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 ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}^{*}{(892)}^{0}}$

INSPIRE   JSON  (beta) PDGID:
S042P4
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.463 {}^{+0.028}_{-0.040}}$ OUR AVERAGE
$0.455$ ${}^{+0.031}_{-0.029}$ ${}^{+0.014}_{-0.049}$
CHILIKIN
2013
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.48$ $\pm0.05$ $\pm0.02$ 1
AUBERT
2007AD
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.45$ $\pm0.11$ $\pm0.04$ 2
RICHICHI
2001
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.448$ ${}^{+0.040}_{-0.027}$ ${}^{+0.040}_{-0.053}$
MIZUK
2009
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
1  Obtained by combining the ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ modes.
2  Averages between charged and neutral ${{\mathit B}}$ mesons.
References