Low-mass dilepton production in $pp$ and $AA$ collisions

Details Low-mass dilepton production in $pp$ and $AA$ collisions Low-mass dilepton production in $pp$ and $AA$ collisions

2009-07-26

arxiv.org/abs/0907.4498v2

Nucl.Phys.A830:571c-574c,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee

Scientific paper

10.1016/j.nuclphysa.2009.10.051

We adopt a factorized QCD formalism to describe the transverse momentum distribution of low-mass lepton pairs produced in $pp$ collisions, when the pair transverse momentum $Q_T \gg Q$, with the pair's invariant mass $Q$ as low as $Q \sim \Lambda_{\mathrm{QCD}}$. We extend this formalism to dilepton production in $AA$ collisions by including the nuclear-dependent power correction due to parton multiple scattering.

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