We present measurements of the forward-backward charge asymmetry in top pair production using 1.9 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A(FB)(p (p) over bar) = 0.17 +/- 0.08 in the p (p) over bar frame and A(FB)(t (t) over bar) = 0.24 +/- 0.14 in the t (t) over bar frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.

T., A., J., A., T., A., M., A., B., G., S., A., et al. (2008). Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 101(20), 202001-1-202001-8 [10.1103/PhysRevLett.101.202001].

Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV

CATASTINI, PIERLUIGI;CAVALIERE, VIVIANA;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;TURINI, NICOLA;
2008-01-01

Abstract

We present measurements of the forward-backward charge asymmetry in top pair production using 1.9 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A(FB)(p (p) over bar) = 0.17 +/- 0.08 in the p (p) over bar frame and A(FB)(t (t) over bar) = 0.24 +/- 0.14 in the t (t) over bar frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.
T., A., J., A., T., A., M., A., B., G., S., A., et al. (2008). Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 101(20), 202001-1-202001-8 [10.1103/PhysRevLett.101.202001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/26723
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