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Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title Obtaining the nuclear gluon distribution from heavy quark decays to lepton pairs in pA collisions Permalink
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jafari K. Kolhinen Vogt |
| Copyright Year | 2001 |
| Abstract | We have studied how lepton pairs from decays of heavyavoured mesons produced in pA collisions can be used to determine the modi cations of the gluon distribution in the nucleus. Since heavy quark production is dominated by the gg channel, the ratio of correlated lepton pair cross sections from DD and BB decays in pA and pp collisions directly re ects the ratio R g f g =f p g . We have numerically calculated the lepton pair cross sections from these decays in pp and pA collisions at SPS, RHIC and LHC energies. We nd that ratio of the pA to pp cross sections agrees quite well with the input R g : Thus, su ciently accurate measurements could be used to determine the nuclear modi cation of the gluon distribution over a greater range of x and Q than presently available, putting strong constraints on models. kari.eskola@phys.jyu. vesa.kolhinen@phys.jyu. vogt@lbl.gov |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt69w2f51r/qt69w2f51r.pdf?t=lnq236 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |