A new correlation method to identify and separate charm and bottom production processes at RHIC

Abstract

Electrons from semileptonic decays of heavy-flavor mesons (D and B) allow to study the energy loss of heavy-quarks in nuclear collisions at sqrt(s) = 200 GeV at RHIC. Since pQCD calculations have shown that the crossing point where bottom decay electrons start to dominate over charm decay electrons is largely unknown, an urgent need arises to access the relative contributions independently. A correlation method is proposed to identify and separate charm and bottom production processes on a statistical basis through tagging of their decay electrons and open charmed mesons. The feasibility for this method is demonstrated using PYTHIA and MC@NLO simulations. The latter allows to estimate the complete NLO contributions, including e.g. gluon-splitting diagrams.

Corrected last typos

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Cited by in corpus (14)

• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• Open charm production at the LHC - $k_t$-factorization approach
• Heavy-flavor production and medium properties in high-energy nuclear collisions - What next?
• Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s}$=200 GeV
• Anomalous mass dependence of radiative quark energy loss in a finite-size quark-gluon plasma
• Heavy Flavor Azimuthal Correlations in Cold Nuclear Matter
• Nonphotonic electrons at RHIC within $k_t$-factorization approach and with experimental semileptonic decay functions
• Open charm meson production at BNL RHIC within $k_t$-factorization approach and revision of their semileptonic decays
• Kinematical correlations of dielectrons from semileptonic decays of heavy mesons and Drell-Yan processes at BNL RHIC
• $b\bar{b}$ Kinematic Correlations in Cold Nuclear Matter
• Non-photonic electron-hadron azimuthal correlation for AuAu, CuCu and pp collisions at $\sqrt{s_{NN}}=200$ GeV
• Production of D and B mesons and their semileptonic decays
• Yield and suppression of electrons from open heavy-flavor decays in heavy-ion collisions
• Jet-like correlations of heavy-flavor particles - from RHIC to LHC