https://www.utfit.org/foswiki/bin/view/UTfit The UTfit web of Foswiki, the Free and Open Source Wiki. en-us Copyright 2026 by contributing authors Wiki Administrator [webmaster@utfit.org] The contributing authors of UTfit UTfit https://www.utfit.org/foswiki/bin/view/UTfit https://www.utfit.org/foswiki/pub/System/ProjectLogos/UTfitLogo.png https://www.utfit.org/foswiki/bin/view/UTfit/Contacts Current Members Marcella Bona Queen Mary University of London marcella.bona (at) cern.ch Marco Ciuchini INFN Roma Tre marco.ciuchini (at) roma3.infn ... (last changed by MarcellaBona) 2025-10-22T18:39:16Z MarcellaBona https://www.utfit.org/foswiki/bin/view/UTfit/Constraints Constraints used in the UT fit Before the B Factory era, the fit was done using the measurements of UT sides (through semileptonic decays and mixing processes of the ... (last changed by AdminUser) 2010-07-24T10:58:10Z admin https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintCos2b Constraint from \cos 2\beta There are two ways to access the value of %$\cos 2\beta$%, which allows one to remove the ambiguity between %$\beta$% and %$\pi \beta ... (last changed by AdrianBevan) 2010-06-30T20:43:30Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintSin2b Constraint from \sin 2\beta The mixing induced CP asymmetry in the %$B^0 \rightarrow J/\psi K^0$% decay allows one to determine the sine of the angle %$2\beta ... (last changed by AdrianBevan) 2010-06-30T20:41:10Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintDeltaMs Constraint from \Delta m_d /\Delta m_s The %$B^0_s \bar{B}^0_s$% oscillation frequency, which is related to the mass difference between the light and the heavy ... (last changed by AdrianBevan) 2010-06-30T20:38:22Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintDeltaMd Constraint from \Delta m_d In the Standard Model, %$B^0 \bar{B}^0$% oscillations occur through a second order process (a box diagram) with a loop containing W ... (last changed by AdrianBevan) 2010-06-30T20:31:52Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintEpsK Constraint from \varepsilon_K Indirect CP violation in the Kaon system is usually expressed in terms of %$ \varepsilon_K $% parameter which is the fraction of ... (last changed by AdrianBevan) 2010-06-30T20:28:15Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintVubVcb Constraint from \left V_{ub} / V_{cb} \right B hadrons can decay through the %$b \rightarrow c$% and %$b \rightarrow u$% transitions. The relative ratio of ... (last changed by AdrianBevan) 2010-06-30T20:26:05Z AdrianBevan https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintBtoVGCharged Constraint from \mathcal{BR}(B \rightarrow \rho/\omega \gamma)/\mathcal{BR}(B\rightarrow K^* \gamma) (last changed by VincenzoVagnoni) 2010-04-04T15:55:07Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintKtoPiNuNu Constraint from K \rightarrow \pi \nu \bar{\nu} (last changed by VincenzoVagnoni) 2010-04-04T15:54:55Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintBtoTauNu Constraint from B \rightarrow \tau \nu (last changed by VincenzoVagnoni) 2010-04-04T15:54:40Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/Constraint2bpGamma Constraint from 2\beta \gamma (last changed by VincenzoVagnoni) 2010-04-04T15:54:27Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintGamma Constraint from \gamma (last changed by VincenzoVagnoni) 2010-04-04T15:54:11Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/ConstraintAlpha Constraint from \alpha (last changed by VincenzoVagnoni) 2010-04-04T15:53:57Z VincenzoVagnoni https://www.utfit.org/foswiki/bin/view/UTfit/ConferenceTalks Page under construction (last changed by AdminUser) 2010-03-29T01:14:59Z admin