${{\mathit B}_{{sL}}^{0}}$ MEAN LIFE

INSPIRE   PDGID:
S086TSL
${{\mathit B}_{{sL}}^{0}}$ is the light 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
$\bf{ 1.431 \pm0.007}$ OUR EVALUATION
• • We do not use the following data for averages, fits, limits, etc. • •
$1.452$ $\pm0.014$ $\pm0.0073$ 1
AAIJ
2023
LHCB ${{\mathit p}}{{\mathit p}}$ at 7,8,13 TeV
$1.40$ $\pm0.02$ 2
SIRUNYAN
2018BY
 CMS ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$1.479$ $\pm0.034$ $\pm0.011$ 1
AAIJ
2016AL
 LHCB Repl. by AAIJ 2023
$1.379$ $\pm0.026$ $\pm0.017$ 3
AAIJ
2014F
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$1.407$ $\pm0.016$ $\pm0.007$ 4
AAIJ
2014R
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
$1.440$ $\pm0.096$ $\pm0.009$ 4
AAIJ
2012
LHCB Repl. by AAIJ 2014R
$1.455$ $\pm0.046$ $\pm0.006$ 4
AAIJ
2012R
 LHCB Repl. by AAIJ 2014R
5
AALTONEN
2012D
 CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$1.437$ ${}^{+0.054}_{-0.047}$ 6, 7
AALTONEN
2008J
 CDF Repl. by AALTONEN 2012D
$1.24$ ${}^{+0.14}_{-0.11}$ ${}^{+0.01}_{-0.02}$ 7
ABAZOV
2005W
 D0 Repl. by ABAZOV 2008AM
$1.05$ ${}^{+0.16}_{-0.13}$ $\pm0.02$ 7
ACOSTA
2005
CDF Repl. by AALTONEN 2008J
$1.27$ $\pm0.33$ $\pm0.08$ 8
BARATE
2000K
 ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$
1  Measured using ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \eta}}$ decays.
2  Measured using results in SIRUNYAN 2018BY for the heavy ${{\mathit B}_{{s}}^{0}}$ lifetime obtained from ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ decays and the average effective ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ lifetime, and magnitude squared of the $\mathit CP$-odd amplitude $\vert A_{\perp}\vert ^2$ = $0.250$ $\pm0.006$. The uncertainty includes all statistical and systematic contributions.
3  Measured using ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit D}_{{s}}^{+}}$ . The effective lifetime is translated into a decay width of $\Gamma _{L}$ = $0.725$ $\pm0.014$ $\pm0.009$ ps${}^{-1}$.
4  Measured using ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ decays. There may still be CPV in the decay.
5  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.
6  Obtained from $\Delta \Gamma _{s}$ and $\Gamma _{s}$ fit with a correlation of 0.6.
7  Measured using the time-dependent angular analysis of ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}$ decays.
8  Uses ${{\mathit \phi}}{{\mathit \phi}}$ correlations from ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{(*)+}}{{\mathit D}_{{s}}^{(*)-}}$ .
References:
AAIJ 2023
arXiv:2206.03088 Measurement of $\tau_{L}$ using the $B_{s}^{0} \to J/\psi \eta$ decay mode
SIRUNYAN 2018BY
EPJ C78 457 Measurement of b hadron lifetimes in pp collisions at $\sqrt{s} =$ 8 TeV
AAIJ 2016AL
PL B762 484 Measurement of the ${{\mathit B}_{{s}}^{0}}$ ${{\mathit \eta}}$ Lifetime
AAIJ 2014R
PL B736 446 Effective Lifetime Measurements in the ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ and ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit K}^{-}}$ Decays
AAIJ 2014F
PRL 112 111802 Measurement of the ${{\overline{\mathit B}}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit D}_{{s}}^{+}}$ and ${{\overline{\mathit B}}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit D}^{-}}{{\mathit D}_{{s}}^{+}}$ Effective Lifetimes
AAIJ 2012R
PL B716 393 Measurement of the Effective ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ Lifetime
AAIJ 2012
PL B707 349 Measurement of the Effective ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ Lifetime
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 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
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