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Universal suppression of heavy quarkonium production in pA collisions at low transverse momentum

Jian-Wei Qiu1, Peng Sun2, Bo-Wen Xiao3, and Feng Yuan2

  • 1Physics Department, Building 510A, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 2Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 3Institute of Particle Physics, Central China Normal University, Wuhan 430079, China

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Phys. Rev. D 89, 034007 – Published 5 February, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.034007

Abstract

The nuclear suppression of heavy quarkonium production at low transverse momentum in pA collisions in high energy scatterings is investigated in the small-x factorization formalism. A universal suppression is found in the large Nc limit between the two formalisms to describe the heavy quarkonium production: the nonrelativistic QCD and the color-evaporation model. This provides an important probe to the saturation momentum at small x in the big nucleus. We also comment on the phenomenological applications of our results.

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Phys. Rev. D 89, 034007– Published 5 February, 2014
  • Received 22 October 2013

© 2014 American Physical Society

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