Hyperon weak radiative decays

Bassalleck, B.

doi:10.1016/0375-9474(94)00575-8

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…In such processes the contributions will come from the term proportional to C in Eq. (20). The wavefunctions and detailed expressions of the transition amplitudes are provided in the Appendix.…”

Section: B the Decay Width And Asymmetry Parametermentioning

confidence: 99%

“…By estimating the relative SU (6) spin-flavor coupling coefficients they showed the intermediate 1/2 − states could have sizeable contributions to the parity-violating amplitude. Various calculations based on the pole dominance scenario in the quark model can be found in the literature [14][15][16][17][18][19][20]. Besides the quark model approaches, chiral perturbation theory (ChPT) has also been applied to the hyperon decays and the intermediate 1/2 − states were found to play an essential role in the hyperon radiative decays [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Hyperon Weak Radiative Decay

Niu,

Richard,

Wang

et al. 2020

Preprint

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We revisit the hyperon weak radiative decays in the framework of the non-relativistic constituent quark model. This study confirms the nonlocal feature of the hyperon weak radiative transition operators which are dominated by the pole terms, and an overall self-consistent description of the available experimental data for the Cabibbo-favored hyperon weak radiative decays is achieved. It provides a natural mechanism for evading the Hara theorem, where sizeable parity-violating contributions can come from the intermediate orbital excitations. Cancellations between pole terms also explain significant SU(3) flavor symmetry breaking manifested by the experimental data. We also discuss several interesting selection rules arising from either the electromagnetic or the weak interaction vertices. These features suggest nontrivial relations among different hyperon decays.

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Section: B the Decay Width And Asymmetry Parametermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hyperon Weak Radiative Decay

Niu,

Richard,

Wang

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…By estimating the relative SU (6) spin-flavor coupling coefficients, they showed that the intermediate states could have sizeable contributions to the parity-violating amplitude. Various calculations based on the pole dominance scenario in the quark model can be found in the literature [14][15][16][17][18][19][20]. The SU (3) flavor symmetry and pole model are combined to investigate the weak electromagnetic decays of hyperons in Ref.…”

Section: Introduction J/ψ J/ψmentioning

confidence: 99%

Hyperon weak radiative decay *

Niu¹,

Richard²,

Wang³

et al. 2021

Chinese Phys. C

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We revisit the hyperon weak radiative decays in the framework of the non-relativistic constituent quark model. This study confirms the nonlocal feature of the hyperon weak radiative transition operators, which are dominated by the pole terms, and an overall self-consistent description of the available experimental data for the Cabibbo-favored hyperon weak radiative decays is presented. It provides a natural mechanism for evading the Hara theorem, where sizeable parity-violating contributions can come from the intermediate orbital excitations. Cancellations between pole terms also explain the significant SU(3) flavor symmetry breaking manifested by the experimental data. We also discuss several interesting selection rules arising from either the electromagnetic or the weak interaction vertices. These features suggest nontrivial relations among various hyperon decays.

show abstract

Electroproduction of hyperons

Drechsel

Giannini

1997

Physics Letters B

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Hyperon weak radiative decays

Cited by 3 publications

References 19 publications

Hyperon Weak Radiative Decay

Hyperon Weak Radiative Decay

Hyperon weak radiative decay *

Electroproduction of hyperons

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