Abstract
AbstractThe weak decay process of $$\varOmega _c$$
Ω
c
to $$\varXi $$
Ξ
is calculated in the method of QCD light-cone sum rule. The decay width of $$\varOmega _c^0 \rightarrow \varXi ^- l^+ \nu _l$$
Ω
c
0
→
Ξ
-
l
+
ν
l
and its decay branching ratio are also calculated with the form factors from this work’s calculation. To the twist-6 distribution amplitudes, the form factors $$f_1=0.66\pm 0.02, f_2=-0.76\pm 0.03, g_1=0.06\pm 0.01$$
f
1
=
0.66
±
0.02
,
f
2
=
-
0.76
±
0.03
,
g
1
=
0.06
±
0.01
and $$g_2=-0.44\pm 0.01$$
g
2
=
-
0.44
±
0.01
are given at zero recoil point. The result of the semileptonic decay width of $$\varOmega _c^0 \rightarrow \varXi ^-l^+\nu _l$$
Ω
c
0
→
Ξ
-
l
+
ν
l
is $$\varGamma =(7.51\pm 0.36)\times 10^{-15}~\mathrm{{GeV}}$$
Γ
=
(
7.51
±
0.36
)
×
10
-
15
GeV
, and the prediction of the decay branching ratio $$Br(\varOmega _c^0\rightarrow \varXi ^-l^+\nu _l)=(3.06\pm 0.15)\times 10^{-3}$$
B
r
(
Ω
c
0
→
Ξ
-
l
+
ν
l
)
=
(
3.06
±
0.15
)
×
10
-
3
. These results fit well with other works, and the decay width and branching ratio are improved. This not too small branching ratio gives a good direction to explore this decay channel in the future experiments.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献