$\bf{
0.1284 \pm0.0069}$
|
OUR EVALUATION
|
$\bf{
0.129 \pm0.004}$
|
OUR AVERAGE
|
$0.132$ $\pm0.001$ $\pm0.024$ |
|
1 |
|
D0 |
$0.152$ $\pm0.007$ $\pm0.011$ |
|
2 |
|
CDF |
$0.1312$ $\pm0.0049$ $\pm0.0042$ |
|
3 |
|
OPAL |
$0.127$ $\pm0.013$ $\pm0.006$ |
|
4 |
|
DLPH |
$0.1192$ $\pm0.0068$ $\pm0.0051$ |
|
5 |
|
L3 |
$0.121$ $\pm0.016$ $\pm0.006$ |
|
6 |
|
DLPH |
$0.114$ $\pm0.014$ $\pm0.008$ |
|
7 |
|
ALEP |
$0.129$ $\pm0.022$ |
|
8 |
|
ALEP |
$0.176$ $\pm0.031$ $\pm0.032$ |
1112 |
9 |
|
CDF |
$0.148$ $\pm0.029$ $\pm0.017$ |
|
10 |
|
UA1 |
• • • We do not use the following data for averages, fits, limits, etc. • • • |
$0.131$ $\pm0.020$ $\pm0.016$ |
|
11 |
|
CDF |
$0.1107$ $\pm0.0062$ $\pm0.0055$ |
|
12 |
|
OPAL |
$0.136$ $\pm0.037$ $\pm0.040$ |
|
13 |
|
AMY |
$0.144$ $\pm0.014$ ${}^{+0.017}_{-0.011}$ |
|
14 |
|
DLPH |
$0.131$ $\pm0.014$ |
|
15 |
|
DLPH |
$0.123$ $\pm0.012$ $\pm0.008$ |
|
|
|
L3 |
$0.157$ $\pm0.020$ $\pm0.032$ |
|
16 |
|
UA1 |
$0.121$ ${}^{+0.044}_{-0.040}$ $\pm0.017$ |
1665 |
17 |
|
DLPH |
$0.143$ ${}^{+0.022}_{-0.021}$ $\pm0.007$ |
|
18 |
|
OPAL |
$0.145$ ${}^{+0.041}_{-0.035}$ $\pm0.018$ |
|
19 |
|
OPAL |
$0.121$ $\pm0.017$ $\pm0.006$ |
|
20 |
|
L3 |
$0.132$ $\pm0.22$ ${}^{+0.015}_{-0.012}$ |
823 |
21 |
|
ALEP |
$0.178$ ${}^{+0.049}_{-0.040}$ $\pm0.020$ |
|
22 |
|
L3 |
$0.17$ ${}^{+0.15}_{-0.08}$ |
|
23, 24 |
|
MRK2 |
$0.21$ ${}^{+0.29}_{-0.15}$ |
|
23 |
|
MAC |
$>0.02 at 90\%\mathit CL$ |
|
23 |
|
MAC |
$0.121$ $\pm0.047$ |
|
25, 23 |
|
UA1 |
$<0.12 at 90\%\mathit CL$ |
|
26, 23 |
|
MRK2 |
1
Uses the dimuon charge asymmetry. Averaged over the mix of ${{\mathit b}}$-flavored hadrons.
|
2
Measurement performed using events containing a dimuon or an ${{\mathit e}}/{{\mathit \mu}}$ pair.
|
3
The average ${{\mathit B}}$ mixing parameter is determined simultaneously with ${{\mathit b}}$ and ${{\mathit c}}$ forward-backward asymmetries in the fit.
|
4
The experimental systematic and model uncertainties are combined in quadrature.
|
5
ACCIARRI 1999D uses maximum-likelihood fits to extract ${{\mathit \chi}_{{b}}}$ as well as the $\mathit A{}^{{{\mathit b}}}_{\mathit FB}$ in ${{\mathit Z}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ events containing prompt leptons.
|
6
This ABREU 1994J result is from 5182 ${{\mathit \ell}}{{\mathit \ell}}$ and 279 ${{\mathit \Lambda}}{{\mathit \ell}}$ events. The systematic error includes $0.004$ for model dependence.
|
7
BUSKULIC 1994G data analyzed using ${{\mathit e}}{{\mathit e}}$ , ${{\mathit e}}{{\mathit \mu}}$ , and ${{\mathit \mu}}{{\mathit \mu}}$ events.
|
8
BUSKULIC 1992B uses a jet charge technique combined with electrons and muons.
|
9
ABE 1991G measurement of $\chi $ is done with ${{\mathit e}}{{\mathit \mu}}$ and ${{\mathit e}}{{\mathit e}}$ events.
|
10
ALBAJAR 1991D measurement of $\chi $ is done with dimuons.
|
11
Uses di-muon events.
|
12
ALEXANDER 1996 uses a maximum likelihood fit to simultaneously extract ${{\mathit \chi}}$ as well as the forward-backward asymmetries in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ and ${{\mathit c}}{{\overline{\mathit c}}}$ .
|
13
UENO 1996 extracted $\chi $ from the energy dependence of the forward-backward asymmetry.
|
14
ABREU 1994F uses the average electric charge sum of the jets recoiling against a ${{\mathit b}}$-quark jet tagged by a high $\mathit p_{\mathit T}$ muon. The result is for ${{\overline{\mathit \chi}}}$ = ${{\mathit f}_{{d}}}{{\mathit \chi}_{{d}}}$ $+0.9$ ${{\mathit f}_{{s}}}{{\mathit \chi}_{{s}}}$ .
|
15
This ABREU 1994J result combines ${{\mathit \ell}}{{\mathit \ell}}$ , ${{\mathit \Lambda}}{{\mathit \ell}}$ , and jet-charge ${{\mathit \ell}}$ (ABREU 1994F) analyses. It is for ${{\overline{\mathit \chi}}}$ = $\mathit f_{\mathit d}{{\mathit \chi}_{{d}}}+0.96\mathit f_{\mathit s}{{\mathit \chi}_{{s}}}$.
|
16
ALBAJAR 1994 uses dimuon events. Not independent of ALBAJAR 1991D.
|
17
ABREU 1993C data analyzed using ${{\mathit e}}{{\mathit e}}$ , ${{\mathit e}}{{\mathit \mu}}$ , and ${{\mathit \mu}}{{\mathit \mu}}$ events.
|
18
AKERS 1993B analysis performed using dilepton events.
|
19
ACTON 1992C uses electrons and muons. Superseded by AKERS 1993B.
|
20
ADEVA 1992C uses electrons and muons.
|
21
DECAMP 1991 done with opposite and like-sign dileptons. Superseded by BUSKULIC 1992B.
|
22
ADEVA 1990P measurement uses ${{\mathit e}}{{\mathit e}}$ , ${{\mathit \mu}}{{\mathit \mu}}$ , and ${{\mathit e}}{{\mathit \mu}}$ events from 118k events at the ${{\mathit Z}}$. Superseded by ADEVA 1992C.
|
23
These experiments are not in the average because the combination of ${{\mathit B}_{{s}}}$ and ${{\mathit B}_{{d}}}$ mesons which they see could differ from those at higher energy.
|
24
The WEIR 1990 measurement supersedes the limit obtained in SCHAAD 1985 . The 90$\%$ CL are $0.06$ and $0.38$.
|
25
ALBAJAR 1987C measured $\chi $ = ( ${{\overline{\mathit B}}^{0}}$ $\rightarrow$ ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}$ X) divided by the average production weighted semileptonic branching fraction for ${{\mathit B}}$ hadrons at 546 and 630 GeV.
|
26
Limit is average probability for hadron containing ${{\mathit B}}$ quark to produce a positive lepton.
|