All analyses are rescaled to a common set of input parameters defined in common.param.
A spreadsheet with the breakdowns of the errors can be found as xls and gnumeric.
Experiment | BF (rescaled) | Parameters | Remarks |
---|---|---|---|
ALEPH | 5.73 +/- 0.26 +/- 0.37 | input parameters | Phys.Lett.B395:373-,1997 |
OPAL (Excl) | 5.39 +/- 0.19 +/- 0.41 | input parameters | Phys.Lett.B482:15-,2000, partial reco. |
OPAL (Incl) | 6.07 +/- 0.27 +/- 0.59 | input parameters | Phys.Lett.B482:15-,2000, exclusive reco. |
DELPHI (Incl) | 4.90 +/- 0.13 +/- 0.35 | input parameters | Phys.Lett.B510:55-,2001, partial reco. |
BELLE | 4.82 +/- 0.23 +/- 0.42 | input parameters | Phys.Lett.B526:247-,2002 |
CLEO | 6.24 +/- 0.19 +/- 0.39 | input parameters | Phys.Rev.Lett.89:081803,2002 |
DELPHI (Excl) | 5.68 +/- 0.20 +/- 0.41 | input parameters | preliminary, exclusive reco. |
BABAR | 4.92 +/- 0.03 +/- 0.29 | input parameters | preliminary |
Average | 5.27 +/- 0.19 | (CL = 0.064) | eps gif |
Experiment | Rescaled Value | Input | Remarks |
---|---|---|---|
ARGUS | 09.70 +/- 0.50 +/- 0.40 | input parameters | Phys. Lett. B318:397, 1993, e-tag |
CLEO | 10.49 +/- 0.17 +/- 0.43 | input parameters | Phys. Rev. Lett. 76:1570, 1996, e-tag |
BELLE | 10.90 +/- 0.12 +/- 0.50 | input parameters | Phys.Lett.B547:181, 2002, e-tag |
BABAR (breco) | 10.40 +/- 0.50 +/- 0.46 | input parameters | preliminary, hep-ex/0204001, breco |
BABAR | 10.87 +/- 0.18 +/- 0.30 | input parameters | submitted to Phys. Rev. D, e-tag |
BELLE (breco) | 11.19 +/- 0.20 +/- 0.31 | input parameters | breco-tag, preliminary |
Average | 10.81 +/- 0.25 | (CL = 0.331) | eps gif |
Experiment | |Vcb| F(1) (rescaled) | rho2 (rescaled) | Parameters | Remarks |
---|---|---|---|---|
ALEPH | 33.5 +/- 2.1 +/- 1.6 | 0.75 +/- 0.25 +/- 0.37 | input parameters | Phys.Lett.B395:373-,1997 |
OPAL | 38.3 +/- 1.2 +/- 2.5 | 1.23 +/- 0.14 +/- 0.39 | input parameters | Phys.Lett.B482:15-,2000 (partial reco) |
OPAL | 38.9 +/- 1.6 +/- 1.8 | 1.46 +/- 0.21 +/- 0.26 | input parameters | Phys.Lett.B482:15-,2000 (excl) |
DELPHI | 36.5 +/- 1.4 +/- 2.5 | 1.47 +/- 0.14 +/- 0.37 | input parameters | Phys.Lett.B510:55-,2001 |
BELLE | 36.0 +/-1.9 +/-1.9 | 1.45 +/- 0.16 +/- 0.20 | input parameters | Phys.Lett.B526:247-,2002 |
CLEO | 43.6 +/- 1.3 +/- 1.8 | 1.61 +/- 0.09 +/- 0.21 | input parameters | Phys.Rev.Lett.89:081803,2002 |
DELPHI | 38.5 +/- 1.8 +/- 2.0 | 1.32 +/- 0.15 +/- 0.32 | input parameters | preliminary |
average | 38.1 +/- 1.0 | 1.57 +/- 0.14 | chi2/dof = 26.2/14 (CL = 0.024) | |Vcb| F(1): plot; correlation: plot |
With F(1) = 0.91 +/- 0.04, this yields |Vcb| = (41.9 +/-1.1exp +/- 1.8theo)10-3
Experiment | |Vcb| G(1) (rescaled) | rho2 (rescaled) | Parameters | Remarks |
---|---|---|---|---|
ALEPH | 39.3+/- 10.0+/- 6.4 | 0.98+/- 0.98+/- 0.37 | input parameters | Phys.Lett.B395:373-,1997 |
CLEO | 44.8+/- 5.8+/- 3.5 | 1.27+/- 0.25+/- 0.14 | input parameters | Phys.Rev.Lett.82:3746-,1999 |
BELLE | 41.2+/- 4.4 +/- 5.1 | 1.12+/- 0.22+/- 0.14 | input parameters | Phys.Lett.B526:258-268,2002 |
average | 41.9+/- 3.7 | 1.15+/- 0.16 | chi2/dof = 0.01/6 (CL = 1.00) | plot |
With G(1)=1.0+/-0.07 (PDG), this gives |Vcb| = (41.9 +/-3.7exp +/-2.9theo) 10-3
Vcb = 40.7 (1 +/-0.010exp +/-0.012lambda_1, Lambda_bar +/-0.0201/m**3,QCD scale ) 10-3
where we use |Vcb| = |Vcb|CLEO SQRT(GammaSL/GammaSL, CLEO), GammaSL, CLEO=0.427.
Experiment | Rescaled Value | Parameters | Remarks |
---|---|---|---|
ALEPH | 4.12 +/- 1.00 | neural net | |
L3 | 5.70 +/- 1.70 | cut and count | |
DELPHI | 4.07 +/- 0.92 | mX | |
OPAL | 4.00 +/- 1.03 | neural net | |
LEP Average | 4.09 +/- 0.70 | ||
CLEO (endpoint) | 4.08 +/- 0.65 | 2.2 < p < 2.6 | |
BABAR (endpoint) | 4.43 +/- 0.72 | 2.3 < p < 2.6 | |
CLEO (m_{ X} - Q^{2}) | 4.05 +/- 0.89 | mX - Q2 | |
BABAR (m_{ X}) | 4.52 +/- 0.61 | mX | |
BELLE (m_{ X} with D^{*}l#nu tag) | 5.00 +/- 0.83 | mX with D*lnu tag | |
BELLE (m_{ X} - Q^{2}) | 3.96 +/- 0.70 | mX | |
No combination | eps gif |