ISOSPIN ASYMMETRY

$\Delta _{0-}$ is defined as
${\Gamma\mathrm {({{\overline{\mathit B}}^{0}} \rightarrow {{\mathit f}_{{{d}}}})}–\Gamma\mathrm {({{\mathit B}^{-}} \rightarrow {{\mathit f}_{{{u}}}})}\over \Gamma\mathrm {({{\overline{\mathit B}}^{0}} \rightarrow {{\mathit f}_{{{d}}}})}+\Gamma\mathrm {({{\mathit B}^{-}} \rightarrow {{\mathit f}_{{{u}}}})}}$,
the isospin asymmetry of inclusive neutral and charged B decay.

$\Delta _{0-}(B({{\mathit B}}$ $\rightarrow$ ${{\mathit K}^{(*)}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$))

INSPIRE   JSON  (beta) PDGID:
S049IA5
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ -0.45 \pm0.17}$ OUR AVERAGE  Error includes scale factor of 1.7.
$-0.64$ ${}^{+0.15}_{-0.14}$ $\pm0.03$ 1, 2
AUBERT
2009T
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.30$ ${}^{+0.12}_{-0.11}$ $\pm0.08$ 3
WEI
2009A
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
1  For 0.1 $<$ ${{\mathit m}^{2}}_{{{\mathit \ell}^{+}} {{\mathit \ell}^{-}}}<$ 7.02 GeV${}^{2}$/c${}^{4}$.
2  Assumes equal production of ${{\mathit B}^{+}}$ and ${{\mathit B}^{0}}$ at the ${{\mathit \Upsilon}{(4S)}}$.
3  For q${}^{2}<$ 8.68 GeV${}^{2}$/c${}^{2}$.
References