POLARIZATION IN ${{\mathit B}^{0}}$ DECAY

In decays involving two vector mesons, one can distinguish among the states in which meson polarizations are both longitudinal ($\mathit L$) or both are transverse and parallel ($\parallel$) or perpendicular ($\perp$) to each other with the parameters $\Gamma _{L}/\Gamma $, $\Gamma _{}/\Gamma $, and the relative phases $\phi _{\parallel}$ and $\phi _{\perp}$. See the definitions in the note on “Polarization in ${{\mathit B}}$ Decays” review in the ${{\mathit B}^{0}}$ Particle Listings.

$\Gamma _{L}/\Gamma $ in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit K}^{*}{(892)}^{0}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ (at low q${}^{2}$)

INSPIRE   PDGID:
S042P07
VALUE DOCUMENT ID TECN  COMMENT
$0.044$ $\pm0.026$ $\pm0.014$ 1
AAIJ
2020AO
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$0.16$ $\pm0.06$ $\pm0.03$ 2
AAIJ
2015Z
 LHCB Repl. by AAIJ 2020AO
1  Determined in the effective dielectron invariant mass range 0.0008 $<$q${}^{2}<$0.257GeV${}^{2}$/c${}^{4}$.
2  Determined in the effective dielectron invariant mass range $0.002<$q${}^{2}<1.120$ GeV${}^{2}$/c${}^{4}$.
References