#### ${{\mathit B}_{{sH}}^{0}}$ MEAN LIFE

${{\mathit B}_{{sH}}^{0}}$ is the heavy mass state of two ${{\mathit B}_{{s}}^{0}}$ $\mathit CP$ eigenstates.

"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 ($10^{-12}$ s) DOCUMENT ID TECN  COMMENT
 $\bf{ 1.624 \pm0.009}$ OUR EVALUATION
• • We do not use the following data for averages, fits, limits, etc. • •
$2.07$ $\pm0.29$ $\pm0.03$ 1
 2022
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$1.70$ ${}^{+0.60}_{-0.43}$ $\pm0.09$ 1
 2020 AG
CMS ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$1.677$ $\pm0.034$ $\pm0.011$ 2
 2018 BY
CMS ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$2.04$ $\pm0.44$ $\pm0.05$ 1
 2017 AI
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$1.70$ $\pm0.14$ $\pm0.05$ 3
 2016 C
D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$1.75$ $\pm0.12$ $\pm0.07$ 4
 2013 AB
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
$1.652$ $\pm0.024$ $\pm0.024$ 5
 2013 AR
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
$1.700$ $\pm0.040$ $\pm0.026$ 6
 2012 AN
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
7
 2012 D
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$1.70$ ${}^{+0.12}_{-0.11}$ $\pm0.03$ 6
 2011 AB
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$1.613$ ${}^{+0.123}_{-0.113}$ 8, 9
 2008 J
CDF Repl. by AALTONEN 2012D
$1.58$ ${}^{+0.39}_{-0.42}$ ${}^{+0.01}_{-0.02}$ 9
 2005 W
D0 Repl. by ABAZOV 2008AM
$2.07$ ${}^{+0.58}_{-0.46}$ $\pm0.03$ 9
 2005
CDF Repl. by AALTONEN 2008J
 1 Measured using ${{\mathit B}_{{s}}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ decays which, in the Standard Model, correspond to ${{\mathit B}_{{sH}}^{0}}$ decays. Assumes $-2$ Re(${{\mathit \lambda}}$ )/(1 + $\vert {{\mathit \lambda}}$ $\vert ^2$) = 1.
 2 Measured using ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ decays with 0.9240 $<$ m( ${{\mathit \pi}}{{\mathit \pi}}$ ) $<$ 1.0204 GeV, which is dominated by the ${{\mathit f}_{{0}}{(980)}}$ resonance, making it a $\mathit CP$-odd state.
 3 Measured using ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ mode with 0.880 $<$ $\mathit m$( ${{\mathit \pi}}{{\mathit \pi}}$ ) $<$ 1.080 GeV/c${}^{2}$, which is mostly ${{\mathit J / \psi}}{{\mathit f}{(0980)}}$ mode, a pure $\mathit CP$-odd final state.
 4 Measured using a pure $\mathit CP$-odd final state ${{\mathit J / \psi}}{{\mathit K}_S^0}$ with the assumption that contributions from penguin diagrams are small.
 5 Measured using ${{\mathit B}_{{s}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ decays which, in the limit of ${{\mathit \phi}_{{s}}}$ = 0 and $\vert {{\mathit \lambda}}$ $\vert$ = 1, correspond to ${{\mathit B}_{{sH}}^{0}}$ decays.
 6 Measured using a pure $\mathit CP$-odd final state ${{\mathit J / \psi}}{{\mathit f}_{{0}}{(980)}}$ .
 7 Uses the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays assuming $\mathit CP$-violating angle ${{\mathit \beta}_{{s}}}$ ( ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ ) = 0.02.
 8 Obtained from $\Delta \Gamma _{s}$ and $\Gamma _{s}$ fit with a correlation of 0.6.
 9 Measured using the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays.
References:
 AAIJ 2022
PRL 128 041801
 Also
PR D105 012010
 SIRUNYAN 2020AG
JHEP 2004 188 Measurement of properties of B$^0_\mathrm{s}\to\mu^+\mu^-$ decays and search for B$^0\to\mu^+\mu^-$ with the CMS experiment
 SIRUNYAN 2018BY
EPJ C78 457 Measurement of b hadron lifetimes in pp collisions at $\sqrt{s} =$ 8 TeV
 AAIJ 2017AI
PRL 118 191801 Measurement of the ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ Branching Fraction and Effective Lifetime and Search for ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ Decays
 ABAZOV 2016C
PR D94 012001 ${{\mathit B}_{{s}}^{0}}$ Lifetime Measurement in the $\mathit CP$-odd Decay Channel ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit f}_{{0}}{(980)}}$
 AAIJ 2013AB
NP B873 275 Measurement of the Effective ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ Lifetime
 AAIJ 2013AR
PR D87 112010 Measurement of $\mathit CP$ Violation and the ${{\mathit B}_{{s}}^{0}}$ Meson Decay width Difference with ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Decays
 AAIJ 2012AN
PRL 109 152002 Measurement of the ${{\overline{\mathit B}}_{{s}}^{0}}$ Effective Lifetime in the ${{\mathit J / \psi}}{{\mathit f}_{{0}}{(980)}}$ Final State
 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
 AALTONEN 2011AB
PR D84 052012 Measurement of Branching Ratio and ${{\mathit B}_{{s}}^{0}}$ Lifetime in the Decay ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit f}_{{0}}{(980)}}$ at CDF
 AALTONEN 2008J
PRL 100 121803 Measurement of Lifetime and Decay-Width Difference in ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ Decays
 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