# ${{\boldsymbol B}_{{c}}^{+}}$ MEAN LIFE INSPIRE search

OUR EVALUATION'' is an average using rescaled values of the data listed below. The average and rescaling were performed by the Heavy Flavor Averaging Group (HFLAV) and are described at https://hflav.web.cern.ch/. The averaging/rescaling procedure takes into account correlations between the measurements.
VALUE ($10^{-12}$ s) DOCUMENT ID TECN  COMMENT
$\bf{ 0.510 \pm0.009}$ OUR EVALUATION
$\bf{ 0.510 \pm0.009}$ OUR AVERAGE
$0.541$ $\pm0.026$ $\pm0.014$ 1
 2018 BY
CMS ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$0.5134$ $\pm0.0110$ $\pm0.0057$ 2, 3
 2015 G
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.509$ $\pm0.008$ $\pm0.012$ 4
 2014 G
LHCB ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$0.452$ $\pm0.048$ $\pm0.027$ 3
 2013
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$0.448$ ${}^{+0.038}_{-0.036}$ $\pm0.032$ 5
 2009 H
D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$0.463$ ${}^{+0.073}_{-0.065}$ $\pm0.036$ 5
 2006 O
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$0.46$ ${}^{+0.18}_{-0.16}$ $\pm0.03$ 5
 1998 M
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ $1.8$ TeV
1  The lifetime is measured using the decays ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}$ and ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$ .
2  Also measures the width difference $\Delta \Gamma$ = ${\Gamma}_{{\mathit B}_{{c}}^{+}}−$ ${\Gamma}_{{\mathit B}^{+}}$ = $4.46$ $\pm0.14$ $\pm0.07$ mm${}^{-1}~$c.
3  Uses fully reconstructed ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}$ decays.
4  Measured using ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}{{\mathit X}}$ decays.
5  The lifetime is measured from the ${{\mathit J / \psi}}{{\mathit e}}$ decay vertices.
References:
 SIRUNYAN 2018BY
EPJ C78 457 Measurement of b hadron lifetimes in pp collisions at $\sqrt{s} =$ 8 TeV
 AAIJ 2015G
PL B742 29 Measurement of the Lifetime of the ${{\mathit B}_{{c}}^{+}}$ Meson using the Decay Mode
 AAIJ 2014G
EPJ C74 2839 Measurement of the ${{\mathit B}_{{c}}^{+}}$ Meson Lifetime using ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}{{\mathit X}}$ Decays
 AALTONEN 2013
PR D87 011101 Measurement of the ${{\mathit B}_{{c}}^{-}}$ Meson Lifetime in the Decay ${{\mathit B}_{{c}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{-}}$
 ABAZOV 2009H
PRL 102 092001 Measurement of the Lifetime of the ${{\mathit B}_{{c+-}}}$ Meson in the Semileptonic Decay Channel
 ABULENCIA 2006O
PRL 97 012002 Measurement of the ${{\mathit B}_{{c}}^{+}}$ Meson Lifetime using the Decay Mode ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit e}^{+}}{{\mathit \nu}_{{e}}}$
 ABE 1998M
PRL 81 2432 Observation of ${{\mathit B}_{{c}}}$ Mesons in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.8 TeV