Up-down asymmetries of charmed baryon three-body decays
Abstract We study the up-down asymmetries in the three-body anti-triplet charmed baryon decays of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$ Bc→BnMM′ with the $$SU(3)_f$$ SU(3)f flavor symmetry, where $$\mathbf{B}_{\mathbf{c}}$$ Bc presents the anti-triplet charmed baryo...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-7467-z |
| _version_ | 1818253316984930304 |
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| author | Jian-Yong Cen Chao-Qiang Geng Chia-Wei Liu Tien-Hsueh Tsai |
| author_facet | Jian-Yong Cen Chao-Qiang Geng Chia-Wei Liu Tien-Hsueh Tsai |
| author_sort | Jian-Yong Cen |
| collection | DOAJ |
| description | Abstract We study the up-down asymmetries in the three-body anti-triplet charmed baryon decays of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$ Bc→BnMM′ with the $$SU(3)_f$$ SU(3)f flavor symmetry, where $$\mathbf{B}_{\mathbf{c}}$$ Bc presents the anti-triplet charmed baryon of $$(\Xi _c^0,-\Xi _c^+,\Lambda _c^+)$$ (Ξc0,-Ξc+,Λc+) , while $$\mathbf{B}_{\mathbf{n}}$$ Bn and $$M^{(')}$$ M(′) denote octet baryon and meson states, respectively. By assuming the s-wave meson-pairs to be the dominant constituents in final state configurations, we can write the spin-dependent decay amplitude into parity-conserving and parity-violating parts, parametrized by 6 real parameters under $$SU(3)_f$$ SU(3)f , respectively. Fitting these parameters by 16 experimental data points with the minimum $$\chi ^2$$ χ2 method, we obtain that $$\chi ^2/d.o.f=2.4$$ χ2/d.o.f=2.4 . With the fitted parameters, we evaluate the up-down asymmetries along with the decay branching ratios of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$ Bc→BnMM′ . Some of these up-down asymmetries are accessible to the experiments at BESIII, BELLE-II and LHCb. |
| first_indexed | 2024-12-12T16:38:09Z |
| format | Article |
| id | doaj.art-e6458a8edd294548ac0766459e1d0556 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-12T16:38:09Z |
| publishDate | 2019-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-e6458a8edd294548ac0766459e1d05562022-12-22T00:18:38ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-11-01791111110.1140/epjc/s10052-019-7467-zUp-down asymmetries of charmed baryon three-body decaysJian-Yong Cen0Chao-Qiang Geng1Chia-Wei Liu2Tien-Hsueh Tsai3School of Physics and Information Engineering, Shanxi Normal UniversitySchool of Physics and Information Engineering, Shanxi Normal UniversityDepartment of Physics, National Tsing Hua UniversityDepartment of Physics, National Tsing Hua UniversityAbstract We study the up-down asymmetries in the three-body anti-triplet charmed baryon decays of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$ Bc→BnMM′ with the $$SU(3)_f$$ SU(3)f flavor symmetry, where $$\mathbf{B}_{\mathbf{c}}$$ Bc presents the anti-triplet charmed baryon of $$(\Xi _c^0,-\Xi _c^+,\Lambda _c^+)$$ (Ξc0,-Ξc+,Λc+) , while $$\mathbf{B}_{\mathbf{n}}$$ Bn and $$M^{(')}$$ M(′) denote octet baryon and meson states, respectively. By assuming the s-wave meson-pairs to be the dominant constituents in final state configurations, we can write the spin-dependent decay amplitude into parity-conserving and parity-violating parts, parametrized by 6 real parameters under $$SU(3)_f$$ SU(3)f , respectively. Fitting these parameters by 16 experimental data points with the minimum $$\chi ^2$$ χ2 method, we obtain that $$\chi ^2/d.o.f=2.4$$ χ2/d.o.f=2.4 . With the fitted parameters, we evaluate the up-down asymmetries along with the decay branching ratios of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$ Bc→BnMM′ . Some of these up-down asymmetries are accessible to the experiments at BESIII, BELLE-II and LHCb.http://link.springer.com/article/10.1140/epjc/s10052-019-7467-z |
| spellingShingle | Jian-Yong Cen Chao-Qiang Geng Chia-Wei Liu Tien-Hsueh Tsai Up-down asymmetries of charmed baryon three-body decays European Physical Journal C: Particles and Fields |
| title | Up-down asymmetries of charmed baryon three-body decays |
| title_full | Up-down asymmetries of charmed baryon three-body decays |
| title_fullStr | Up-down asymmetries of charmed baryon three-body decays |
| title_full_unstemmed | Up-down asymmetries of charmed baryon three-body decays |
| title_short | Up-down asymmetries of charmed baryon three-body decays |
| title_sort | up down asymmetries of charmed baryon three body decays |
| url | http://link.springer.com/article/10.1140/epjc/s10052-019-7467-z |
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