Author:
Sun Zhi-Jie,Zhang Zhi-Qing,Yang You-Ya,Yang Hao
Abstract
AbstractIn addition to the strong and electromagnetic decay modes, the $$\psi (1S,2S)$$
ψ
(
1
S
,
2
S
)
and $$\eta _{c}(1S,2S)$$
η
c
(
1
S
,
2
S
)
can also decay via the weak interaction. Such weak decays can be detected by the high-luminosity heavy-flavor experiments. At present, some of the semileptonic and nonleptonic $$J/\Psi $$
J
/
Ψ
weak decays have been measured at BESIII. Researching for these charmonium weak decays to $$D_{(s)}$$
D
(
s
)
meson can provide a platform to check of the standard model (SM) and probe new physics (NP). So we investigate the semileptonic and nonleptonic weak decays of $$\psi (1S,2S)$$
ψ
(
1
S
,
2
S
)
and $$\eta _{c}(1S,2S)$$
η
c
(
1
S
,
2
S
)
to $$D_{(s)}$$
D
(
s
)
within the covariant light-front quark model (CLFQM). With form factors of the transitions $$\psi (1S,2S)\rightarrow D_{(s)}$$
ψ
(
1
S
,
2
S
)
→
D
(
s
)
and $$\eta _{c}(1S,2S)\rightarrow D_{(s)}$$
η
c
(
1
S
,
2
S
)
→
D
(
s
)
calculated under the CLFQM, we predict and discuss some physical observables, such as the branching ratios, the longitudinal polarizations $$f_{L}$$
f
L
and the forward–backward asymmetries $$A_{FB}$$
A
FB
. One can find that the Cabibbo-favored semi-leptonic decay channels $$\psi (1\,S,2\,S)\rightarrow D_{s}^{-}\ell ^{+}\nu _{\ell }$$
ψ
(
1
S
,
2
S
)
→
D
s
-
ℓ
+
ν
ℓ
with $$\ell =e,\mu $$
ℓ
=
e
,
μ
and the nonleptonic decay modes $$\psi (1S,2S)\rightarrow D_{s}^{-}\rho ^{+}$$
ψ
(
1
S
,
2
S
)
→
D
s
-
ρ
+
have relatively large branching ratios of the order $$\mathcal {O}(10^{-9})$$
O
(
10
-
9
)
, which are most likely to be accessible at the future high-luminosity experiments.
Funder
the National Natural Science Foundation of China under Grant
Publisher
Springer Science and Business Media LLC
Reference40 articles.
1. K.K. Sharma, R.C. Verma, Int. J. Mod. Phys. A 14, 937 (1999). arXiv:hep-ph/9801202
2. R.C. Verma, A.N. Kamal, A. Czarnecki, Phys. Lett. B 252, 690 (1990)
3. Y.M. Wang, H. Zou, Z.T. Wei, X.Q. Li, C.D. Lu, Eur. Phys. J. C 54, 107 (2008). arXiv:0707.1138 [hep-ph]
4. Y.M. Wang, H. Zou, Z.T. Wei, X.Q. Li, C.D. Lu, Eur. Phys. J. C 55, 607 (2008). arXiv:0802.2762 [hep-ph]
5. J. Sun, Y. Yang, J. Huang, L. Chen, Q. Chang, Adv. High Energy Phys. 2016, 5071671 (2016). arXiv:1511.03420 [hep-ph]
Cited by
1 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