Role of the possible<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mi>Σ</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:mrow><mml:mo>(</mml:mo><mml:msup><mml:mrow><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:mrow><mml:mo>−</mml:mo></mml:msup><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math>state in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Λ</mml:mi><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi>Λ</mml:mi><mml:mi>p</mml:mi>

Xie, Ju-Jun; Wu, Jia-Jun; Zou, B. S.

doi:10.1103/physrevc.90.055204

Cited by 28 publications

(25 citation statements)

References 33 publications

(35 reference statements)

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“…[19] for more details). To get the whole decay amplitudes of Λ + c → ηΣ * + 1/2 − (1380) → ηπ + Λ and Λ + c → ηΣ * + (1385) → ηπ + Λ, we use the following effective interaction Lagrangians [22][23][24][25] for the Σ * 1 πΛ and Σ * 2 πΛ vertices,…”

Section: Feynman Diagrams and Decay Amplitudesmentioning

confidence: 99%

“…For g πΛΣ * 1 , we fix it to be 2.12 as used in Refs. [11,12], assuming that the Σ * (1380) total decay width, 120 MeV, is solely from the πΛ decay. Then, the invariant decay amplitude is given by,…”

Section: Feynman Diagrams and Decay Amplitudesmentioning

confidence: 99%

“…The possibility for the existence of such a new Σ * (1380) state in different reactions was pointed out in Refs. [6][7][8][9][10][11][12]. From the analysis of the CLAS data on the γp → K + π ± Σ ∓ reactions [13], it is shown that there is an isospin I = 1 resonance in the vicinity of theKN threshold [14].…”

Section: Introductionmentioning

confidence: 99%

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$\Lambda _{c}^{ + } \to \eta \pi ^{ + }\Lambda $ Decay and the Possible $\Sigma _{1/2^{ - }}^{*}(1380)$

Xie

Geng

2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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A possible Σ * state with spin-parity J P = 1/2 − [Σ * 1/2 − (1380)] has been predicted in several pentaquark models. In the present work, we discuss how one can employ the Λ + c → ηπ + Λ decay to test its existence, as well as to study the Σ * 3/2 + (1385) state with J P = 3/2 +. Because the final π + Λ system is in a pure isospin I = 1 combination, the Λ + c → ηπ + Λ decay can be an ideal process to study these Σ * resonances. In particular, we show that the decay angle and energy distributions of the π + are very different for Σ * 3/2 + (1385) and Σ * 1/2 − (1380). The proposed decay mechanism as well as the existence of the Σ * 1/2 − (1380) state can be checked by future BelleII and BESIII experiments. KEYWORDS: Λ + c hadronic decays, Σ * (1380), effective Lagrangian approach.

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Section: Feynman Diagrams and Decay Amplitudesmentioning

confidence: 99%

Section: Feynman Diagrams and Decay Amplitudesmentioning

confidence: 99%

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$\Lambda _{c}^{ + } \to \eta \pi ^{ + }\Lambda $ Decay and the Possible $\Sigma _{1/2^{ - }}^{*}(1380)$

Xie

Geng

2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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“…The need for the existence of such an isovector resonance has been discussed when describing different experimental data in Refs. [10][11][12][13][14][15][16]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

The decay of $N^*$(1895) to light hyperon resonances

Khemchandani¹,

Torres²,

Kim³

et al. 2022

Preprint

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In this talk I review the findings of our recent works where we have studied the decay of N * (1895) and the implications of such properties on the photoproduction of light hyperons. I discuss that meson-baryon interactions play an essential role in describing the nature of N * (1895) and report the details of our investigation of its decays to different meson-baryon systems and to final states involving Λ( 1405) and a proposed Σ(1400). We find that the width of N * (1895) gets important contributions from the decay to light hyperon resonances. Such an information can be used to look for alternative processes to study N * (1895) in experimental data.

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“…We study the γp → K + ηΛ reaction within an effective Lagrangian approach and the isobar model, which has been successfully used in our previous work [14][15][16][17][18][19][20]. The basic Feynman diagrams for this process are depicted in Fig.…”

Section: Formalism and Ingredientsmentioning

confidence: 99%