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Measurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisions

Aaltonen, T. and Amerio, S. and Amidei, D. and Anastassov, A. and Annovi, A. and Nagai, Yoshikazu (2016) Measurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisions. PHYSICAL REVIEW D, 93 (11). ISSN 2470-0010

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Abstract

We report a measurement of the forward-backward asymmetry, AFB, in b¯b 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(b¯b)= (1.2 ± 0.7)% at the particle level for b-quark pairs with invariant mass, mb¯b, down to 40 GeV/c2 and measure the dependence of AFB(b¯b) on mb¯b. The results are compatible with expectations from the standard model.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 04 Oct 2023 14:41
Last Modified: 04 Oct 2023 14:41
URI: http://real.mtak.hu/id/eprint/176078

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