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 _{\mathit L}/\Gamma $ in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit K}^{*0}}{{\overline{\mathit K}}^{*0}}$

INSPIRE   JSON  (beta) PDGID:
S042PP6
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.74 \pm0.05}$ OUR AVERAGE
$0.724$ $\pm0.051$ $\pm0.016$ 1
AAIJ
2019L
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7 and 8 TeV
$0.80$ ${}^{+0.10}_{-0.12}$ $\pm0.06$
AUBERT
2008I
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
1  Untagged and time-integrated analysis within 150 MeV of the ${{\mathit K}^{*0}}$ mass.
References