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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$_{FB}$( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Lambda}}$ )

INSPIRE   PDGID:

S040FBL

VALUE DOCUMENT ID TECN  COMMENT $0.04$ $\pm0.07$ $\pm0.02$ 1 ABAZOV 2015 I D0 ${{\mathit p}}{{\mathit p}}$ at 1.96 TeV 1  The measured asymmetry integrated over rapidity y in the range of 0.1 $<$ $\vert $y$\vert $ $<$ 2.0.

References:

ABAZOV 2015I PR D91 072008 Measurement of the Forward-Backward Asymmetry in ${{\mathit \Lambda}_{{b}}^{0}}$ and ${{\overline{\mathit \Lambda}}_{{b}}^{0}}$ Baryon Production in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV

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