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${{\mathit B}^{\pm}}$ MEAN LIFE

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S041T

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.

VALUE ($ 10^{-12} $ s) EVTS DOCUMENT ID TECN  COMMENT $\bf{ (1638 \pm4) \times 10^{-3}}$ OUR EVALUATION  $~~$(Produced by HFLAV) $1.637$ $\pm0.004$ $\pm0.003$ 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.

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