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
CDF Collaboration, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, et al. (2008). Forward-Backward Asymmetry in Top Quark Production in p anti-p Collisions at s**(1/2) 1.96 TeV. PHYSICAL REVIEW LETTERS, 101(20), 1-8 [10.1103/PhysRevLett.101.202001].
Forward-Backward Asymmetry in Top Quark Production in p anti-p Collisions at s**(1/2) 1.96 TeV
CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2008
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 valuesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


