Measurement of prompt D0 and D‾0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s                         NN                      =5.02TeV

The CMS collaboration

doi:10.1016/j.physletb.2021.136253

Measurement of prompt D⁰ and D‾⁰ meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s_{_NN}=5.02TeV

The CMS collaboration

Física

Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
TU Wien
Belarusian State University
University of Antwerp
Université Libre de Bruxelles
Vrije Universiteit Brussel
Ghent University
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Centro Brasileiro de Pesquisas Físicas
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Universidade Federal do ABC
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University of Sofia
Beihang University
University of Illinois at Chicago
Tsinghua University
University of Virginia
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
University of Florida
Massachusetts Institute of Technology
Peking University
University of Kansas
Sun Yat-Sen University
Fudan University
Zhejiang University
Universidad de los Andes Colombia
Universidad de Antioquia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
Institute for Theoretical and Experimental Physics
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Escuela Politecnica Nacional
Egyptian Network of High Energy Physics
British University
Fayoum University
Saha Institute of Nuclear Physics
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
Purdue University
Laboratoire Leprince-Ringuet
Institut Pluridisciplinaire Hubert Curien
Université de Haute-Alsace
Universite Claude Bernard Lyon 1
Georgian Technical University
Tbilisi State University
RWTH Aachen University
Tata Institute of Fundamental Research, Mumbai
Indian Institute of Technology Madras
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Deutsches Elektronen-Synchrotron (DESY)
University of Hamburg
Isfahan University of Technology
Brandenburg University of Technology
Karlsruhe Institute of Technology
Lomonosov Moscow State University
NCSR Demokritos
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University of Ioannina
Eötvös Loránd University
University of Debrecen
Faculty of Science
KFKI Research Institute for Particle and Nuclear Physics
Institute for Nuclear Research
Eszterhazy Karoly University
Indian Institute of Science
National Institute of Science Education and Research
Indian Institute of Technology Bhubaneswar
Institute of Physics Bhubaneswar
Panjab University
University of Nebraska-Lincoln
G.H.G. Khalsa College
Indian Institute of Science Education and Research Pune
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Rice University
Shoolini University of Biotechnology and Management Sciences
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Bhabha Atomic Research Centre
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University of Science and Technology of Mazandaran, Behshahr
University College Dublin
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Energy and Sustainable Economic Development
National Institute for Nuclear Physics
University of Catania
Centro Siciliano di Fisica Nucleare e di Struttura Della Materia
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Benemerita Universidad Autonoma de Puebla
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AGH University of Krakow
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University of Warsaw
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Petersburg Nuclear Physics Institute (PNPI)
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RAS - Institute for Nuclear Research
Imperial College London
Moscow Institute of Physics and Technology
National Research Nuclear University ‘Moscow Engineering Physics Institute’ (MEPhI)
RAS - P.N. Lebedev Physics Institute
Rutherford Appleton Laboratory
University of Southampton
California Institute of Technology
Novosibirsk State University
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National Research Tomsk Polytechnic University
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Ozyegin University
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Yozgat Bozok University
Bogazici University
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Istanbul Bilgi University
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Hacettepe University
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Institute for Scintillation Materials of National Academy of Science of Ukraine
NASU - Kharkov Institute of Physics and Technology
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Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference (Δv₂) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v₂) between D⁰ (u‾c) and D‾⁰ (uc‾) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of Δv₂. The rapidity-averaged value is found to be 〈Δv₂〉=0.001±0.001(stat)±0.003(syst) in PbPb collisions at s_{_NN}=5.02TeV. In addition, the influence of the collision geometry is explored by measuring the D⁰ and D‾⁰mesons v₂ and triangular flow coefficient (v₃) as functions of rapidity, transverse momentum (p_T), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D⁰ meson v₂ values is observed, while the v₃ is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry.

Original language	English
Article number	136253
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	816
DOIs	https://doi.org/10.1016/j.physletb.2021.136253
State	Published - 10 May 2021

Keywords

CMS
Charm
Electromagnetic fields
Heavy-flavor

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10.1016/j.physletb.2021.136253

Cite this

@article{8dac89405ab1472cb9c8652b34f241b9,

title = "Measurement of prompt D0 and D‾0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s NN =5.02TeV",

abstract = "The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference (Δv2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (u‾c) and D‾0 (uc‾) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of Δv2. The rapidity-averaged value is found to be 〈Δv2〉=0.001±0.001(stat)±0.003(syst) in PbPb collisions at s NN =5.02TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D‾0mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry.",

keywords = "CMS, Charm, Electromagnetic fields, Heavy-flavor",

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 \{Escalante Del Valle\}, A. and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and L. Lechner and D. Liko and T. Madlener and I. Mikulec and Pitters, \{F. M.\} and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and M. Zarucki and V. Chekhovsky and A. Litomin and V. Makarenko and \{Suarez Gonzalez\}, J. 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 \{Rejeb Sfar\}, H. 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'Hondt and \{De Clercq\}, J. and D. Lontkovskyi and S. Lowette and I. Marchesini and S. Moortgat and \{Carrera Jarrin\}, E.",

note = "Publisher Copyright: {\textcopyright} 2021 The Author",

year = "2021",

month = may,

day = "10",

doi = "10.1016/j.physletb.2021.136253",

language = "Ingl{\'e}s",

volume = "816",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Measurement of prompt D⁰ and D‾⁰ meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s_{_NN}=5.02TeV. / The CMS collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 816, 136253, 10.05.2021.

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

TY - JOUR

T1 - Measurement of prompt D0 and D‾0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s NN =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 - Escalante Del Valle, A.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Pitters, F. M.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Litomin, A.

AU - Makarenko, V.

AU - Suarez Gonzalez, J.

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 - Rejeb Sfar, H.

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 - Carrera Jarrin, E.

PY - 2021/5/10

Y1 - 2021/5/10

N2 - The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference (Δv2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (u‾c) and D‾0 (uc‾) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of Δv2. The rapidity-averaged value is found to be 〈Δv2〉=0.001±0.001(stat)±0.003(syst) in PbPb collisions at s NN =5.02TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D‾0mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry.

AB - The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference (Δv2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (u‾c) and D‾0 (uc‾) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of Δv2. The rapidity-averaged value is found to be 〈Δv2〉=0.001±0.001(stat)±0.003(syst) in PbPb collisions at s NN =5.02TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D‾0mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry.

KW - CMS

KW - Charm

KW - Electromagnetic fields

KW - Heavy-flavor

UR - https://www.scopus.com/pages/publications/85106117663

U2 - 10.1016/j.physletb.2021.136253

DO - 10.1016/j.physletb.2021.136253

M3 - Artículo

AN - SCOPUS:85106117663

SN - 0370-2693

VL - 816

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 - 136253

ER -

Measurement of prompt D⁰ and D‾⁰ meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at s_{_NN}=5.02TeV

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Keywords

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