Analysis of 
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, 
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Kawakami, Y.; Harada, Masayasu

doi:10.1103/physrevd.97.114024

Cited by 27 publications

(32 citation statements)

References 30 publications

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“…Which are close to | g 2 | 2015 = 0.565 +0.011 −0.024 and | g 2 | 2006 = 0.605 +0.039 −0.043 and in accordance with the recent prediction 0.688 +0.013 −0.035 of Ref. [39]. The coupling h 2 controls the decay of first orbital excitation of isodoublet Ξ c baryon.…”

Section: Strong Decayssupporting

confidence: 90%

Spectrum of strange singly charmed baryons in the constituent quark model

Gandhi

Kumar

2020

Eur. Phys. J. Plus

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Excited states masses of the strange singly charmed baryons are calculated using the non-relativistic approach of hypercentral Constituent Quark Model (hCQM). The hyper-Coulomb plus screened potential is used as a confinement potential with the first order correction. The spin-spin, spinorbit and spin-tensor interaction terms are included perturbatively. Our calculated masses are allowed to construct the Regge trajectories in both (n r , M 2 ) and (J, M 2 ) planes. The mass spectra and the Regge trajectories study predict the spin-parity of Ξ c (2970) +/0 , Ξ c (3080) +/0 , Ξ c (3123) + , Ω c (3000) 0 and Ω c (3119) 0 baryons. Moreover, the strong one pion decay rates of the isodoublet states of Ξ c (2645), Ξ c (2790) and Ξ c (2815) are analyzed in the framework of Heavy Hadron Chiral Perturbation Theory (HHChPT). Also, the ground state magnetic moments and the radiative decay rates based on the transition magnetic moments are calculated in the framework of constituent quark model.

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Section: Strong Decayssupporting

confidence: 90%

Spectrum of strange singly charmed baryons in the constituent quark model

Gandhi

Kumar

2020

Eur. Phys. J. Plus

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“…As the diquarks are not directly observed, we may instead consider a singly heavy baryon, a bound state of a diquark with a heavy quark Q (charm or bottom) [28,29]. Corresponding baryons are Λ Q , and Ξ Q with spin-parity 1/2 + and 1/2 − .…”

Section: F Masses Of the Singly Heavy Baryonsmentioning

confidence: 99%

Chiral effective theory of diquarks and the UA(1) anomaly

et al. 2020

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The diquark is a strongly-correlated quark pair that plays an important role in hadrons and hadronic matter. In order to treat the diquak as a building block of hadrons, we formulate an effective theory of diquark fields with SU (3)R × SU (3)L chiral symmetry. We concentrate on the scalar (0 + ) and pseudoscalar (0 − ) diquarks and construct a linear-sigma-model Lagrangian. It is found that the effective Lagrangian contains a new type of chirally symmetric meson-diquark-diquark coupling that breaks axial UA(1) symmetry. We discuss consequences of the UA(1) anomaly term to the diquark masses as well as to the singly heavy baryon spectrum, which is directly related to the diquark spectrum. We find an inverse mass ordering between strange and nonstrange diquarks. The parameters of the effective theory can be determined by the help of lattice QCD calculations of diquarks and also from the mass spectrum of the singly heavy baryons. We determine the strength of the UA(1) anomaly term, which is found to give a significant portion of the diquark masses.

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“…In this section, we construct an effective model of single heavy baryons (SHBs) by extending the two-flavor model provided in the previous work [12], to three-flavor case.…”

Section: Effective Lagrangianmentioning

confidence: 99%

“…We note that we include g v 2 -term to incorporate the heavy-flavor violation needed for explaining the mass differences of charm and bottom sectors (See Ref. [12].). Although we can add heavy-quark flavor violation terms corresponding to g 1term, such contributions are absorbed into the definition of ∆.…”

Section: Effective Lagrangianmentioning

confidence: 99%

“…Ref. [12], we proposed a new chiral partner structure for SHBs including a heavy quark and two light quarks. There, we considered the chiral partners of Σ Q (Q = c, b) baryons with positive parity as Λ Q baryons with negative parity: a heavy quark doublet of Λ c (2595; J P = 1/2 − ) , Λ c (2625; 3/2 − ) is regarded as the chiral partners to the doublet of (Σ c (2455; 1/2 + ) , Σ c (2520; 3/2 + )), and (Λ b (5912; 1/2 − ) , Λ b (5920; 3/2 − )) to (Σ b (1/2 + ) , Σ * b (3/2 + )).…”

Section: Introductionmentioning

confidence: 99%

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Singly heavy baryons with chiral partner structure in a three-flavor chiral model

Kawakami

Harada

2019

Phys. Rev. D

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We construct an effective hadronic model including single heavy baryons (SHBs) belonging to the (3, 3) representation under SU(3)L × SU(3)R symmetry, respecting the chiral symmetry and heavy-qaurk spin-flavor symmetry. When the chiral symmetry is spontaneously broken, the SHBs are divided into the baryons with negative parity of3 representation under SU(3) flavor symmetry which is the chiral partners to the ones with positive parity of 6 representation. We determine the model parameters from the available experimental data for the masses and strong decay widths of Σ ( * ) c , Λc (2595), Ξc(2790), and Ξc(2815). Then, we predict the masses and strong decay widths of other baryons including Ξ b with negative parity. We also study radiative decays of SHBs including

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Analysis of Λc(2595) , Λc(2625)

Cited by 27 publications

References 30 publications

Spectrum of strange singly charmed baryons in the constituent quark model

Spectrum of strange singly charmed baryons in the constituent quark model

Chiral effective theory of diquarks and the UA(1) anomaly

Singly heavy baryons with chiral partner structure in a three-flavor chiral model

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