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 ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{*+}}{{\mathit D}^{*-}}$

INSPIRE   JSON  (beta) PDGID:
S042P3
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.574 \pm0.014}$ OUR AVERAGE
$0.578$ $\pm0.010$ $\pm0.011$ 1
AAIJ
2021S
 LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$0.519$ $\pm0.050$ $\pm0.028$ 2
AUBERT
2003I
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.506$ $\pm0.139$ $\pm0.036$
AHMED
2000B
 CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
1  AAIJ 2021S uses ${{\mathit D}_{{{s}}}^{*+}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{+}}{{\mathit \gamma}}$ decays.
2  Measurement performed using partial reconstruction of ${{\mathit D}^{*-}}$ decay.
References