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), using data collected with the Collider Detector at Fermilab. With an integrated luminosity of 9.1 fb−1, the leptonic forward-backward asymmetry, AℓFB, is measured to be 0.072±0.060 and the leptonic pair forward-backward asymmetry, AℓℓFB, is measured to be 0.076±0.082, 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.
Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF.
PAGLIARONE, Carmine Elvezio;
2014-01-01
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), using data collected with the Collider Detector at Fermilab. With an integrated luminosity of 9.1 fb−1, the leptonic forward-backward asymmetry, AℓFB, is measured to be 0.072±0.060 and the leptonic pair forward-backward asymmetry, AℓℓFB, is measured to be 0.076±0.082, 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
