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:
S041

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

$I(J^P)$ = $1/2(0^{-})$ 
Quantum numbers not measured. Values shown are quark-model predictions. See also the ${{\mathit B}^{\pm}}/{{\mathit B}^{0}}$ ADMIXTURE and ${{\mathit B}^{\pm}}/{{\mathit B}^{0}}/{{\mathit B}_{{{s}}}^{0}}/{{\mathit b}}$-baryon ADMIXTURE sections.
Expand/Collapse All
${{\mathit B}^{\pm}}$ MASS $5279.41$ $\pm0.07$ MeV 
 
${{\mathit B}^{\pm}}$ MEAN LIFE ($1.638$ $\pm0.004$) $ \times 10^{-12}$ s 
 
${\mathit \tau}_{{{\mathit B}^{+}}}/{\mathit \tau}_{{{\mathit B}^{-}}}$ $1.002$ $\pm0.004$  
 
▸  POLARIZATION IN ${{\mathit B}^{+}}$ DECAY
▸  $\mathit CP$ VIOLATION
▸  CP VIOLATION PARAMETERS IN ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit D}}{{\mathit K}^{+}}$ AND SIMILAR DECAYS
▸  PARTIAL BRANCHING FRACTIONS
▸  FORWARD-BACKWARD ASYMMETRIES
${{\mathit B}^{-}}$ modes are charge conjugates of the modes below. Modes which do not identify the charge state of the ${{\mathit B}}$ are listed in the ${{\mathit B}^{\pm}}/{{\mathit B}^{0}}$ ADMIXTURE section.

The branching fractions listed below assume 50$\%$ ${{\mathit B}^{0}}{{\overline{\mathit B}}^{0}}$ and 50$\%$ ${{\mathit B}^{+}}{{\mathit B}^{-}}$ production at the ${{\mathit \Upsilon}{(4S)}}$. We have attempted to bring older measurements up to date by rescaling their assumed ${{\mathit \Upsilon}{(4S)}}$ production ratio to 50:50 and their assumed ${{\mathit D}}$, ${{\mathit D}_{{{s}}}}$, ${{\mathit D}^{*}}$, and ${{\mathit \psi}}$ branching ratios to current values whenever this would affect our averages and best limits significantly.
Indentation is used to indicate a subchannel of a previous reaction. All resonant subchannels have been corrected for resonance branching fractions to the final state so the sum of the subchannel branching fractions can exceed that of the final state.
For inclusive branching fractions, $\mathit e.g.,$ ${{\mathit B}}$ $\rightarrow$ ${{\mathit D}^{\pm}}{{\mathit X}}$, the values usually are multiplicities, not branching fractions. They can be greater than one.
Mode  
Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
▸  Semileptonic and leptonic modes
▸  Inclusive modes
▸  ${{\mathit D}}$, ${{\mathit D}^{*}}$, or ${{\mathit D}_{{{s}}}}$ modes
▸  Charmonium modes
▸  ${{\mathit K}}$ or ${{\mathit K}^{*}}$ modes
▸  Light unflavored meson modes
▸  ${{\mathit h}^{\pm}}$ = ${{\mathit K}^{\pm}}$ or ${{\mathit \pi}^{\pm}}$ Charged particle (${{\mathit h}^{\pm}}$) modes
▸  Baryon modes
▸  Lepton Family number ($\mathit LF$) or Lepton number ($\mathit L$) or Baryon number ($\mathit B$) violating modes, or/and $\Delta \mathit B$ = 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] An $\mathit CP(\pm1$) indicates the $\mathit CP=+1$ and $\mathit CP=-1$ eigenstates of the ${{\mathit D}^{0}}-{{\overline{\mathit D}}^{0}}$ system.
[3] ${{\mathit D}}$ denotes ${{\mathit D}^{0}}$ or ${{\overline{\mathit D}}^{0}}$.
[4] ${{\mathit D}_{{{{CP+}}}}^{*0}}$ decays into ${{\mathit D}^{0}}{{\mathit \pi}^{0}}$ with the ${{\mathit D}^{0}}$ reconstructed in $\mathit CP$-even eigenstates ${{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$.
[5] ${{\overline{\mathit D}}^{**}}$ represents an excited state with mass 2.2 $<$ M $<$ 2.8 GeV/c${}^{2}$.
[6] ${{\mathit \chi}_{{{c1}}}{(3872)}^{+}}$ is a hypothetical charged partner of the ${{\mathit \chi}_{{{c1}}}{(3872)}}$.
[7] ${{\mathit \Theta}{(1710)}^{++}}$ is a possible narrow pentaquark state and ${{\mathit G}{(2220)}}$ is a possible glueball resonance.
[8] (${{\overline{\mathit \Lambda}}_{{{c}}}^{-}}{{\mathit p}})_{s}$ denotes a low-mass enhancement near 3.35 GeV/c${}^{2}$.
Constrained Fit information