POLARIZATION IN ${{\mathit B}^{+}}$ 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 _{\perp}/\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 ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit K}^{*}{(892)}^{+}}$ (1.1 $<$ q${}^{2}<$ 6.0 GeV${}^{2}$/c${}^{4}$)

INSPIRE   JSON  (beta) PDGID:
S041A49
VALUE DOCUMENT ID TECN  COMMENT
$0.59$ $\pm0.09$ $\pm0.03$ 1
AAIJ
2021J
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
1  The full set of CP-averaged angular observables is measured as a function of the q${}^{2}$. The measured $\Gamma _{L}$ is related to the polarisation of the ${{\mathit K}^{*}{(892)}^{+}}$.
References