Author:
Geng C. Q.,Hsiao Y. K.,Liu Chia-Wei,Tsai Tien-Hsueh
Abstract
Abstract
We study the semileptonic and non-leptonic charmed baryon decays with SU(3) flavor symmetry, where the charmed baryons can be B
c
= (Ξ
c
0
, Ξ
c
+
, Λ
c
+
), B
c
′
= (Σ
c
(++,+,0)
, Ξ
c
′ (+,0)
, Ω
c
0
), B
cc
= (Ξ
cc
+ +
, Ξ
cc
+
, Ω
c
+
) or B
cc
= Ω
ccc
+ +
. With B
n
(′)
denoted as the baryon octet (decuplet), we find that the B
c
→ B
n
′
ℓ
+
ν
ℓ
decays are forbidden, while the Ω
c
0
→ Ω−
ℓ
+
ν
ℓ
, Ω
cc
+
→ Ω
c
0
ℓ
+
ν
ℓ
, and Ω
ccc
+ +
→ Ω
cc
+
ℓ
+
ν
ℓ
decays are the only existing Cabibbo- allowed modes for B
c
′
→ B
n
′
ℓ
+
ν
ℓ
, B
cc
→ B
c
′
ℓ
+
ν
ℓ
, and B
ccc
→ B
cc
(′)
ℓ
+
ν
ℓ
, respectively. We predict the rarely studied B
c
→ B
n
(′)
M decays, such as
$$ \mathrm{\mathcal{B}}\left({\Xi}_c^0\to {\Lambda}^0{\overline{K}}^0,{\Xi}_c^{+}\to {\Xi}^0{\pi}^{+}\right)=\left(8.3\pm 0.9,\ 8.0\pm 4.1\right)\times {10}^{-3}\kern0.5em \mathrm{and}\kern0.5em \mathrm{\mathcal{B}}\left({\Lambda}_c^{+}\to {\Delta}^{++}{\pi}^{-},{\Xi}_c^0\to {\Omega}^{-}{K}^{+}\right)=\left(5.5\pm 1.3,\kern0.5em 4.8\pm 0.5\right)\times {10}^{-3} $$
ℬ
Ξ
c
0
→
Λ
0
K
¯
0
,
Ξ
c
+
→
Ξ
0
π
+
=
8.3
±
0.9
,
8.0
±
4.1
×
10
−
3
and
ℬ
Λ
c
+
→
Δ
+
+
π
−
,
Ξ
c
0
→
Ω
−
K
+
=
5.5
±
1.3
,
4.8
±
0.5
×
10
−
3
. For the observation, the doubly and triply charmed baryon decays of
$$ {\Omega}_{cc}^{+}\to {\Xi}_c^{+}{\overline{K}}^0,{\Xi}_{cc}^{++}\to \left({\Xi}_c^{+}{\pi}^{+},{\varSigma}_c^{++}{\overline{K}}^0\right),\kern0.5em \mathrm{and}\kern0.5em {\Omega}_{ccc}^{++}\to \left({\Xi}_{cc}^{++}{\overline{K}}^0,{\Omega}_{cc}^{+}{\pi}^{+},{\Xi}_c^{+}{D}^{+}\right) $$
Ω
cc
+
→
Ξ
c
+
K
¯
0
,
Ξ
cc
+
+
→
Ξ
c
+
π
+
,
Σ
c
+
+
K
¯
0
,
and
Ω
c
c
c
+
+
→
Ξ
cc
+
+
K
¯
0
,
Ω
cc
+
π
+
,
Ξ
c
+
D
+
are the favored Cabibbo-allowed decays, which are accessible to the BESIII and LHCb experiments.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference39 articles.
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3. BESIII collaboration, M. Ablikim et al., Evidence for the singly-Cabibbo-suppressed decay Λ+
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c → pπ
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