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arXiv · 1310.2230

Universal Suppression of Heavy Quarkonium Production in pA Collisions at Low Transverse Momentum

Jian-Wei Qiu·Peng Sun·Bo-Wen Xiao·Feng Yuan
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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 non-relativistic QCD (NRQCD) and the color-evaporation model (CEM). This provides an important probe to the saturation momentum at small-x in big nucleus. We also comment on the phenomenological applications of our results.

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Jian-Wei Qiu, Peng Sun, Bo-Wen Xiao, Feng Yuan. 2013-10-08. Universal Suppression of Heavy Quarkonium Production in pA Collisions at Low Transverse Momentum. https://doi.org/10.1103/physrevd.89.034007

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