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.

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

INSPIRE   PDGID:
S040A02
VALUE DOCUMENT ID TECN  COMMENT
$-0.39$ $\pm0.04$ $\pm0.01$ 1
AAIJ
2018AP
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.05$ $\pm0.09$ $\pm0.03$ 2
AAIJ
2015AE
 LHCB Repl. by AAIJ 2018AP.
1  The measurement covers 15.0 $<$ q${}^{2}$ $<$ 20.0 GeV${}^{2}$/c${}^{4}$.
2  AAIJ 2015AE measurement covers 15.0 $<$ q${}^{2}$ $<$ 20.0 GeV${}^{2}$/c${}^{4}$.
References