Jet-like correlations with respect to KS0 and Λ (Λ ¯) in pp and central Pb–Pb collisions at √sNN=5.02 TeV

ALICE Collaboration

doi:10.1140/epjc/s10052-023-11614-8

Jet-like correlations with respect to KS0 and Λ (Λ ¯) in pp and central Pb–Pb collisions at √sNN=5.02 TeV

ALICE Collaboration

Physics Education

CERN
Université Clermont Auvergne
Czech Academy of Sciences
Goethe University Frankfurt
National Institute for Nuclear Physics
Variable Energy Cyclotron Centre India
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
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
Sungkyunkwan University
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore

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

3 Scopus citations

Abstract

Two-particle correlations with KS0 , Λ / Λ ¯ , and charged hadrons as trigger particles in the transverse momentum range 8 < p_{T , trig}< 16 GeV/ c , and associated charged particles within 1 < p_{T , assoc}< 8 GeV/ c , are studied at midrapidity in pp and central Pb–Pb collisions at a centre-of-mass energy per nucleon–nucleon collision sNN=5.02 TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb–Pb collisions with respect to pp collisions (I_AA) is computed. The per-trigger yield in Pb–Pb collisions on the away side is strongly suppressed to the level of I_AA≈ 0.6 for p_{T , assoc}> 3 GeV/ c as expected from strong in-medium energy loss, while an enhancement develops at low p_{T , assoc} on both the near and away sides, reaching I_AA≈ 1.8 and 2.7 respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions (π –h) and charged hadrons (h–h) in Pb–Pb collisions at sNN=2.76 TeV. Moreover, the correlations with KS0 mesons and Λ / Λ ¯ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.

Original language	English
Article number	497
Journal	European Physical Journal C
Volume	83
Issue number	6
DOIs	https://doi.org/10.1140/epjc/s10052-023-11614-8
State	Published - 2023.06

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1140/epjc/s10052-023-11614-8

Cite this

@article{d43554bbca98429ea9681e97a85e8b78,

title = "Jet-like correlations with respect to KS0 and Λ (Λ ¯) in pp and central Pb{\textendash}Pb collisions at √sNN=5.02 TeV",

abstract = "Two-particle correlations with KS0 , Λ / Λ ¯ , and charged hadrons as trigger particles in the transverse momentum range 8 < pT , trig< 16 GeV/ c , and associated charged particles within 1 < pT , assoc< 8 GeV/ c , are studied at midrapidity in pp and central Pb{\textendash}Pb collisions at a centre-of-mass energy per nucleon{\textendash}nucleon collision sNN=5.02 TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb{\textendash}Pb collisions with respect to pp collisions (IAA) is computed. The per-trigger yield in Pb{\textendash}Pb collisions on the away side is strongly suppressed to the level of IAA≈ 0.6 for pT , assoc> 3 GeV/ c as expected from strong in-medium energy loss, while an enhancement develops at low pT , assoc on both the near and away sides, reaching IAA≈ 1.8 and 2.7 respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions (π {\textendash}h) and charged hadrons (h{\textendash}h) in Pb{\textendash}Pb collisions at sNN=2.76 TeV. Moreover, the correlations with KS0 mesons and Λ / Λ ¯ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.",

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 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 N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and M. Aresti and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and J. Bae and Baek, \{Y. W.\} and X. Bai and R. Bailhache and Y. Bailung and A. Balbino and Kim, \{E. J.\}",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s).",

year = "2023",

month = jun,

doi = "10.1140/epjc/s10052-023-11614-8",

language = "English",

volume = "83",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "6",

}

TY - JOUR

T1 - Jet-like correlations with respect to KS0 and Λ (Λ ¯) in pp and central Pb–Pb collisions at √sNN=5.02 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 - 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 - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Aresti, M.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Bae, J.

AU - Baek, Y. W.

AU - Bai, X.

AU - Bailhache, R.

AU - Bailung, Y.

AU - Balbino, A.

AU - Kim, E. J.

PY - 2023/6

Y1 - 2023/6

N2 - Two-particle correlations with KS0 , Λ / Λ ¯ , and charged hadrons as trigger particles in the transverse momentum range 8 < pT , trig< 16 GeV/ c , and associated charged particles within 1 < pT , assoc< 8 GeV/ c , are studied at midrapidity in pp and central Pb–Pb collisions at a centre-of-mass energy per nucleon–nucleon collision sNN=5.02 TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb–Pb collisions with respect to pp collisions (IAA) is computed. The per-trigger yield in Pb–Pb collisions on the away side is strongly suppressed to the level of IAA≈ 0.6 for pT , assoc> 3 GeV/ c as expected from strong in-medium energy loss, while an enhancement develops at low pT , assoc on both the near and away sides, reaching IAA≈ 1.8 and 2.7 respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions (π –h) and charged hadrons (h–h) in Pb–Pb collisions at sNN=2.76 TeV. Moreover, the correlations with KS0 mesons and Λ / Λ ¯ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.

AB - Two-particle correlations with KS0 , Λ / Λ ¯ , and charged hadrons as trigger particles in the transverse momentum range 8 < pT , trig< 16 GeV/ c , and associated charged particles within 1 < pT , assoc< 8 GeV/ c , are studied at midrapidity in pp and central Pb–Pb collisions at a centre-of-mass energy per nucleon–nucleon collision sNN=5.02 TeV with the ALICE detector at the LHC. After subtracting the contributions of the flow background, the per-trigger yields are extracted on both the near and away sides, and the ratio in Pb–Pb collisions with respect to pp collisions (IAA) is computed. The per-trigger yield in Pb–Pb collisions on the away side is strongly suppressed to the level of IAA≈ 0.6 for pT , assoc> 3 GeV/ c as expected from strong in-medium energy loss, while an enhancement develops at low pT , assoc on both the near and away sides, reaching IAA≈ 1.8 and 2.7 respectively. These findings are in good agreement with previous ALICE measurements from two-particle correlations triggered by neutral pions (π –h) and charged hadrons (h–h) in Pb–Pb collisions at sNN=2.76 TeV. Moreover, the correlations with KS0 mesons and Λ / Λ ¯ baryons as trigger particles are compared to those of inclusive charged hadrons. The results are compared with the predictions of Monte Carlo models.

UR - https://www.scopus.com/pages/publications/85161820231

U2 - 10.1140/epjc/s10052-023-11614-8

DO - 10.1140/epjc/s10052-023-11614-8

M3 - Journal article

AN - SCOPUS:85161820231

SN - 1434-6044

VL - 83

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 497

ER -

Jet-like correlations with respect to KS0 and Λ (Λ ¯) in pp and central Pb–Pb collisions at √sNN=5.02 TeV

Abstract

Quacquarelli Symonds(QS) Subject Topics

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