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Título:	Measurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisions
Autor:	Aaltonen, T.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vilar Cortabitarte, R. CSIC ORCID; Vizán, J. CSIC ORCID; CDF Collaboration
Fecha de publicación:	2016
Editor:	American Physical Society
Citación:	Physical Review D 93(11): 112003 (2016)
Resumen:	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.
Descripción:	et al.
Versión del editor:	http://dx.doi.org/10.1103/PhysRevD.93.112003
URI:	http://hdl.handle.net/10261/140526
DOI:	10.1103/PhysRevD.93.112003
Identificadores:	doi: 10.1103/PhysRevD.93.112003 e-issn: 1550-2368 issn: 1550-7998
Aparece en las colecciones:	(IFCA) Artículos

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