Aspects of heavy quark production in polarized proton-proton collisions

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Abstract

We examine the spin-dependence of b-quark production at large pT in polarized pp collisions. The leading-order (LO) 2 → 2 subprocesses, g + g → Q + Q and q + q → Q + Q have a large 'analyzing power', with the average spin-spin asymmetry approaching -100% at large pT. Next-to-leading order (NLO) 2 → 3 processes have a large and positive asymmetry at large pT, leading to strong cancellations with the LO predictions. The results suggest that b-quark production might constitute an interesting test of the spin-dependence of NLO QCD but they also point up the need for the complete O(α3 S spin-dependent corrections for extraction of the polarized gluon distribution.

Original languageEnglish (US)
Pages (from-to)209-216
Number of pages8
JournalPhysics Letters B
Volume324
Issue number2
DOIs
StatePublished - Mar 31 1994

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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