Charmed baryon weak decays with SU(3) flavor symmetry

Geng, C. Q.; Hsiao, Y. K.; Liu, Chia-Wei; Tsai, Tien-Hsueh

doi:10.1007/jhep11(2017)147

Cited by 74 publications

(72 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, the decays of Λ þ c → B n M have been explained well by the global fit in Ref. [30], together with the predictions of BðΞ extracted from the ratios of BðΞ [31].…”

supporting

confidence: 56%

“…Since BESIII and LHCb are expected to search for all possible antitriplet charmed baryon decays, one can test whether or not the studies of Λ þ c → B n M can be applied to Ξ 0;þ c → B n M. Theoretically, the factorization for the b baryon decays [8][9][10][11][12][13] does not work for the charmed baryon decays, which receive corrections by taking into account the nonfactorizable effects [14][15][16][17][18][19]. On the other hand, the possible b or c hadron decay modes can be examined by the SUð3Þ f symmetry [20][21][22][23][24][25][26][27][28][29][30][31]. Furthermore, the symmetry approach has been extended to explore the doubly and triply charmed baryon decays [31], which helps to establish the spectroscopies of the doubly and triply charmed baryon states [32], such as the to-be-confirmed Ξ þ cc state [33][34][35][36][37][38].…”

mentioning

confidence: 99%

“…On the other hand, the possible b or c hadron decay modes can be examined by the SUð3Þ f symmetry [20][21][22][23][24][25][26][27][28][29][30][31]. Furthermore, the symmetry approach has been extended to explore the doubly and triply charmed baryon decays [31], which helps to establish the spectroscopies of the doubly and triply charmed baryon states [32], such as the to-be-confirmed Ξ þ cc state [33][34][35][36][37][38]. Moreover, to test the validity of the SUð3Þ f symmetry in the antitriplet charmed baryon decays, a complete numerical analysis for the decays is necessary.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Antitriplet charmed baryon decays with SU(3) flavor symmetry

et al. 2018

Self Cite

View full text Add to dashboard Cite

“…In fact, the decays of Λ þ c → B n M have been explained well by the global fit in Ref. [30], together with the predictions of BðΞ extracted from the ratios of BðΞ [31].…”

supporting

confidence: 56%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Antitriplet charmed baryon decays with SU(3) flavor symmetry

et al. 2018

Self Cite

View full text Add to dashboard Cite

“…These relations for the charmed baryons are consistent with those in Refs. [79,80], while the ones for the bottomed baryons, as far as we know, are first derived by this work.…”

Section: E Su(3) Analysis For Semi-leptonic Decaysmentioning

confidence: 99%

Weak decays of heavy baryons in the light-front approach

2018

View full text Add to dashboard Cite

In this work, we perform a analysis of semi-leptonic and nonleptonic weak decays of heavy baryons: Λ b , Ξ b , Ω b and Λ c , Ξ c , Ω c . For nonleptonic decay modes, we study only the factorizable channels induced by the external W-emission. The two spectator quarks in baryonic transitions are treated as a diquark and form factors are calculated in the lightfront approach. Using the results for form factors, we also calculate some corresponding semi-leptonic and nonleptonic decay widths. We find that our results are comparable with the available experimental data and other theoretical predictions. Decay branching fractions for many channels are found to reach the level 10 −3 ∼ 10 −2 , which are promising to be discovered in the future measurements at BESIII, LHCb and BelleII. The SU(3) symmetry in semi-leptonic decays is examined and sources of symmetry breaking are discussed. I. INTRODUCTIONQuite recently, the LHCb collaboration announced the discovery of the doubly charmed baryon Ξ ++ cc [1]. Undoubtedly this discovery will open a new door to study strong interactions in the presence of a pair of heavy quarks. Accordingly it has triggered great theoretical interests in studying doubly heavy baryons from different aspects [2-21].Inspired by this discovery, we also expect a renaissance in the study of singly bottom or charm baryons. Particularly there are rapid progresses in the study of Λ c decays at BESIII [22][23][24][25][26][27] and some recent studies on Λ b and Λ c decays by LHCb can be found in Refs. [28][29][30][31][32][33]. It is anticipated that many more decay modes will be established in future. Thus an up-to-date theoretical analysis is highly demanded, and this work aims to do so. Quark model is a very successful tool in classifying mesons and baryons. A heavy baryon is composed of one heavy quark c/b and two light quarks. Light flavor SU(3) symmetry arranges the singly heavy baryons into the presentations 3 ⊗ 3 = 6 ⊕ 3, as can be seen from Fig. 1. For charmed baryons, the irreducible representation 3 is composed of Λ + c and Ξ +,0 c while the sextet is composed of Σ ++,+,0 c , Ξ ′+,′0 cand Ω 0 c . They all have spin 1/2, but only 4 of them weakly decay predominantly: Λ + c and Ξ +,0 c in the representation 3 and Ω 0 c in the representation 6. Others can decays into the lowest-lying states via strong or electromagnetic interactions. This is similar for bottomed baryons. In this work, we will focus on weak decays of singly heavy baryons and more explicitly we will consider only the following channels:• charm sector:c (cds) → Σ − (dds)/Ξ − (sds), Ω 0 c (css) → Ξ − (dss); • bottom sector: Λ 0 b (bud) → p(uud)/Λ + c (cud), Ξ 0 b (bus) → Σ + (uus)/Ξ + c (cus), Ξ − b (bds) → Σ 0 (uds)/Λ(uds)/Ξ 0 c (cds), Ω − b (bss) → Ξ 0 (uss)/Ω 0 c (css).

show abstract

“…The flavor SU (3) symmetry is an effective way to deal with the exclusive decays of hadrons, especially for heavy mesons [13][14][15][16][17] or heavy baryons [18][19][20][21][22][23][24][25][26][27][28][29][30], which are difficult to analysed through the factorization theorem (Refs. [31][32][33][34][35][36][37][38] for heavy mesons and Refs.…”

Section: Introductionmentioning

confidence: 99%

Weak decays of doubly heavy baryons: W-exchange

Zhang

2018

Eur. Phys. J. C

View full text Add to dashboard Cite

Since the LHCb collaboration announced the observation of the doubly charmed baryon Ξ ++ cc , a series of studies of doubly heavy baryons have been presented. In this work, I analyse the nonleptonic weak decays of doubly heavy baryons Ξ bc and Ω bc under the flavor SU (3) symmetry. I mainly focus on the W -exchange diagrams, which will contribute to the decay channels with final states are light meson and light baryon. These channels would be helpful for searching for Ξ bc and Ω bc at LHC. And these channels and relations of corresponding decay widths could be examined by the future experimental facilities such as LHC, Belle II and CEPC.

show abstract

Charmed baryon weak decays with SU(3) flavor symmetry

Cited by 74 publications

References 49 publications

Antitriplet charmed baryon decays with SU(3) flavor symmetry

Antitriplet charmed baryon decays with SU(3) flavor symmetry

Weak decays of heavy baryons in the light-front approach

Weak decays of doubly heavy baryons: W-exchange

Contact Info

Product

Resources

About