BOTTOM MESONS
($\mathit B$ = $\pm1$)
${{\mathit B}^{+}}$ = ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit b}}}$, ${{\mathit B}^{0}}$ = ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit b}}}$, ${{\overline{\mathit B}}^{0}}$ = ${\mathit {\overline{\mathit d}}}$ ${\mathit {\mathit b}}$, ${{\mathit B}^{-}}$ = ${\mathit {\overline{\mathit u}}}$ ${\mathit {\mathit b}}$,
similarly for ${{\mathit B}^{*}}$'s
INSPIRE   JSON PDGID:
S051

${{\mathit B}^{\pm}}/{{\mathit B}^{0}}/{{\mathit B}_{{{s}}}^{0}}/{{\mathit b}}$-baryon ADMIXTURE

 
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${{\mathit B}^{\pm}}/{{\mathit B}^{0}}/{{\mathit B}_{{{s}}}^{0}}/{{\mathit b}}$-baryon ADMIXTURE MEAN LIFE ($1.5673$ $\pm0.0029$) $ \times 10^{-12}$ s 
 
CHARGED ${{\mathit b}}$-HADRON ADMIXTURE MEAN LIFE ($1.72$ $\pm0.10$) $ \times 10^{-12}$ s 
 
NEUTRAL ${{\mathit b}}$-HADRON ADMIXTURE MEAN LIFE ($1.58$ $\pm0.14$) $ \times 10^{-12}$ s 
 
MEAN LIFE RATIO ${\mathit \tau}_{\mathrm {charged~{{\mathit b}}-hadron}}/{\mathit \tau}_{\mathrm {neutral~{{\mathit b}}-hadron}}$ $1.09$ $\pm0.13$  
 
$\vert \Delta {\mathit \tau}_{{{\mathit b}}}\vert /{\mathit \tau}_{\mathrm {{{\mathit b}},{{\overline{\mathit b}}}}}$ $-0.001$ $\pm0.014$  
 
$\chi _{\mathit b}$ AT HIGH ENERGY $0.1259$ $\pm0.0042$  
 
▸  $\mathit CP$ VIOLATION PARAMETERS in semileptonic ${\mathit {\mathit b}}$-hadron decays.
▸  PRODUCTION ASYMMETRIES
The branching fraction measurements are for an admixture of ${{\mathit B}}$ mesons and baryons at energies above the ${{\mathit \Upsilon}{(4S)}}$. Only the highest energy results (LHC, LEP, Tevatron, S${{\mathit p}}{{\overline{\mathit p}}}$S) are used in the branching fraction averages. In the following, we assume that the production fractions are the same at the LHC, LEP, and at the Tevatron.
For inclusive branching fractions, $\mathit e.g.,$ ${{\mathit B}}$ $\rightarrow$ ${{\mathit D}^{\pm}}$ anything, the values usually are multiplicities, not branching fractions. They can be greater than one.
The modes below are listed for a ${{\overline{\mathit b}}}$ initial state. ${{\mathit b}}~$modes are their charge conjugates. Reactions indicate the weak decay vertex and do not include mixing.
Mode  
Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
▸  The production fractions for weakly decaying PRODUCTION FRACTIONS ${{\mathit b}}$-hadrons at high energy have been calculated from the best values of mean lives, mixing parameters, and branching fractions in this edition by the Heavy Flavor Averaging Group (HFLAV) as described in the note ``${{\mathit B}^{0}}-{{\overline{\mathit B}}^{0}}$ Mixing'' in the ${{\mathit B}^{0}}$ Particle Listings. We no longer provide world averages of the ${{\mathit b}}$-hadron production fractions, where results from LEP, Tevatron and LHC are averaged together; indeed the available data (from CDF and LHCb) shows that the fractions depend on the kinematics (in particular the $p_T$) of the produced ${{\mathit b}}$ hadron. Hence we would like to list the fractions in ${{\mathit Z}}$ decays instead, which are well-defined physics observables. The production fractions in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at the Tevatron are also listed at the end of the section. Values assume
▸  DECAY MODES
▸  Charmed meson and baryon modes
▸  Charmonium modes
▸  ${{\mathit K}}$ or ${{\mathit K}^{*}}$ modes
▸  Pion modes
▸  Baryon modes
▸  Other modes
▸  $\Delta \mathit B$ = 1 weak neutral current ($\mathit B1$) modes
[1] An ${{\mathit \ell}}$ indicates an ${{\mathit e}}$ or a ${{\mathit \mu}}$ mode, not a sum over these modes.
[2] ${{\mathit D}_{{{j}}}}$ represents an unresolved mixture of pseudoscalar and tensor ${{\mathit D}^{**}}$ (${{\mathit P}}$-wave) states.
[3] The value is for the sum of the charge states or particle/antiparticle states indicated.
[4] Inclusive branching fractions have a multiplicity definition and can be greater than 100$\%$.