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@article{771f6721579846b59205cb1ed1de4295,

title = "Production of ω mesons in pp collisions at √s=7TeV",

abstract = "The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2+π-π decay channel. The measured ω production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50\%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6GeV/c, while it overestimates the data by up to 50\% for higher pT. The ω/ π ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with Cω/π0=0.67±0.03(stat)±0.04(sys) above a transverse momentum of 2.5GeV/c.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and Aggarwal, \{M. M.\} and S. Agha and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and Z. Akbar and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} 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 A. Andronic and M. Angeletti and V. Anguelov and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and M. Arratia and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Kim, \{E. J.\}",

note = "Publisher Copyright: {\textcopyright} 2020, CERN for the benefit of the ALICE collaboration.",

year = "2020",

month = dec,

doi = "10.1140/epjc/s10052-020-08651-y",

language = "English",

volume = "80",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "12",

}

TY - JOUR

T1 - Production of ω mesons in pp collisions at √s=7TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Agha, S.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

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 - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Kim, E. J.

PY - 2020/12

Y1 - 2020/12

N2 - The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2+π-π decay channel. The measured ω production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6GeV/c, while it overestimates the data by up to 50% for higher pT. The ω/ π ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with Cω/π0=0.67±0.03(stat)±0.04(sys) above a transverse momentum of 2.5GeV/c.

AB - The invariant differential cross section of inclusive ω(782) meson production at midrapidity (| y| < 0.5) in pp collisions at s=7TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2+π-π decay channel. The measured ω production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6GeV/c, while it overestimates the data by up to 50% for higher pT. The ω/ π ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with Cω/π0=0.67±0.03(stat)±0.04(sys) above a transverse momentum of 2.5GeV/c.

UR - https://www.scopus.com/pages/publications/85097283510

U2 - 10.1140/epjc/s10052-020-08651-y

DO - 10.1140/epjc/s10052-020-08651-y

M3 - Journal article

AN - SCOPUS:85097283510

SN - 1434-6044

VL - 80

JO - European Physical Journal C

JF - European Physical Journal C

IS - 12

M1 - 1130

ER -

Production of ω mesons in pp collisions at √s=7TeV

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