Cross section for bb¯ production via dielectrons in d + Au collisions at √sNN = 200 GeV

6533b873fe1ef96bd12d5ad0

RESEARCH PRODUCT

Cross section for bb¯ production via dielectrons in d + Au collisions at √sNN = 200 GeV

subject

semileptonic heavy-flavor decays High Energy Physics::Phenomenology d+Au collisions at sNN=200 GeV High Energy Physics::Experiment Nuclear Experiment measurement of e+e- pairs

description

We report a measurement of e+e− pairs from semileptonic heavy-flavor decays in d + Au collisions at √sNN = 200 GeV. By exploring the mass and transverse-momentum dependence of the yield, the bottom decay contribution can be isolated from charm, and quantified by comparison to PYTHIA and MC@NLO simulations. The resulting bb¯-production cross section is σdAu bb¯ = 1.37 ± 0.28 (stat) ± 0.46 (syst) mb, which is equivalent to a nucleon-nucleon cross section of σ NN bb = 3.4 ± 0.8 (stat) ± 1.1 (syst) μb. peerReviewed

year	journal	country	edition	language
2015-01-01

http://urn.fi/URN:NBN:fi:jyu-201602011375

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