Inputs < UTfit

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 combining the available experimental information (see here for details). All the other inputs are listed below.

Table of Summer 2009 inputsTable of Summer 2009 inputs

Constraints, Parameters Value Gaussian Error Flat Error Comments

$\lambda$ 0.2258 0.0014 - -

$\left | V_{cb} \right |~[10^{-3}]$ 39.2 1.1 - Average of exclusive

$\left | V_{cb} \right |~[10^{-3}]$ 41.7 0.7 - Average of inclusive

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(excl.)}$ 35.0 4.0 - HFAG BR + Lattice QCD

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(incl.)}$ 39.9 1.5 4.0 HFAG average

4.21 0.08 - -

1.3 0.1 - -

$\Delta m_d~[ps^{-1}]$ 0.507 0.005 - WA (CDF/CLEO/LEP/BaBar/Belle)

$\Delta m_s~[ps^{-1}]$ 17.77 0.12 - CDF Likelihood is used

161.2 1.7 - (CDF/D0)

$f_{B_s}\sqrt{B_{B_s}}~[MeV]$ 270 30 - Lattice QCD

$\xi$ 1.21 0.04 - Lattice QCD

$|\varepsilon_K|~[10^{-3}]$ 2.228 0.011 - -

0.75 0.07 - Lattice QCD

0.160 - - -

$\Delta m_K~[10^{-2}~ps^{-1}]$ 0.5301 - - -

$\alpha_s(M_Z)$ 0.119 0.003 - -

$G_F~[10^{-5}~GeV^{-2}]$ 1.16639 - - -

80.425 - - -

$M_{B_d}~[GeV/c^2]$ 5.279 - - -

$M_{B_s}~[GeV/c^2]$ 5.375 - - -

$M_{K^0}~[GeV/c^2]$ 0.497648 - - -

Table of Summer 2008 inputsTable of Summer 2008 inputs

Constraints, Parameters Value Gaussian Error Flat Error Comments

$\lambda$ 0.2258 0.0014 - -

$\left | V_{cb} \right |~[10^{-3}]$ 39.2 1.1 - Average of exclusive

$\left | V_{cb} \right |~[10^{-3}]$ 41.7 0.7 - Average of inclusive

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(excl.)}$ 35.0 4.0 - HFAG BR + Lattice QCD

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(incl.)}$ 39.9 1.5 4.0 HFAG average

4.21 0.08 - -

1.3 0.1 - -

$\Delta m_d~[ps^{-1}]$ 0.507 0.005 - WA (CDF/CLEO/LEP/BaBar/Belle)

$\Delta m_s~[ps^{-1}]$ 17.77 0.12 - CDF Likelihood is used

161.2 1.7 - (CDF/D0)

$f_{B_s}\sqrt{B_{B_s}}~[MeV]$ 270 30 - Lattice QCD

$\xi$ 1.21 0.04 - Lattice QCD

$|\varepsilon_K|~[10^{-3}]$ 2.280 0.013 - -

0.75 0.07 - Lattice QCD

0.160 - - -

$\Delta m_K~[10^{-2}~ps^{-1}]$ 0.5301 - - -

$\alpha_s(M_Z)$ 0.119 0.003 - -

$G_F~[10^{-5}~GeV^{-2}]$ 1.16639 - - -

80.425 - - -

$M_{B_d}~[GeV/c^2]$ 5.279 - - -

$M_{B_s}~[GeV/c^2]$ 5.375 - - -

Table of Winter 2008 inputsTable of Winter 2008 inputs

Constraints, Parameters Value Gaussian Error Flat Error Comments

$\lambda$ 0.2258 0.0014 - -

$\left | V_{cb} \right |~[10^{-3}]$ 39.1 0.6 1.7 Average of exclusive

$\left | V_{cb} \right |~[10^{-3}]$ 41.7 0.7 - Average of inclusive

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(excl.)}$ 34.0 4.0 - HFAG BR + Lattice QCD

$\left | V_{ub} \right |~[10^{-4}] \mathrm{(incl.)}$ 43.1 3.8 - HFAG average

4.21 0.08 - -

1.3 0.1 - -

$\Delta m_d~[ps^{-1}]$ 0.507 0.005 - WA (CDF/CLEO/LEP/BaBar/Belle)

$\Delta m_s~[ps^{-1}]$ 17.77 0.12 - CDF Likelihood is used

161.2 1.7 - (CDF/D0)

$f_{B_s}\sqrt{B_{B_s}}~[MeV]$ 262 35 - Lattice QCD

$\xi$ 1.23 0.06 - Lattice QCD

$|\varepsilon_K|~[10^{-3}]$ 2.280 0.013 - -

0.79 0.04 0.08 Lattice QCD

0.160 - - -

$\Delta m_K~[10^{-2}~ps^{-1}]$ 0.5301 - - -

$\alpha_s(M_Z)$ 0.119 0.003 - -

$G_F~[10^{-5}~GeV^{-2}]$ 1.16639 - - -

80.425 - - -

$M_{B_d}~[GeV/c^2]$ 5.279 - - -

$M_{B_s}~[GeV/c^2]$ 5.375 - - -

Webs
System
UTfit

Ideas, requests, problems regarding this web site? Send feedback

Constraints, Parameters	Value	Gaussian Error	Flat Error	Comments
$\lambda$	0.2258	0.0014	-	-
$\left \| V_{cb} \right \|~[10^{-3}]$	39.2	1.1	-	Average of exclusive
$\left \| V_{cb} \right \|~[10^{-3}]$	41.7	0.7	-	Average of inclusive
$\left \| V_{ub} \right \|~[10^{-4}] \mathrm{(excl.)}$	35.0	4.0	-	HFAG BR + Lattice QCD
$\left \| V_{ub} \right \|~[10^{-4}] \mathrm{(incl.)}$	39.9	1.5	4.0	HFAG average
	4.21	0.08	-	-
	1.3	0.1	-	-
$\Delta m_d~[ps^{-1}]$	0.507	0.005	-	WA (CDF/CLEO/LEP/BaBar/Belle)
$\Delta m_s~[ps^{-1}]$	17.77	0.12	-	CDF Likelihood is used
	161.2	1.7	-	(CDF/D0)
$f_{B_s}\sqrt{B_{B_s}}~[MeV]$	270	30	-	Lattice QCD
$\xi$	1.21	0.04	-	Lattice QCD
$\|\varepsilon_K\|~[10^{-3}]$	2.228	0.011	-	-
	0.75	0.07	-	Lattice QCD
	0.160	-	-	-
$\Delta m_K~[10^{-2}~ps^{-1}]$	0.5301	-	-	-
$\alpha_s(M_Z)$	0.119	0.003	-	-
$G_F~[10^{-5}~GeV^{-2}]$	1.16639	-	-	-
	80.425	-	-	-
$M_{B_d}~[GeV/c^2]$	5.279	-	-	-
$M_{B_s}~[GeV/c^2]$	5.375	-	-	-
$M_{K^0}~[GeV/c^2]$	0.497648	-	-	-