POLARIZATION IN ${{\mathit B}}$ 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.

F$_{L}({{\mathit B}}$ $\rightarrow$ ${{\mathit K}^{*}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$) (1.0 $<$ q${}^{2}<$ 6.0 GeV${}^{2}$/c${}^{4}$)

INSPIRE   JSON  (beta) PDGID:
S049FL9
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.67 \pm0.07}$ OUR AVERAGE  Error includes scale factor of 2.8.  See the ideogram below.
$0.700$ $\pm0.025$ $\pm0.013$ 1
AAIJ
2020Y
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$0.72$ $\pm0.06$
KHACHATRYAN
2016D
CMS ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.24$ ${}^{+0.09}_{-0.08}$ $\pm0.02$ 2
LEES
2016C
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.65$ ${}^{+0.08}_{-0.07}$ $\pm0.03$
AAIJ
2013Y
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV, ${{\mathit K}^{*0}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$0.69$ ${}^{+0.19}_{-0.21}$ $\pm0.08$
AALTONEN
2012I
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$0.67$ $\pm0.23$ $\pm0.05$
WEI
2009A
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.690$ ${}^{+0.035}_{-0.036}$ $\pm0.017$ 1
AAIJ
2016B
LHCB Repl. by AAIJ 2020Y
$0.68$ $\pm0.10$ $\pm0.02$
CHATRCHYAN
2013BL
CMS Repl. by KHACHATRYAN 2016D
$0.55$ $\pm0.10$ $\pm0.03$
AAIJ
2012U
LHCB Repl. by AAIJ 2013Y
$0.50$ ${}^{+0.27}_{-0.30}$ $\pm0.03$
AALTONEN
2011L
CDF Repl. by AALTONEN 2012I
1  Measured in 1.1 $<$ q${}^{2}<$ 6.0 GeV${}^{2}$/c${}^{4}$.
2  Measured by combining ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$ with ${{\mathit e}}$ and ${{\mathit \mu}}$ as leptons. Results are also provided separately for ${{\mathit B}^{0}}$ and ${{\mathit B}^{+}}$.

           F$_{L}({{\mathit B}}$ $\rightarrow$ ${{\mathit K}^{*}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$) (1.0 $<$ q${}^{2}<$ 6.0 GeV${}^{2}$/c${}^{4}$)
References