Rui-Yu Zhou, Lei Guo, Hai-Bing Fu, Wei Cheng, Xing-Gang Wu. The semileptonic decay within the LCSR approach under heavy quark effective field theory *[J]. Chinese Physics C, 2020, 44(1):

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- Chinese Physics C
- Vol. 44, Issue 1, (2020)
![(color online) The behavior of LCDA predicted by the BHL model, including the uncertainties of the input parameters. For comparison, we present the JLab fit [13], QCD SR [18], CZ form [46] and the asymptotic form [47].](/richHtml/cpc/2020/44/1/013101/img_1.jpg)
Fig. 1. (color online) The behavior of LCDA
predicted by the BHL model, including the uncertainties of the input parameters. For comparison, we present the JLab fit [13 ], QCD SR [18 ], CZ form [46 ] and the asymptotic form [47 ].
![(color online) The extrapolated TFFs calculated using the two correlators LCSR-/(left/right plots). The shaded bands are the uncertainties from the error sources. As a comparison, the predictions of lattice QCD [7], LCSR [14, 15], pQCD [49] and HPQCD [50] are also shown.](/richHtml/cpc/2020/44/1/013101/img_2.jpg)
Fig. 2. (color online) The extrapolated
TFFs
calculated using the two correlators LCSR-
/
(left/right plots). The shaded bands are the uncertainties from the error sources. As a comparison, the predictions of lattice QCD [7 ], LCSR [14 , 15 ], pQCD [49 ] and HPQCD [50 ] are also shown.
![(color online) The differential branching fractions for the two correlators LCSR-/(left/right plots). As a comparison, the BABAR data [53, 55] and the Belle data [54, 56] are also shown.](/Images/icon/loading.gif)
Fig. 3. (color online) The
differential branching fractions for the two correlators LCSR-
/
(left/right plots). As a comparison, the BABAR data [53 , 55 ] and the Belle data [54 , 56 ] are also shown.
|
Table 1. Parameters of twist-2 LCDA
determined from
[45 ].
|
Table 2. Uncertainties of TFFs
at
. The uncertainties of the total TFFs are summed up in quadrature.
|
Table 3. Different twist terms in
TFFs
for large recoils
|
Table 4. The fit parameters and quality of fit of LCSR-
and LCSR-
TFFs
|
Table 5. A comparison of
derived using various approaches.
|
Table 6. A comparison of the branching fraction of
with the experimental measurements. Both LCSR-
and LCSR-
predictions are consistent with the data.
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