scholarly journals Two-body charmed baryon decays involving vector meson with SU(3) flavor symmetry

2019 ◽  
Vol 792 ◽  
pp. 35-39 ◽  
Author(s):  
Y.K. Hsiao ◽  
Yu Yao ◽  
H.J. Zhao
Keyword(s):  
Vector Meson ◽  
Flavor Symmetry ◽  
Charmed Baryon

scholarly journals Charmed baryon weak decays with SU(3) flavor symmetry

2017 ◽  
Vol 2017 (11) ◽  
Author(s):  
C. Q. Geng ◽  
Y. K. Hsiao ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai
Keyword(s):  
Flavor Symmetry ◽  
Charmed Baryon ◽  
Weak Decays

scholarly journals BARYONS AS THREE-FLAVOR SOLITONS

1996 ◽  
Vol 11 (14) ◽  
pp. 2419-2544 ◽  
Author(s):  
HERBERT WEIGEL
Keyword(s):  
Symmetry Breaking ◽  
Vector Meson ◽  
Degrees Of Freedom ◽  
Magnetic Moments ◽  
Axial Vector ◽  
Vector Current ◽  
Bound State ◽  
Axial Vector Current ◽  
Flavor Symmetry ◽  
Matrix Elements

The description of baryons as soliton solutions of effective meson theories for three-flavor (up, down and strange) degrees of freedom is reviewed and the phenomenological implications are illuminated. In the collective approach the soliton configuration is equipped with baryon quantum numbers by canonical quantization of the coordinates describing the flavor orientation. The baryon spectrum resulting from exact diagonalization of the collective Hamiltonian is discussed. The prediction of static properties, such as the baryon magnetic moments and the Cabibbo matrix elements for semileptonic hyperon decays, are explored with regard to the influence of flavor symmetry breaking. In particular, the role of strange degrees of freedom in the nucleon is investigated for both the vector and axial vector current matrix elements. The latter are discussed extensively within the context of the proton spin puzzle. The influence of flavor symmetry breaking on the shape of the soliton is examined, and observed to cause significant deviations from flavor-covariant predictions on the baryon magnetic moments. Short range effects are incorporated by a chirally invariant inclusion of vector meson fields. These extensions are necessary for properly describing the singlet axial vector current and the neutron–proton mass difference. The effects of the vector meson excitations on baryon properties are also considered. The bound state description of hyperons and its generalization to baryons containing a heavy quark are illustrated. In the case of the Skyrme model a comparison is made between the collective quantization scheme and the bound state approach. Finally, the Nambu–Jona-Lasinio model is employed to demonstrate that hyperons can be described as solitons in a microscopic theory of the quark flavor dynamics. This is explained for both the collective and the bound state approaches to strangeness.

scholarly journals Charmed baryon spectroscopy and light flavor symmetry from lattice QCD

2015 ◽  
Vol 92 (3) ◽  
Author(s):  
Paula Pérez-Rubio ◽  
Sara Collins ◽  
Gunnar S. Bali
Keyword(s):  
Lattice Qcd ◽  
Flavor Symmetry ◽  
Charmed Baryon ◽  
Baryon Spectroscopy

scholarly journals Doubly charmed tetraquarks in a diquark–antidiquark model

2018 ◽  
Vol 33 (16) ◽  
pp. 1850096 ◽  
Author(s):  
Xiaojun Yan ◽  
Bin Zhong ◽  
Ruilin Zhu
Keyword(s):  
Excited States ◽  
Flavor Symmetry ◽  
Tetraquark State ◽  
Charmed Mesons ◽  
Charmed Baryon ◽  
Light Baryon ◽  
State Formula

We study the spectra of the doubly charmed tetraquark states in a diquark–antidiquark model. The doubly charmed tetraquark states form an antitriplet and sextet configurations according to flavor SU(3) symmetry. For the tetraquark state [Formula: see text], we show the mass for both bound and excited states. The two-body decays of tetraquark states [Formula: see text] and [Formula: see text] to charmed mesons have also been studied. In the end, the doubly charmed tetraquarks decays to a charmed baryon and a light baryon have been studied in the SU(3) flavor symmetry.

scholarly journals Three-body charmed baryon decays with SU(3) flavor symmetry

2019 ◽  
Vol 99 (7) ◽  
Author(s):  
C. Q. Geng ◽  
Y. K. Hsiao ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai
Keyword(s):  
Flavor Symmetry ◽  
Charmed Baryon ◽  
Three Body

scholarly journals Charmed baryon weak decays with decuplet baryon and SU(3) flavor symmetry

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
Chao-Qiang Geng ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai ◽  
Yao Yu
Keyword(s):  
Flavor Symmetry ◽  
Charmed Baryon ◽  
Weak Decays ◽  
Decuplet Baryon

scholarly journals Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Y. K. Hsiao ◽  
Qian Yi ◽  
Shu-Ting Cai ◽  
H. J. Zhao
Keyword(s):  
Pseudoscalar Meson ◽  
Branching Fractions ◽  
Flavor Symmetry ◽  
Isospin Symmetry ◽  
Charmed Baryon ◽  
Decay Channels ◽  
Decuplet Baryon ◽  
Exchange Processes ◽  
Quark Diagram ◽  
Cabibbo Suppressed

AbstractIn the quark-diagram scheme, we study the charmed baryon decays of $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M , where $$\mathbf{B}_c$$ B c is $$\Lambda _c^+$$ Λ c + or $$\Xi _c^{+(0)}$$ Ξ c + ( 0 ) , together with $$\mathbf{B}^*$$ B ∗ (M) the decuplet baryon (pseudoscalar meson). It is found that only two W-exchange processes are allowed to contribute to $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M . Particularly, we predict $${\mathcal {B}}(\Lambda _c^+ \rightarrow \Sigma ^{*0(+)} \pi ^{+(0)})=(2.8\pm 0.4)\times 10^{-3}$$ B ( Λ c + → Σ ∗ 0 ( + ) π + ( 0 ) ) = ( 2.8 ± 0.4 ) × 10 - 3 , which respects the isospin symmetry. Besides, we take into account the SU(3) flavor symmetry breaking, in order to explain the observation of $${\mathcal {B}}(\Lambda _c^+\rightarrow \Sigma ^{*+}\eta )$$ B ( Λ c + → Σ ∗ + η ) . For the decays involving $$\Delta ^{++}(uuu)$$ Δ + + ( u u u ) , we predict $${\mathcal {B}}(\Lambda _c^+\rightarrow \Delta ^{++} \pi ^-,\Xi _c^+ \rightarrow \Delta ^{++} K^-) =(7.0\pm 1.4,13.5\pm 2.7)\times 10^{-4}$$ B ( Λ c + → Δ + + π - , Ξ c + → Δ + + K - ) = ( 7.0 ± 1.4 , 13.5 ± 2.7 ) × 10 - 4 as the largest branching fractions in the singly Cabibbo-suppressed $$\Lambda _c^+,\Xi _c^+\rightarrow \mathbf{B}^*M$$ Λ c + , Ξ c + → B ∗ M decay channels, respectively, which are accessible to the LHCb, BELLEII and BESIII experiments.

scholarly journals Up-down asymmetries of charmed baryon three-body decays

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Jian-Yong Cen ◽  
Chao-Qiang Geng ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai
Keyword(s):  
Decay Amplitude ◽  
Flavor Symmetry ◽  
S Wave ◽  
Octet Baryon ◽  
Final State ◽  
Charmed Baryon ◽  
Data Points ◽  
Three Body ◽  
Meson States ◽  
Formula Method

AbstractWe 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.

scholarly journals Antitriplet charmed baryon decays with SU(3) flavor symmetry

2018 ◽  
Vol 97 (7) ◽  
Author(s):  
C. Q. Geng ◽  
Y. K. Hsiao ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai
Keyword(s):  
Flavor Symmetry ◽  
Charmed Baryon
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