We report a measurement of the forward-backward asymmetry, AFB, in bb pairs produced in proton-antiproton collisions and identified by muons from semileptonic b-hadron decays. The event sample is collected at a center-of-mass energy of s=1.96 TeV with the CDF II detector and corresponds to 6.9 fb-1 of integrated luminosity. We obtain an integrated asymmetry of AFB(bb)=(1.2±0.7)% at the particle level for b-quark pairs with invariant mass, mbb, down to 40 GeV/c2 and measure the dependence of AFB(bb) on mbb. The results are compatible with expectations from the standard model.
|Digital Object Identifier (DOI):||10.1103/PhysRevD.93.112003|
|Codice identificativo ISI:||WOS:000376998900002|
|Codice identificativo Scopus:||2-s2.0-84974816761|
|Titolo:||Measurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisions|
|Appare nelle tipologie:||1.1 Articolo in rivista|