pdgLive

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

"OUR EVALUATION" includes the measurements of $\Gamma _{{{\mathit B}_{{{s}}}^{0}}}$ and $\Delta \Gamma _{{{\mathit B}_{{{s}}}^{0}}}$ listed in this section, as well as constraints from effective lifetimes with pure $\mathit CP$ modes and flavor-specific modes.

VALUE ($ 10^{12} $ s${}^{-1}$)

DOCUMENT ID

TECN

COMMENT

$\bf{ 0.083 \pm0.005}$

OUR EVALUATION Error includes scale factor of 1.8. $~~$(Produced by HFLAV)

See the ideogram below.

$\bf{ 0.079 \pm0.005}$

OUR AVERAGE Error includes scale factor of 1.6.

See the ideogram below.

$0.0845$ $\pm0.0044$ $\pm0.0024$

LHCB

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$0.0607$ $\pm0.0047$ $\pm0.0043$

ATLS

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$0.115$ $\pm0.045$ $\pm0.011$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$0.114$ $\pm0.014$ $\pm0.007$

CMS

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$0.066$ $\pm0.018$ $\pm0.010$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$0.101$ $\pm0.013$ $\pm0.007$

ATLS

${{\mathit p}}{{\mathit p}}$ at 8 TeV

$0.066$ ${}^{+0.041}_{-0.044}$ $\pm0.007$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$0.095$ $\pm0.013$ $\pm0.007$

CMS

${{\mathit p}}{{\mathit p}}$ at 8 TeV

$0.0805$ $\pm0.0091$ $\pm0.0032$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$0.053$ $\pm0.021$ $\pm0.010$

ATLS

${{\mathit p}}{{\mathit p}}$ at 7 TeV

$0.068$ $\pm0.026$ $\pm0.009$

CDF

${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV

$0.163$ ${}^{+0.065}_{-0.064}$

D0

${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV

• • We do not use the following data for averages, fits, limits, etc. • •

$0.077$ $\pm0.008$ $\pm0.003$

LHCB

Repl. by AAIJ 2024A

$0.106$ $\pm0.011$ $\pm0.007$

LHCB

Repl. by AAIJ 2015I

$0.053$ $\pm0.021$ $\pm0.010$

ATLS

Repl. by AAD 2014U

$0.123$ $\pm0.029$ $\pm0.011$

LHCB

Repl. by AAIJ 2013AR

$0.075$ $\pm0.035$ $\pm0.006$

CDF

Repl. by AALTONEN 2012AJ

$0.085$ ${}^{+0.072}_{-0.078}$ $\pm0.001$

D0

Repl. by ABAZOV 2008AM

$0.076$ ${}^{+0.059}_{-0.063}$ $\pm0.006$

CDF

Repl. by AALTONEN 2012D

$0.19$ $\pm0.07$ ${}^{+0.02}_{-0.01}$

D0

Repl. by ABAZOV 2012D

$0.12$ ${}^{+0.08}_{-0.10}$ $\pm0.02$

D0

Repl. by ABAZOV 2007N

$0.13$ $\pm0.09$

D0

Repl. by ABAZOV 2009E

$0.47$ ${}^{+0.19}_{-0.24}$ $\pm0.01$

CDF

Repl. by AALTONEN 2008J

¹	Measured using time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ decays.

²	Measured using the time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays.

³	Reports a combination of $0.0657$ $\pm0.0043$ $\pm0.0037$ ps${}^{-1}$ with AAD 2016AP

⁴	Measured using a time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays with ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$.

⁵	Reports a combination of $0.1032$ $\pm0.0095$ $\pm0.0048$ ps${}^{-1}$ with KHACHATRYAN 2016S.

⁶	Measured using time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ in the region m(${{\mathit K}}{{\mathit K}}$) $>$ 1.05 GeV.

⁷	Reports a combination pf $0.066$ ${}^{+0.041}_{-0.044}$ $\pm0.007$ ps${}^{-1}$ with AAD 2014U.

⁸	Measured using time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \phi}}$ decays.

⁹	The error includes both statistical and systematic uncertainties.

¹⁰

AAIJ 2013AR result comes from a combined fit to ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ data sets. Also reports $\Delta \Gamma _{s}$ = $0.100$ $\pm0.016$ $\pm0.003$ ps${}^{-1}$ from a fit to ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ decays.

¹¹	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.

¹²	Measured the angular and lifetime parameters for the time-dependent angular untagged decays ${{\mathit B}_{{{d}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{*0}}$ and ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$.

¹³	Measured using the time-dependent angular analysis of ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays and assuming $\mathit CP$-violating phase $\phi _{s}$ = 0.

¹⁴	Obtaines 90$\%$ CL interval $-0.06$ $<\Delta \Gamma _{s}<$ 0.30.

¹⁵	ABAZOV 2007 reports $0.17$ $\pm0.09$ $\pm0.02$ with $\mathit CP$-violating phase $\phi _{s}$ as a free parameter.

¹⁶	Combines ${{\mathit D}^{0}}$ measurements of time-dependent angular distributions in ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ and charge asymmetry in semileptonic decays. There is a 4-fold ambiguity in the solution.

$\Delta \Gamma _{{{\mathit B}_{{{s}}}^{0}}}$ ($ 10^{12} $ s${}^{-1}$)

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