${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit D}^{*-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}$ FORM FACTORS

$\mathit R_{2}$ (form factor ratio $\sim{}$ $\mathit A_{2}/\mathit A_{1}$)

INSPIRE   PDGID:
S042RA
$\mathit R_{2}$ (form factor ratio $\sim{}$ $\mathit A_{2}/\mathit A_{1}$)
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.84 \pm0.04}$ OUR AVERAGE  Error includes scale factor of 1.8.
$0.852$ $\pm0.021$ $\pm0.006$ 1
WAHEED
2019
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.66$ $\pm0.05$ $\pm0.09$
AUBERT
2009A
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.71$ $\pm0.22$ $\pm0.07$
DUBOSCQ
1996
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.864$ $\pm0.024$ $\pm0.008$ 1
DUNGEL
2010
BELL Repl. by WAHEED 2019
$0.827$ $\pm0.038$ $\pm0.022$
AUBERT
2008R
 BABR Repl. by AUBERT 2009A
$0.885$ $\pm0.040$ $\pm0.026$
AUBERT,B
2006Z
 BABR Repl. by AUBERT 2008R
1  Uses fully reconstructed ${{\mathit D}^{*-}}{{\mathit \ell}^{+}}{{\mathit \nu}}$ events (${{\mathit \ell}}$ = ${{\mathit e}}$ or ${{\mathit \mu}}$).
References