FORWARD-BACKWARD ASYMMETRIES

The forward-backward assymmetry is defined as A$_{FB}({{\mathit \Lambda}_{{{b}}}^{0}}$) = [ N(F) $−$ N(B)] $/$ [N(F) + N(B) ], where the forward (F) direction corresponds to a particle (${{\mathit \Lambda}_{{{b}}}^{0}}$ or ${{\mathit \Lambda}_{{{b}}}^{-}}$) sharing valence quark flavors with a beam particle with the same sign of rapidity.

$\Delta (A{}^{{{\mathit \ell}}}_{FB}({{\mathit \mu}}{{\mathit \mu}}$)) in ${{\mathit \Lambda}_{{{b}}}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

INSPIRE   JSON  (beta) PDGID:
S040A21
Difference of asymmetries A${}^{{{\mathit \ell}}}_{FB}({{\mathit \mu}}{{\mathit \mu}}$) in ${{\mathit \Lambda}_{{{b}}}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ between ${{\mathit \Lambda}_{{{b}}}}$ and ${{\overline{\mathit \Lambda}}_{{{{b}}}}}$ decays
VALUE DOCUMENT ID TECN  COMMENT
$-0.05$ $\pm0.09$ $\pm0.03$
AAIJ
2018AO
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
References