Chinese Physics C, Volume. 44, Issue 1, (2020)
The semileptonic decay within the LCSR approach under heavy quark effective field theory *
Figures & Tables(9)
![(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].](/Images/icon/loading.gif){kind=icon}
Fig. 1. (color online) The behavior of LCDA
Fig. 2. (color online) The extrapolated
Fig. 3. (color online) The
Table 1. Parameters of twist-2 LCDA
45 ].View tableView in ArticleTable 1. Parameters of twist-2 LCDA
45 ].A β B 0.039 23.50 0.61 0.075 0.112 24.63 0.59 0.010 0.185 23.50 0.63 0.141
Table 2. Uncertainties of TFFs
Table 2. Uncertainties of TFFs
Total
Table 3. Different twist terms in
Table 3. Different twist terms in
Twist-2 Twist-3 Twist-4 Central 0.284 − −0.009 0.276 0.153 0.134 −0.004 0.282
Table 4. The fit parameters and quality of fit of LCSR-
Table 4. The fit parameters and quality of fit of LCSR-
−1.600 −1.453 − 0.03% −1.155 2.075 −3.377 0.01% −1.309 −1.757 − 0.50% −1.197 0.656 −0.611 0.06%
Table 5. A comparison of
Table 5. A comparison of
Exclusive decays LCSR- (This work) LCSR- (This work) RBC/UKQCD [7] Fermilab/MILC [8] pQCD [9] -meson LCSR [13] Imsong 2014 (LCSR) [15] BABAR 2012 [53] Belle 2013 [54] CKM fitter [57] UT fitter [58] FLAG 2016 [59] HFAG 2016 [60]
Table 6. A comparison of the branching fraction of
Table 6. A comparison of the branching fraction of
Exclusive decays LCSR- (This work) LCSR- (This work) PDG [40] BABAR 2012 [53] Belle 2013 [54] BABAR 2010 [55] Belle 2010 [56] CLEO [61] HFAG 2016 [60]
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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):
Paper Information
Category: Particles and fields
Received: Oct. 8, 2019
Accepted: --
Published Online: Sep. 29, 2020
The Author Email: Zhou Rui-Yu (zhoury@cqu.edu.cn), Guo Lei (guoleicqu@cqu.edu.cn), Fu Hai-Bing (fuhb@cqu.edu.cn), Cheng Wei (chengw@cqu.edu.cn), Wu Xing-Gang (wuxg@cqu.edu.cn)
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