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Constraint from 2\beta \gamma

Constraint from \alpha

Constraint from B \rightarrow \tau \nu

Constraint from \mathcal{BR}(B \rightarrow \rho/\omega \gamma)/\mathcal{BR}(B\rightarrow K^* \gamma)

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 ...

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 ...

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 ...

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 ...

Constraint from \gamma

Constraint from K \rightarrow \pi \nu \bar{\nu}

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 ...

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 ...

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 ...

Current Members Marcella Bona Queen Mary University of London marcella.bona (at) cern.ch Marco Ciuchini INFN Roma Tre marco.ciuchini (at) roma3.infn ...

%$\mathrm{UTfit\ page\ on\ }D^0 \bar{D}^0\mathrm{\ mixing}$%

History of \sin 2\beta predictions EPS PDF PNG JPG GIF From left to right, they correspond to the following papers: dRLMPPPPS90 (de Rujula, Lusignoli ...

Fit results: Test Winter 2013 (pre Moriond13) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" start ...

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CKM formalism The Cabibbo Kobayashi Maskawa (CKM) matrix V_{CKM}=\left(\begin{array}{ccc} V_{ud} V_{us} V_{ub}\\ V_{cd} V_{cs} V_{cb}\\ V_{td} V_{ts} V ...

Under construction

Gamma Combination from the UTfit group Fit results: Summer 2013 (post EPS) Fit results: Winter 2013 (post CKM 2012) Fit results: Summer 2012 (post ICHEP 2012) ...

The angle %$\gamma$% of the CKM triangle can be measured comparing %$V_{cb}$% and %$V_{ub}$% mediated transitions in %$B \rightarrow D^{()}K^{()}$% decays. The decays ...

Input parameters and combination results: Winter 2013 (post CKM 2012) We use the relevant post CKM 2012 HFAG averages as inputs. The results of combination:

Input parameters and combination results: Winter 2013 (post CKM12) We use the relevant post CKM 2012 HFAG averages as inputs. The results of combination:

Input parameters and combination results: Summer 2017 (post EPS 2017) The results of combination:

Input parameters and combination results: Summer 2012 (post ICHEP12) We use the relevant post CKM 2012 HFAG averages as inputs. The results of combination:

The results of combination:

Input parameters and combination results: Summer 2014 (post Moriond 2014) We use the relevant post Moriond 2014 HFAG averages as inputs. The results of combination ...

Input parameters and combination results: Summer 2016 (post Moriond 2016) The results of combination:

Input parameters and combination results: Summer 2017 (post EPS 2017) The results of combination:

Input parameters and combination results: Winter 2016 (pre Moriond 2016) We use the relevant pre Moriond 2016 HFAG averages as inputs. The results of combination: ...

Input values for parameters and constraints entering in the UT fit. Most of the experimental averages are taken from HFAG. For the CKM angles we use the pdf's obtained ...

Description of the Bayesian method The method is explained in detail in M. Ciuchini et al., JHEP 0107 (2001) 013, hep ph/0012308. Given N parameters x_{i}(A,~B_{K ...

Standard Model Fit results: Winter 2018

Charm Mixing from the UTfit group Fit results: Summer 2013 (post EPS) %TWISTY{ mode="div" showlink="Method used: " hidelink="Method used" showimgleft="" hideimgleft ...

The results of combination:

%TWISTY{ prefix="" mode="div" link="Current New Physics fit results" showimgleft="" hideimgleft="" suffix="" }% Under construction %TWISTY{ prefix="" mode="div" ...

29/08/2023: Fit results section updated with summer 2022 update (summer 2023 soon to arrive). 21/09/2018: Fit results section updated with summer 2018 update. 16 ...

Page under construction

%$\beta_s$% Determination from the UTfit group We can obtain the values %$\beta_s$% using different sets of inputs: * all the information available ("Full fit ...

* for \, * EPS PDF PNG JPG GIF

Citations In citing our works, please refer to the UTfit web site, where the most updated results can be found, and, depending on the subject, to the most recent publication ...

Fit results: Summer 2023 Fit results: Summer 2022 Fit results: Summer 2018 Fit results: Summer 2016 Fit results: Summer 2014 (pre ICHEP) Fit results: PDG ...

Fit results: CKM 2018 (all measurements available by September 2018) Standard Model Fit New Physics Fit

New Physics Fit results: CKM 2018 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

Fit results: PDG 2012 This fit is prepared with the inputs for the Particle Data Group 2012 Review.

Fit results: PDG 2014 This fit is prepared with the inputs for the Particle Data Group 2014 Review.

Fit results: PDG 2016 This fit is prepared with the inputs for the Particle Data Group 2016 Review.

Fit results: PDG 2016 This fit is prepared with the inputs for the Particle Data Group 2016 Review.

Fit results: PDG 2018 This fit is prepared with the inputs for the Particle Data Group 2018 Review.

Fit results: PDG 2020 This fit is prepared with the inputs for the Particle Data Group 2020 Review.

TEST PDG 2022

Fit results: Summer 2010 (pre ICHEP) %TWISTY{ showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" firststart="hide" }% %TWISTY ...

Fit results: Summer 2011 (post LP11) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" firststart="hide ...

Fit results: Summer 2012 (post Moriond12) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" start="hide ...

Fit results: Summer 2012 (pre CKM12) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" start="hide" } ...

Fit results: Summer 2012 (pre ICHEP12) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" firststart="hide ...

Fit results: Summer 2013 (post EPS13) %TWISTY{ mode="div" showlink="Some Input Combinations" hidelink="Some Input Combinations" showimgleft="" hideimgleft="" }% More ...

Fit results: Summer 2014 (all measurements available by ICHEP 2014) More information on \gamma Standard Model Fit Neutral Charm Mixing Fit New Physics Fit ...

Neutral charm mixing results: Summer 2014

New Physics Fit results: Summer 2014 The fit presented here is meant to constrain the NP contributions to Delta; F =2 transitions by using the available experimental ...

Standard Model Fit results: Summer 2014

Standard Model Fit results: Summer 2015 Inclusive Exclisive

Fit results: Summer 2016 (all measurements available by ICHEP 2016) More information on \gamma Standard Model Fit New Physics Fit

New Physics Fit results: Summer 2016 Input used are the same as in Standard Model Fit. The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Summer 2016

Fit results: Summer 2017 (all measurements available after EPS 2017) More information on \gamma Standard Model Fit New Physics Fit

Fit results: Summer 2018 (all measurements available by June 2018) Standard Model Fit Neutral Charm Mixing Fit New Physics Fit

Neutral charm mixing results: Summer 2018

New Physics Fit results: Summer 2018 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Summer 2018

Fit results: Summer 2020 (all measurements available by April 2021) Standard Model Fit New Physics Fit

New Physics Fit results: Summer 2020 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

New Physics Fit (no alpha, fit2) results: Summer 2020

New Physics Fit (no gamma, fit1) results: Summer 2020

Standard Model Fit results: Summer 2020

Fit results: Winter 2021 (all measurements available by Sept 2021) Standard Model Fit New Physics Fit

New Physics Fit results: Summer 2021 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Summer 2021

Fit results: Summer 2022 (and paper) Standard Model Fit New Physics Fit

Standard Model Fit results (Exclusive only): Summer 2022

Standard Model Fit results (Inclusive only): Summer 2022

New Physics Fit results: Summer 2022 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Summer 2022

Standard Model Fit (hepfit) results: Summer 2022

Fit results: Summer 2023 New paper out in 2023: M. Bona et al. UTfit Collaboration , "New UTfit Analysis of the Unitarity Triangle in the Cabibbo Kobayashi Maskawa ...

New Physics Fit results: Summer 2023 Input used are the same as in Standard Model Fit . The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Summer 2023

Fit results: Winter 2012 (post LP11) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" start="hide" } ...

Fit results: Winter 2013 (pre Moriond13) %TWISTY{ mode="div" showlink="Standard Model Fit" hidelink="Standard Model Fit" showimgleft="" hideimgleft="" firststart ...

Fit results: Winter 2016 (all measurements available by Moriond 2016) More information on \gamma Standard Model Fit Tree Level Fit UUT Fit Neutral Charm Mixing ...

Neutral Charm Mixing Results: Winter 2016

New Physics Fit results: Winter 2016 Input used are the same as in Standard Model Fit. The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Winter 2016

Tree Level Fit results: Winter 2016 In principle, the presence of New Physics might affect the result of the UT analysis, changing the functional dependencies of ...

Tree Level Fit results: Winter 2016 It is possible to generalize the full UTfit beyond the Standard Model to all those NP models characterized by Minimal Flavour ...

Fit results: Winter 2018 (all measurements available by November 2017) More information on \gamma Standard Model Fit New Physics Fit

New Physics Fit results: Winter 2018 Input used are the same as in Standard Model Fit. The fit presented here is meant to constrain the NP contributions to Delta ...

Standard Model Fit results: Winter 2018

%TWISTY{ prefix="" mode="div" link="Winter 2010" showimgleft="" hideimgleft="" suffix="" }% %TWISTY{ prefix=" " mode="div" link="Additional information on fit ...

Tree Level Fit results: Summer 2018 In principle, the presence of New Physics might affect the result of the UT analysis, changing the functional dependencies of ...

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