See ${{\mathit B}^{\pm}}/{{\mathit B}^{0}}/{{\mathit B}_{{s}}^{0}}/{{\mathit b}}$-baryon ADMIXTURE section for data on ${{\mathit B}}$-hadron mean life averaged over species of bottom particles. “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 and asymmetric lifetime errors.

VALUE ($ 10^{-12} $ s) EVTS DOCUMENT ID TECN  COMMENT $\bf{ (1638 \pm4) \times 10^{-3}}$ OUR EVALUATION $1.637$ $\pm0.004$ $\pm0.003$ AAIJ 2014 E LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV $1.639$ $\pm0.009$ $\pm0.009$ 1 AALTONEN 2011 CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $1.663$ $\pm0.023$ $\pm0.015$ 2 AALTONEN 2011 B CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $1.635$ $\pm0.011$ $\pm0.011$ 3 ABE 2005 B BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$ $1.624$ $\pm0.014$ $\pm0.018$ 4 ABDALLAH 2004 E DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.636$ $\pm0.058$ $\pm0.025$ 5 ACOSTA 2002 C CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.8 TeV $1.673$ $\pm0.032$ $\pm0.023$ 6 AUBERT 2001 F BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$ $1.648$ $\pm0.049$ $\pm0.035$ 7 BARATE 2000 R ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.643$ $\pm0.037$ $\pm0.025$ 8 ABBIENDI 1999 J OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.637$ $\pm0.058$ ${}^{+0.045}_{-0.043}$ 7 ABE 1998 Q CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at $1.8$ TeV $1.66$ $\pm0.06$ $\pm0.03$ 8 ACCIARRI 1998 S L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.66$ $\pm0.06$ $\pm0.05$ 8 ABE 1997 J SLD ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.58$ ${}^{+0.21}_{-0.18}$ ${}^{+0.04}_{-0.03}$ 94 5 BUSKULIC 1996 J ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.61$ $\pm0.16$ $\pm0.12$ 7, 9 ABREU 1995 Q DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.72$ $\pm0.08$ $\pm0.06$ 10 ADAM 1995 DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.52$ $\pm0.14$ $\pm0.09$ 7 AKERS 1995 T OPAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1.695$ $\pm0.026$ $\pm0.015$ 6 ABE 2002 H BELL Repl. by ABE 2005B $1.68$ $\pm0.07$ $\pm0.02$ 5 ABE 1998 B CDF Repl. by ACOSTA 2002C $1.56$ $\pm0.13$ $\pm0.06$ 7 ABE 1996 C CDF Repl. by ABE 1998Q $1.58$ $\pm0.09$ $\pm0.03$ 11 BUSKULIC 1996 J ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.58$ $\pm0.09$ $\pm0.04$ 7 BUSKULIC 1996 J ALEP Repl. by BARATE 2000R $1.70$ $\pm0.09$ 12 ADAM 1995 DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.61$ $\pm0.16$ $\pm0.05$ 148 5 ABE 1994 D CDF Repl. by ABE 1998B $1.30$ ${}^{+0.33}_{-0.29}$ $\pm0.16$ 92 7 ABREU 1993 D DLPH Sup. by ABREU 1995Q $1.56$ $\pm0.19$ $\pm0.13$ 134 10 ABREU 1993 G DLPH Sup. by ADAM 1995 $1.51$ ${}^{+0.30}_{-0.28}$ ${}^{+0.12}_{-0.14}$ 59 7 ACTON 1993 C OPAL Sup. by AKERS 1995T $1.47$ ${}^{+0.22}_{-0.19}$ ${}^{+0.15}_{-0.14}$ 77 7 BUSKULIC 1993 D ALEP Sup. by BUSKULIC 1996J 1  Measured mean life using fully reconstructed decays ( ${{\mathit J / \psi}}{{\mathit K}^{(*)}}$ ). 2  Measured using ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit \pi}^{-}}$ with ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ events that were selected using a silicon vertex trigger. 3  Measurement performed using a combined fit of $\mathit CP$-violation, mixing and lifetimes. 4  Measurement performed using an inclusive reconstruction and ${{\mathit B}}$ flavor identification technique. 5  Measured mean life using fully reconstructed decays. 6  Events are selected in which one ${{\mathit B}}$ meson is fully reconstructed while the second ${{\mathit B}}~$meson is reconstructed inclusively. 7  Data analyzed using ${{\mathit D}}$ / ${{\mathit D}^{*}}{{\mathit \ell}}$ X event vertices. 8  Data analyzed using charge of secondary vertex. 9  ABREU 1995Q assumes B( ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit D}^{**-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{\mathit \ell}}}}}$ ) = $3.2$ $\pm1.7\%$. 10  Data analyzed using vertex-charge technique to tag ${{\mathit B}}$ charge. 11  Combined result of ${{\mathit D}}$/ ${{\mathit D}^{*}}{{\mathit \ell}}$ X analysis and fully reconstructed ${{\mathit B}}$ analysis. 12  Combined ABREU 1995Q and ADAM 1995 result.

References:

AAIJ 2014E JHEP 1404 114 Measurements of the ${{\mathit B}^{+}},{{\mathit B}^{0}},{{\mathit B}_{{s}}^{0}}$ Meson and ${{\mathit \Lambda}_{{b}}^{0}}$ Baryon Lifetimes AALTONEN 2011B PR D83 032008 Measurement of the ${{\mathit B}^{-}}$ Lifetime using a Simulation Free Approach for Trigger Bias Correction AALTONEN 2011 PRL 106 121804 Measurement of ${\mathit {\mathit b}}$ Hadron Lifetimes in Exclusive Decays Containing a ${{\mathit J / \psi}}$ in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV ABE 2005B PR D71 072003 Improved Measurement of $\mathit CP$ Violation Parameters sin2$\phi _{1}$ and $\vert {{\mathit \lambda}}\vert $, ${{\mathit B}}$ Meson Lifetimes, and ${{\mathit B}^{0}}−{{\overline{\mathit B}}^{0}}$ Mixing Parameter $\Delta {{\mathit m}_{{d}}}$ Also PR D71 079903 (errat.) Publisher's Note to ABE 2005B. Improved Measurement of $\mathit CP$ Violation Parameters sin2$\phi _{1}$ and $\vert \lambda \vert $, ${{\mathit B}}$ Meson Lifetimes, and ${{\mathit B}^{0}}−{{\overline{\mathit B}}^{0}}$ Mixing Parameter $\Delta {\mathit m}_{{{\mathit d}}}$ ABDALLAH 2004E EPJ C33 307 A Precise Measurement of the ${{\mathit B}^{+}}$, ${{\mathit B}^{0}}$ and Mean b-hadron Lifetime with the DELPHI Detector at LEP I ABE 2002H PRL 88 171801 Precise Measurement of ${{\mathit B}}$ Meson Lifetimes with Hadronic Decay Final States ACOSTA 2002C PR D65 092009 Measurement of ${{\mathit B}}$ Meson Lifetimes using Fully Reconstructed ${{\mathit B}}$ Decays Produced in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.8 TeV AUBERT 2001F PRL 87 201803 Measurement of the ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ Meson Lifetimes with Fully Reconstructed Hadronic Final States BARATE 2000R PL B492 275 Measurement of the ${{\overline{\mathit B}}^{0}}$ and ${{\mathit B}^{-}}$ Meson Lifetimes ABBIENDI 1999J EPJ C12 609 Measurement of the ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ Lifetimes and Search for $\mathit CP(T)$ Violation using Reconstructed Secondary Vertices ABE 1998B PR D57 5382 Measurement of ${{\mathit B}}$ Hadron Lifetimes using ${{\mathit J / \psi}}$ Final States at CDF ABE 1998Q PR D58 092002 Improved Measurement of the ${{\mathit B}^{-}}$ and ${{\overline{\mathit B}}^{0}}$ Meson Lifetimes using Semileptonic Decays ACCIARRI 1998S PL B438 417 Upper Limit on the Lifetime Difference of Short- and Long-Lived ${{\mathit B}_{{s}}^{0}}$ Mesons ABE 1997J PRL 79 590 Measurement of the ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ Lifetimes using Topological Reconstruction of Inclusive and Semileptonic Decays ABE 1996C PRL 76 4462 Measurement of the ${{\mathit B}^{-}}$ and ${{\overline{\mathit B}}^{0}}$ Meson Lifetimes using Semileptonic Decays BUSKULIC 1996J ZPHY C71 31 Improved Measurement of the ${{\overline{\mathit B}}^{0}}$ and ${{\mathit B}^{-}}$ Meson Lifetimes ABREU 1995Q ZPHY C68 13 A Measurement of ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ Lifetimes using ${{\overline{\mathit D}}}{{\mathit \ell}^{+}}$ Events ADAM 1995 ZPHY C68 363 Lifetimes of Charged and Neutral ${{\mathit B}}$ Hadrons using Event Topology AKERS 1995T ZPHY C67 379 Improved Measurements of the ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ Meson Lifetimes ABE 1994D PRL 72 3456 Measurement of the ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ Meson Lifetimes ABREU 1993G PL B312 253 A Measurement of the Mean Lifetimes of Charged and Neutral ${{\mathit B}}$ Hadrons ABREU 1993D ZPHY C57 181 A Measurement of ${{\mathit B}}$ Meson Production and Lifetime using ${{\mathit D}}{{\mathit \ell}^{-}}$ Events in ${{\mathit Z}^{0}}$ Decays ACTON 1993C PL B307 247 Measurement of the ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ Lifetime BUSKULIC 1993D PL B307 194 Measurement of the ${{\overline{\mathit B}}^{0}}$ and ${{\mathit B}^{-}}$ Meson Lifetime Also PL B325 537 (erratum) Erratum: BUSKULIC 1993D Measurement of the ${{\overline{\mathit B}}^{0}}$ and ${{\mathit B}^{-}}$ Meson Lifetime