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$\Delta \Gamma _{{{\mathit B}_{{s}}^{0}}}/\Gamma _{{{\mathit B}_{{s}}^{0}}}$

INSPIRE   PDGID:

S086DRA

$\Gamma _{{{\mathit B}_{{s}}^{0}}}$ and $\Delta \Gamma _{{{\mathit B}_{{s}}^{0}}}$ are the decay rate average and difference between two ${{\mathit B}_{{s}}^{0}}$ $\mathit CP$ eigenstates (light $−$ heavy).

"OUR EVALUATION" is provided by the Heavy Flavor Averaging Group (HFLAV, https://hflav.web.cern.ch/). It is derived from the averages of $\Gamma _{{{\mathit B}_{{s}}^{0}}}$ and $\Delta \Gamma _{{{\mathit B}_{{s}}^{0}}}$ (and their correlation).

VALUE CL% DOCUMENT ID TECN  COMMENT $\bf{ 0.126 \pm0.007}$ OUR EVALUATION • • We do not use the following data for averages, fits, limits, etc. • • $0.090$ $\pm0.009$ $\pm0.023$ 1 ESEN 2013 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(5S)}}$ 2 AAIJ 2012 D LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV 3 AALTONEN 2012 D CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV 4 ABAZOV 2012 D D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $0.147$ ${}^{+0.036}_{-0.030}$ ${}^{+0.042}_{-0.041}$ 1 ESEN 2010 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(5S)}}$ $0.072$ $\pm0.021$ $\pm0.022$ 5 ABAZOV 2009 I D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $> 0.012$ 95 5 AALTONEN 2008 F CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $0.116$ ${}^{+0.09}_{-0.10}$ $\pm0.010$ 6 AALTONEN 2008 J CDF Repl. by AALTONEN 2012D $0.079$ ${}^{+0.038}_{-0.035}$ ${}^{+0.031}_{-0.030}$ 5 ABAZOV 2007 Y D0 Repl. by ABAZOV 2009I $0.24$ ${}^{+0.28}_{-0.38}$ ${}^{+0.03}_{-0.04}$ 6, 7 ABAZOV 2005 W D0 Repl. by ABAZOV 2008AM $0.65$ ${}^{+0.25}_{-0.33}$ $\pm0.01$ 6 ACOSTA 2005 CDF Repl. by AALTONEN 2008J $<0.46$ 95 8 ABREU 2000 Y DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $<0.69$ 95 9 ABREU,P 2000 G DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $0.25$ ${}^{+0.21}_{-0.14}$ 10 BARATE 2000 K ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $<0.83$ 95 11 ABE 1999 D CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at $1.8$ TeV $<0.67$ 95 12 ACCIARRI 1998 S L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ 1  Assumes $\mathit CP$ violation is negligible. 2  Measured using the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays. 3  Uses the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays and assuming $\mathit CP$-violating angle ${{\mathit \beta}_{{s}}}$( ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ ) = 0.02. 4  Measured using fully reconstructed ${{\mathit B}_{{s}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays. 5  Assumes 2 B( ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{(*)}}{{\mathit D}_{{s}}^{(*)}}$ ) $\simeq{}$ $\Delta \Gamma {}^{CP}_{s}$ $/$ $\Gamma _{s}$. 6  Measured using the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays. 7  Uses $\vert A_{0}\vert ^2−\vert A_{\parallel}\vert ^2=0.355$ $\pm0.066$ from ACOSTA 2005 . 8  Uses ${{\mathit D}_{{s}}^{-}}{{\mathit \ell}^{+}}$ , and ${{\mathit \phi}}{{\mathit \ell}^{+}}$ vertices. 9  Measured using ${{\mathit D}_{{s}}}$ hadron vertices. 10  Uses ${{\mathit \phi}}{{\mathit \phi}}$ correlations from ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{(*)+}}{{\mathit D}_{{s}}^{(*)-}}$ . 11  ABE 1999D assumes $\tau _{{{\mathit B}_{{s}}^{0}}}$= $1.55$ $\pm0.05~$ps. 12  ACCIARRI 1998S assumes $\tau _{{{\mathit B}_{{s}}^{0}}}$= $1.49$ $\pm0.06~$ps and PDG 1998 values of ${{\mathit b}}~$production fraction.

References:

ESEN 2013 PR D87 031101 Precise Measurement of the Branching Fractions for ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{(*)+}}{{\mathit D}_{{s}}^{(*)-}}$ and First Measurement of the ${{\mathit D}_{{s}}^{*+}}{{\mathit D}_{{s}}^{*-}}$ Polarization using ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions AAIJ 2012D PRL 108 101803 Measurement of the CP-Violating Phase ${{\mathit \phi}_{{s}}}$ in the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ AALTONEN 2012D PR D85 072002 Measurement of the $\mathit CP$-Violating Phase $\mathit \beta {}^{{{\mathit J / \psi}}{{\mathit \phi}}}_{s}$ in ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ Decays with the CDF II Detector ABAZOV 2012D PR D85 032006 Measurement of the $\mathit CP$-Violating Phase ${{\mathit \phi}}{}^{{{\mathit J / \psi}}{{\mathit \phi}}}_{s}$ using the Flavor-Tagged Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ in 8$~{\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions ESEN 2010 PRL 105 201802 Observation of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}^{(*)}}^{+}}{{\mathit D}_{{s}^{(*)}}^{-}}$ using ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions and a Determination of the ${{\mathit B}_{{s}}}-{{\overline{\mathit B}}_{{s}}}$ Width Difference $\Delta \Gamma _{s}$ ABAZOV 2009I PRL 102 091801 Evidence for the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{(*)}}{{\mathit D}_{{s}}^{(*)}}$ and a Measurement of $\Delta \Gamma {}^{\mathit CP}_{s}/\Gamma _{\mathit s}$ AALTONEN 2008J PRL 100 121803 Measurement of Lifetime and Decay-Width Difference in ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ Decays AALTONEN 2008F PRL 100 021803 First Observation of the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit D}_{{s}}^{+}}$ and Measurement of Its Branching Ratio ABAZOV 2007Y PRL 99 241801 Study of the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}^{{(*)}}_{s}}{{\mathit D}^{{(*)}}_{s}}$ ABAZOV 2005W PRL 95 171801 Measurement of the Lifetime Difference in the ${{\mathit B}_{{s}}^{0}}$ System ACOSTA 2005 PRL 94 101803 Measurement of the Lifetime Difference between ${{\mathit B}_{{s}}}$ Mass Eigenstates ABREU 2000Y EPJ C16 555 Measurement of the ${{\mathit B}_{{s}}^{0}}$ Lifetime and Study of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\overline{\mathit B}}_{{s}}^{0}}$ Oscillations using ${{\mathit D}_{{s}}}{{\mathit \ell}}$ Events ABREU,P 2000G EPJ C18 229 Study of ${{\mathit B}_{{s}}^{0}}{{\overline{\mathit B}}_{{s}}^{0}}$ Oscillations and ${{\mathit B}_{{s}}^{0}}$ Lifetimes using Hadronic Decays of ${{\mathit B}_{{s}}^{0}}$ Mesons BARATE 2000K PL B486 286 A Study of the Decay Width Difference in the ${{\mathit B}_{{s}}^{0}}$ $−$ ${{\overline{\mathit B}}_{{s}}^{0}}$ System using ${{\mathit \phi}}{{\mathit \phi}}$ Correlations ABE 1999D PR D59 032004 Measurement of the ${{\mathit B}_{{s}}^{0}}$ Meson Lifetime using Semileptonic Decays ACCIARRI 1998S PL B438 417 Upper Limit on the Lifetime Difference of Short- and Long-Lived ${{\mathit B}_{{s}}^{0}}$ Mesons