"We present the summer 2011 update of the Unitarity Triangle (UT) analysis performed by the UTfit Collaboration within the Standard Model (SM) and beyond. The increased accuracy on several of the fundamental constraints is starting to enhance some of the tensions amongst and within the constraints themselves. In particular, the long standing tension between exclusive and inclusive determinations of the Vub and Vcb CKM matrix elements is now playing a major role. The SM expected values for sin2beta are thus extracted using either the inclusive or the exclusive. inputs. We then present the generalisation the UT analysis to investigate new physics (NP) effects: in the NP analysis, both CKM and NP parameters are fitted simultaneously to obtain the possible NP contributions in any specific sector."
Bevan A., J., Bona, M., Ciuchini, M., Derkach, D., Franco, E., Silvestrini, L., et al. (2011). Standard Model updates and new physics analysis with the Unitarity Triangle fit. In Proceedings of the 2011 Europhysics Conference On High Energy Physics: HEP 2011, EPS-HEP2011 (pp.185).
Standard Model updates and new physics analysis with the Unitarity Triangle fit
LUBICZ, Vittorio;TARANTINO, CECILIA;
2011-01-01
Abstract
"We present the summer 2011 update of the Unitarity Triangle (UT) analysis performed by the UTfit Collaboration within the Standard Model (SM) and beyond. The increased accuracy on several of the fundamental constraints is starting to enhance some of the tensions amongst and within the constraints themselves. In particular, the long standing tension between exclusive and inclusive determinations of the Vub and Vcb CKM matrix elements is now playing a major role. The SM expected values for sin2beta are thus extracted using either the inclusive or the exclusive. inputs. We then present the generalisation the UT analysis to investigate new physics (NP) effects: in the NP analysis, both CKM and NP parameters are fitted simultaneously to obtain the possible NP contributions in any specific sector."I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
