Measurement of charm and bottom production from semileptonic hadron decays in p + p collisions at √s = 200 GeV
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Measurements of the differential production of electrons from open-heavy-flavor hadrons with charm- and bottom-quark content in p+p collisions at √s=200 GeV are presented. The measurements proceed through displaced-vertex analyses of electron tracks from the semileptonic decay of charm and bottom hadrons using the PHENIX silicon-vertex detector. The relative contribution of electrons from bottom decays to inclusive heavy-flavor-electron production is found to be consistent with fixed-order-plus-next-to-leading-log perturbative-QCD calculations within experimental and theoretical uncertainties. These new measurements in p+p collisions provide a precision baseline for comparable forthcoming measurements in A+A collisions.
This article is published as Aidala, C., Y. Akiba, M. Alfred, V. Andrieux, N. Apadula, H. Asano, B. Azmoun et al. "Measurement of charm and bottom production from semileptonic hadron decays in p+ p collisions at s= 200 GeV." Physical Review D 99, no. 9 (2019): 092003. DOI: 10.1103/PhysRevD.99.092003. Posted with permission.