Measurement of K⁎(892)± production in inelastic pp collisions at the LHC

ALICE Collaboration

doi:10.1016/j.physletb.2022.137013

Measurement of K^⁎(892)^± production in inelastic pp collisions at the LHC

ALICE Collaboration

CERN
Variable Energy Cyclotron Centre
Czech Academy of Sciences
Goethe University Frankfurt
Lund University
National Institute for Nuclear Physics
Aligarh Muslim University
Korea Institute of Science and Technology Information
Pavol Jozef Šafárik University
Indonesian Institute of Sciences
Russian Research Centre Kurchatov Institute
GSI Helmholtz Centre for Heavy Ion Research
Fudan University
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
University of Houston
University of Bergen
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Institute for Subatomic Physics
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
Nantes Université
University of Oslo
Yale University
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
Pusan National University
Inha University

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

13 Scopus citations

Abstract

The first results on K^⁎(892)^± resonance production in inelastic pp collisions at LHC energies of s=5.02, 8, and 13 TeV are presented. The K^⁎(892)^± has been reconstructed via its hadronic decay channel K^⁎(892)→±K_S⁰+π^± with the ALICE detector. Measurements of transverse momentum distributions, p_T-integrated yields, and mean transverse momenta for charged K^⁎(892) are found to be consistent with previous ALICE measurements for neutral K^⁎(892) within uncertainties. For p_T>1 GeV/c the K^⁎(892)^± transverse momentum spectra become harder with increasing centre-of-mass energy from 5.02 to 13 TeV, similar to what previously observed for charged kaons and pions. For p_T<1 GeV/c the K^⁎(892)^± yield does not evolve significantly and the abundance of K^⁎(892)^± relative to K is rather independent of the collision energy. The transverse momentum spectra, measured for K^⁎(892)^± at midrapidity in the interval 0 < p_T<15 GeV/c, are not well described by predictions of different versions of PYTHIA 6, PYTHIA 8 and EPOS-LHC event generators. These generators reproduce the measured p_T-integrated K^⁎±/K ratios and describe well the momentum dependence for p_T<2 GeV/c.

Original language	English
Article number	137013
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	828
DOIs	https://doi.org/10.1016/j.physletb.2022.137013
State	Published - 10 May 2022
Externally published	Yes

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10.1016/j.physletb.2022.137013

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@article{3b507ae526254b54b826e4a1d11c8d60,

title = "Measurement of K⁎(892)± production in inelastic pp collisions at the LHC",

abstract = "The first results on K⁎(892)± resonance production in inelastic pp collisions at LHC energies of s=5.02, 8, and 13 TeV are presented. The K⁎(892)± has been reconstructed via its hadronic decay channel K⁎(892)→±KS0+π± with the ALICE detector. Measurements of transverse momentum distributions, pT-integrated yields, and mean transverse momenta for charged K⁎(892) are found to be consistent with previous ALICE measurements for neutral K⁎(892) within uncertainties. For pT>1 GeV/c the K⁎(892)± transverse momentum spectra become harder with increasing centre-of-mass energy from 5.02 to 13 TeV, similar to what previously observed for charged kaons and pions. For pT<1 GeV/c the K⁎(892)± yield does not evolve significantly and the abundance of K⁎(892)± relative to K is rather independent of the collision energy. The transverse momentum spectra, measured for K⁎(892)± at midrapidity in the interval 0 < pT<15 GeV/c, are not well described by predictions of different versions of PYTHIA 6, PYTHIA 8 and EPOS-LHC event generators. These generators reproduce the measured pT-integrated K⁎±/K ratios and describe well the momentum dependence for pT<2 GeV/c.",

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 A. Andronic and M. Angeletti and V. Anguelov and F. Antinori and P. Antonioli and C. Anuj and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user 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 B. Kim",

note = "Publisher Copyright: {\textcopyright} 2022 European Organization for Nuclear Research",

year = "2022",

month = may,

day = "10",

doi = "10.1016/j.physletb.2022.137013",

language = "English",

volume = "828",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Measurement of K⁎(892)± production in inelastic pp collisions at the LHC

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 - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anuj, C.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

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 - Kim, B.

PY - 2022/5/10

Y1 - 2022/5/10

N2 - The first results on K⁎(892)± resonance production in inelastic pp collisions at LHC energies of s=5.02, 8, and 13 TeV are presented. The K⁎(892)± has been reconstructed via its hadronic decay channel K⁎(892)→±KS0+π± with the ALICE detector. Measurements of transverse momentum distributions, pT-integrated yields, and mean transverse momenta for charged K⁎(892) are found to be consistent with previous ALICE measurements for neutral K⁎(892) within uncertainties. For pT>1 GeV/c the K⁎(892)± transverse momentum spectra become harder with increasing centre-of-mass energy from 5.02 to 13 TeV, similar to what previously observed for charged kaons and pions. For pT<1 GeV/c the K⁎(892)± yield does not evolve significantly and the abundance of K⁎(892)± relative to K is rather independent of the collision energy. The transverse momentum spectra, measured for K⁎(892)± at midrapidity in the interval 0 < pT<15 GeV/c, are not well described by predictions of different versions of PYTHIA 6, PYTHIA 8 and EPOS-LHC event generators. These generators reproduce the measured pT-integrated K⁎±/K ratios and describe well the momentum dependence for pT<2 GeV/c.

AB - The first results on K⁎(892)± resonance production in inelastic pp collisions at LHC energies of s=5.02, 8, and 13 TeV are presented. The K⁎(892)± has been reconstructed via its hadronic decay channel K⁎(892)→±KS0+π± with the ALICE detector. Measurements of transverse momentum distributions, pT-integrated yields, and mean transverse momenta for charged K⁎(892) are found to be consistent with previous ALICE measurements for neutral K⁎(892) within uncertainties. For pT>1 GeV/c the K⁎(892)± transverse momentum spectra become harder with increasing centre-of-mass energy from 5.02 to 13 TeV, similar to what previously observed for charged kaons and pions. For pT<1 GeV/c the K⁎(892)± yield does not evolve significantly and the abundance of K⁎(892)± relative to K is rather independent of the collision energy. The transverse momentum spectra, measured for K⁎(892)± at midrapidity in the interval 0 < pT<15 GeV/c, are not well described by predictions of different versions of PYTHIA 6, PYTHIA 8 and EPOS-LHC event generators. These generators reproduce the measured pT-integrated K⁎±/K ratios and describe well the momentum dependence for pT<2 GeV/c.

UR - https://www.scopus.com/pages/publications/85126957198

U2 - 10.1016/j.physletb.2022.137013

DO - 10.1016/j.physletb.2022.137013

M3 - Article

AN - SCOPUS:85126957198

SN - 0370-2693

VL - 828

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 - 137013

ER -

Measurement of K^⁎(892)^± production in inelastic pp collisions at the LHC

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