Three-body charmed baryon decays with SU(3) flavor symmetry
Three-body charmed baryon decays with SU(3) flavor symmetry
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三体迷人重子衰变具有 SU(3) 风味对称性
DOI:
10.1103/physrevd.99.073003
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发表时间:
2018-10
期刊:
影响因子:
--
通讯作者:
T.H. Tsai
中科院分区:
文献类型:
--
作者:
C.Q. Geng;Y.K. Hsiao;C.W. Liu;T.H. Tsai
We study the three-body anti-triplet ${\bf B_c}\to {\bf B_n}MM'$ decays with the $SU(3)$ flavor ($SU(3)_f$) symmetry, where ${\bf B_c}$ denotes the charmed baryon anti-triplet of $(\Xi_c^0,-\Xi_c^+,\Lambda_c^+)$, and ${\bf B_n}$ and $M(M')$ represent baryon and meson octets, respectively. By considering only the S-wave $MM'$-pair contributions without resonance effects, the decays of ${\bf B_c}\to {\bf B_n}MM'$ can be decomposed into irreducible forms with 11 parameters under $SU(3)_f$, which are fitted by the 14 existing data, resulting in a reasonable value of $\chi^2/d.o.f=2.8$ for the fit. Consequently, we find that the triangle sum rule of ${\cal A}(\Lambda_c^+\to n\bar K^0 \pi^+)-{\cal A}(\Lambda_c^+\to pK^- \pi^+)-\sqrt 2 {\cal A}(\Lambda_c^+\to p\bar K^0 \pi^0)=0$ given by the isospin symmetry holds under $SU(3)_f$, where ${\cal A}$ stands for the decay amplitude. In addition, we predict that ${\cal B}(\Lambda_c^+\to n \pi^{+} \bar{K}^{0})=(0.9\pm 0.8)\times 10^{-2}$, which is $3-4$ times smaller than the BESIII observation, indicating the existence of the resonant states. For the to-be-observed ${\bf B_c}\to {\bf B_n}MM'$ decays, we compute the branching fractions with the $SU(3)_f$ amplitudes to be compared to the BESIII and LHCb measurements in the future.
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影响因子:
5
作者:
M. Gronau;J. Rosner;C. Wohl
通讯作者:
M. Gronau;J. Rosner;C. Wohl
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
5
作者:
M. Gronau;J. Rosner
通讯作者:
M. Gronau;J. Rosner
影响因子:
5
作者:
Hai-Yang Cheng;C. Chiang
通讯作者:
Hai-Yang Cheng;C. Chiang
DOI:
10.1016/j.physletb.2017.11.062
发表时间:
2018
期刊:
Phys. Lett. B
影响因子:
--
作者:
C.Q. Geng;Yu-Kuo Hsiao;Yu-Heng Lin;Liang-Liang Liu
通讯作者:
Liang-Liang Liu