POLARIZATION IN ${{\boldsymbol B}_{{c}}^{+}}$ 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 ${{\boldsymbol B}_{{c}}^{+}}$ $\rightarrow$ ${{\boldsymbol J / \psi}}{{\boldsymbol D}_{{s}}^{*+}}$ INSPIRE search

VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.54 \pm0.15}$ OUR AVERAGE
$0.62$ $\pm0.24$ 1
AAD
2016H
ATLS ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.48$ $\pm0.20$ 2
AAIJ
2013AS
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
1  AAD 2016H measures 1 $−$ $\Gamma _{L}/\Gamma $ = $0.38$ $\pm0.24$.
2  AAIJ 2013AS measures 1 $−$ $\Gamma _{L}/\Gamma $ = $0.52$ $\pm0.20$.
  References:
AAD 2016H
EPJ C76 4 Study of the ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}$ and ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}_{{s}}^{*+}}$ Decays with the ATLAS Detector
AAIJ 2013AS
PR D87 112012 Observation of ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}_{{s}}^{+}}$ and ${{\mathit B}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}^{*+}_{{s}}}$ Decays