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

Jian-Wei Qiu (Iowa State U.); Werner Vogelsang (BNL); Zhong-Bo Kang (Iowa State U.)

arxiv: 0907.4498 · v2 · submitted 2009-07-26 · ✦ hep-ph

Low-mass dilepton production in pp and AA collisions

Zhong-Bo Kang (Iowa State U.) , Jian-Wei Qiu (Iowa State U.) , Werner Vogelsang (BNL) This is my paper

classification ✦ hep-ph

keywords collisionsdileptonformalismlow-massmomentumpairproductiontransverse

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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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Low-mass dilepton production in pp and AA collisions

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