Aug 12 – 18, 2012
US/Eastern timezone

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Study of $b\bar{b}$ production using correlated like-sign dimuons at PHENIX

Aug 16, 2012, 4:00 PM
Regency 1/3 and Ambassador

Regency 1/3 and Ambassador

Poster Heavy flavor and quarkonium production Poster Session Reception


Laura Patel


Production of open bottom (B) mesons is an important tool to probe the hot and dense matter created from nucleus-nucleus collisions at the Relativistic Heavy Ion Collider (RHIC). In the mass region between 4.5 and 12 GeV, the only source of correlated like-sign dimuons will come from the semileptonic decay of B meson pairs. The number of correlated like-sign dimuons due to neutral B meson oscillation is directly related to the total number of open bottom meson pairs and thus can provide a way of constraining the open bottom contribution to the dimuon continuum in the high mass region. To establish this new analysis method, correlated like-sign dimuons from pairs of B mesons of $\sim$6.3 pb$^{-1}$ data from p+p collisions at $\sqrt{s}$ = 500 GeV within the PHENIX muon arms acceptance (1.2 < |y| < 2.2) were studied. Results from this study will be presented. In the future, this analysis method can be applied to the $\sqrt{s}$ = 200 GeV p+p collisions in order to determine a baseline for d+Au and Au+Au collision systems to study the modification of heavy flavor production in a deconfined medium.

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