Measurement of the azimuthal anisotropy of ϒ(1S) and ϒ(2S) mesons in PbPb collisions at √ sNN =5.02TeV

The CMS collaboration

doi:10.1016/j.physletb.2021.136385

Measurement of the azimuthal anisotropy of ϒ(1S) and ϒ(2S) mesons in PbPb collisions at √ sNN =5.02TeV

The CMS collaboration

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

Abstract

The second-order Fourier coefficients (v₂) characterizing the azimuthal distributions of ϒ(1S) and ϒ(2S) mesons produced in PbPb collisions at √sNN=5.02TeV are studied. Theϒ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb⁻¹. The scalar product method is used to extract the v₂ coefficients of the azimuthal distributions. Results are reported for the rapidity range |y|<2.4, in the transverse momentum interval 0<p_T<50GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured v₂ values for the ϒ mesons are found to be consistent with zero.

Original language	English
Article number	136385
Pages (from-to)	1-23
Number of pages	23
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	819
DOIs	https://doi.org/10.1016/j.physletb.2021.136385
Publication status	Published - 10 Aug 2021
Externally published	Yes

Keywords

5.02 TeV
CMS
Flow
Heavy ion
PbPb
Upsilon

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@article{f2b1c0b07b4548648ea0b77bbadbf038,

title = "Measurement of the azimuthal anisotropy of ϒ(1S) and ϒ(2S) mesons in PbPb collisions at √ sNN =5.02TeV",

abstract = "The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of ϒ(1S) and ϒ(2S) mesons produced in PbPb collisions at √sNN=5.02TeV are studied. Theϒ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb−1. The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range |y|<2.4, in the transverse momentum interval 0T<50GeV/c, and in three centrality ranges of 10{\textendash}30\%, 30{\textendash}50\% and 50{\textendash}90\%. In contrast to the J/ψ mesons, the measured v2 values for the ϒ mesons are found to be consistent with zero.",

keywords = "5.02 TeV, CMS, Flow, Heavy ion, PbPb, Upsilon",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and M. Dragicevic and J. Er{\"o} and \{Del Valle\}, \{A. Escalante\} and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and W. Waltenberger and Wulz, \{C. E.\} and M. Zarucki and V. Drugakov and V. Mossolov and Gonzalez, \{J. Suarez\} and Darwish, \{M. R.\} and \{De Wolf\}, \{E. A.\} and \{Di Croce\}, D. and X. Janssen and T. Kello and A. Lelek and M. Pieters and Sfar, \{H. Rejeb\} and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Putte\}, S. and \{Van Remortel\}, N. and F. Blekman and Bols, \{E. S.\} and Chhibra, \{S. S.\} and J. D{\textquoteright}Hondt and \{De Clercq\}, J. and D. Lontkovskyi and S. Lowette and I. Marchesini and S. Moortgat and Q. Python and S. Tavernier and G. Falmagne",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).",

year = "2021",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2021.136385",

language = "English",

volume = "819",

pages = "1--23",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Measurement of the azimuthal anisotropy of ϒ(1S) and ϒ(2S) mesons in PbPb collisions at √ sNN =5.02TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Del Valle, A. Escalante

AU - Flechl, M.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Drugakov, V.

AU - Mossolov, V.

AU - Gonzalez, J. Suarez

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Kello, T.

AU - Lelek, A.

AU - Pieters, M.

AU - Sfar, H. Rejeb

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Chhibra, S. S.

AU - D’Hondt, J.

AU - De Clercq, J.

AU - Lontkovskyi, D.

AU - Lowette, S.

AU - Marchesini, I.

AU - Moortgat, S.

AU - Python, Q.

AU - Tavernier, S.

AU - Falmagne, G.

PY - 2021/8/10

Y1 - 2021/8/10

N2 - The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of ϒ(1S) and ϒ(2S) mesons produced in PbPb collisions at √sNN=5.02TeV are studied. Theϒ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb−1. The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range |y|<2.4, in the transverse momentum interval 0T<50GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured v2 values for the ϒ mesons are found to be consistent with zero.

AB - The second-order Fourier coefficients (v2) characterizing the azimuthal distributions of ϒ(1S) and ϒ(2S) mesons produced in PbPb collisions at √sNN=5.02TeV are studied. Theϒ mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7nb−1. The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range |y|<2.4, in the transverse momentum interval 0T<50GeV/c, and in three centrality ranges of 10–30%, 30–50% and 50–90%. In contrast to the J/ψ mesons, the measured v2 values for the ϒ mesons are found to be consistent with zero.

KW - 5.02 TeV

KW - CMS

KW - Flow

KW - Heavy ion

KW - PbPb

KW - Upsilon

UR - https://www.scopus.com/pages/publications/105026920846

U2 - 10.1016/j.physletb.2021.136385

DO - 10.1016/j.physletb.2021.136385

M3 - Article

AN - SCOPUS:105026920846

SN - 0370-2693

VL - 819

SP - 1

EP - 23

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 - 136385

ER -

Measurement of the azimuthal anisotropy of ϒ(1S) and ϒ(2S) mesons in PbPb collisions at √ sNN =5.02TeV

Abstract

Keywords

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