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Journal of High Energy Physics 0507 (2005) 028
The 2004 UTfit Collaboration Report on the Status of the Unitarity Triangle in the Standard Model
M. Bona1, M. Ciuchini2, E. Franco3, V. Lubicz2, G. Martinelli3, F. Parodi4, M. Pierini, P. Roudeau5, C. Schiavi4, L. Silvestrini3, A. Stocchi5
UTfit Collaboration(s)

Using the latest determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the measurements of |V_ub/V_cb|, Delta M_d, the lower limit on Delta M_s, epsilon_k, and the measurement of the phase of the B_d - anti B_d mixing amplitude through the time-dependent CP asymmetry in B^0 to J/psi K^0 decays. In addition, we consider the direct determination of alpha, gamma, 2 beta + gamma and cos(2 beta) from the measurements of new CP-violating quantities, recently performed at the B factories. We also discuss the opportunities offered by improving the precision of the various physical quantities entering in the determination of the Unitarity Triangle parameters. The results and the plots presented in this paper can also be found at http://www.utfit.org, where they are continuously updated with the newest experimental and theoretical results.
1 :  INFN, Sezione di Torino - Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2 :  INFN, Sezione di Roma 3 - Istituto Nazionale di Fisica Nucleare, Sezione di Roma 3
3 :  INFN - Istituto Nazionale di Fisica Nucleare [Sezione di Roma 1]
4 :  INFN, Sezione di Genova - Istituto Nazionale di Fisica Nucleare, Sezione di Genova
5 :  LAL - Laboratoire de l'Accélérateur Linéaire
Physique/Physique des Hautes Energies - Phénoménologie
CP violation – Quark Masses and SM Parameters – Standard Model – Weak Decays
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