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 _{\perp}/\Gamma $ in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit D}^{*-}}$

INSPIRE   PDGID:
S042DD
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.147 \pm0.019}$ OUR AVERAGE
$0.138$ $\pm0.024$ $\pm0.006$
KRONENBITTER
2012
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.158$ $\pm0.028$ $\pm0.006$
AUBERT
2009C
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.125$ $\pm0.043$ $\pm0.023$
VERVINK
2009
BELL Repl. by KRONENBITTER 2012
$0.143$ $\pm0.034$ $\pm0.008$
AUBERT
2007BO
BABR Repl. by AUBERT 2009C
$0.125$ $\pm0.044$ $\pm0.007$
AUBERT,BE
2005A
BABR Repl. by AUBERT 2007BO
$0.19$ $\pm0.08$ $\pm0.01$
MIYAKE
2005
BELL Repl. by VERVINK 2009
$0.063$ $\pm0.055$ $\pm0.009$
AUBERT
2003Q
BABR Repl. by AUBERT,BE 2005A
References