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Measurement of the Inclusive Leptonic Asymmetry in Top-Quark Pairs that Decay to Two Charged Leptons at CDF

Abstract: We measure the inclusive forward–backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton–antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1??fb-1. We measure the leptonic forward–backward asymmetry, AlFB, to be 0.072±0.060 and the leptonic pair forward–backward asymmetry, AllFB, to be 0.076±0.082. The measured values can be compared with the standard model predictions of AlFB=0.038±0.003 and AllFB=0.048±0.004, respectively. Additionally, we combine the AlFB result with a previous determination from a final state with a single lepton and hadronic jets and obtain AlFB=0.090+0.028-0.026.

Other publications of the same journal or congress with authors from the University of Cantabria

 Fuente: Phys. Rev. Lett. Vol. 113, Num. 4, Pag. 042001 (2014)

 Publisher: American Physical Society

 Publication date: 01/07/2014

 No. of pages: 8

 Publication type: Article

 DOI: 10.1103/PhysRevLett.113.042001

 ISSN: 0031-9007,1079-7114

 Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Publication Url: https://doi.org/10.1103/PhysRevLett.113.042001

Authorship

AALTONEN, TIMO ANTERO

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON