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David Silvermyr

David Silvermyr

Professor, Deputy Head of Division

David Silvermyr

Measurements of mass-dependent azimuthal anisotropy in central p + Au, d + Au, and He 3 + Au collisions at sNN =200 GeV

Author

  • A. Adare
  • C. Aidala
  • N. N. Ajitanand
  • Y. Akiba
  • M. Alfred
  • V. Andrieux
  • N. Apadula
  • H. Asano
  • B. Azmoun
  • V. Babintsev
  • A. Bagoly
  • M. Bai
  • N. S. Bandara
  • B. Bannier
  • K. N. Barish
  • S. Bathe
  • A. Bazilevsky
  • M. Beaumier
  • S. Beckman
  • R. Belmont
  • A. Berdnikov
  • Y. Berdnikov
  • D. S. Blau
  • M. Boer
  • J. S. Bok
  • K. Boyle
  • M. L. Brooks
  • J. Bryslawskyj
  • V. Bumazhnov
  • S. Campbell
  • V. Canoa Roman
  • R. Cervantes
  • C. H. Chen
  • C. Y. Chi
  • M. Chiu
  • I. J. Choi
  • J. B. Choi
  • T. Chujo
  • Z. Citron
  • M. Connors
  • N. Cronin
  • M. Csanád
  • T. Csörgo
  • T. W. Danley
  • A. Datta
  • M. S. Daugherity
  • G. David
  • K. Deblasio
  • A. Oskarsson
  • D. Silvermyr
Show all

Summary, in English

We present measurements of the transverse-momentum dependence of elliptic flow v2 for identified pions and (anti)protons at midrapidity (|η|<0.35), in 0%-5% central p+Au and He3+Au collisions at sNN=200 GeV. When taken together with previously published measurements in d+Au collisions at sNN=200 GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass-dependent splitting of v2(pT) in d+Au and He3+Au collisions, just as in large nucleus-nucleus (A+A) collisions, and a smaller splitting in p+Au collisions. Both hydrodynamic and transport model calculations successfully describe the data at low pT (<1.5GeV/c), but fail to describe various features at higher pT. In all systems, the v2 values follow an approximate quark-number scaling as a function of the hadron transverse kinetic energy per constituent quark (KET/nq), which was also seen previously in A+A collisions.

Department/s

  • Particle and nuclear physics

Publishing year

2018

Language

English

Publication/Series

Physical Review C

Volume

97

Issue

6

Document type

Article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2469-9985