title: Constraints on new physics from the quark mixing unitarity triangle.
abstract: The status of the unitary triangle beyond the standard model including the most recent results on Deltam[s] on dilepton asymmetries and on width differences is presented. Even allowing for general new physics loop contributions the unitarity triangle must be very close to the standard model result. With the new measurements from the Fermilab Tevatron, we obtain for the first time a significant constraint on new physics in the Bs sector. We present the allowed ranges of new physics contributions to DeltaF=2 processes and of the time-dependent CP asymmetry in Bs-->J/psivarphi decays.
authors.affiliation: Laboratoire d'Annecy-le-Vieux de Physique des Particules LAPP, IN2P3/CNRS, Université de Savoie, France.
authors.forename: M
authors.initials: M
authors.lastname: Bona
authors.forename: M
authors.initials: M
authors.lastname: Ciuchini
authors.forename: E
authors.initials: E
authors.lastname: Franco
authors.forename: V
authors.initials: V
authors.lastname: Lubicz
authors.forename: G
authors.initials: G
authors.lastname: Martinelli
authors.forename: F
authors.initials: F
authors.lastname: Parodi
authors.forename: M
authors.initials: M
authors.lastname: Pierini
authors.forename: P
authors.initials: P
authors.lastname: Roudeau
authors.forename: C
authors.initials: C
authors.lastname: Schiavi
authors.forename: L
authors.initials: L
authors.lastname: Silvestrini
authors.forename: A
authors.initials: A
authors.lastname: Stocchi
authors.forename: V
authors.initials: V
authors.lastname: Vagnoni