Weak decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi mathvariant="normal">Λ</mml:mi><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mo>+</mml:mo></mml:msubsup></mml:math>for the study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi><mml:mo>(</mml:mo><mml:mn>1405</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">Λ</mml:

Miyahara, Kenta; Hyodo, Tetsuo; Oset, E.

doi:10.1103/physrevc.92.055204

Cited by 61 publications

(68 citation statements)

References 57 publications

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“…Further arguments are given in Ref. [49]. There is also an interesting experimental feature supporting the spectator assumption for the original ud pair.…”

Section: A Weak Decay and Hadronizationmentioning

confidence: 86%

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Wang¹,

Chen²,

Geng³

et al. 2016

Phys. Rev. D

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We study here the Λ 0 b → J/ψpπ − reaction in analogy to the Λ 0 b → J/ψpK − one, and we note that in both decays there is a sharp structure (dip or peak) in the J/ψp mass distribution around 4450 MeV, which is associated in the Λ − one, with the main difference stemming from the reduced Cabibbo strength in the former and the consideration of the π − p final state interaction instead of the K − p one. We find that with a minimal input, introducing the π − p and J/ψp interaction in S -wave with realistic interactions, and the empirical P-wave and D-wave contributions, one can accomplish a qualitative description of the π − p and J/ψp mass distributions. More importantly, the peak structure followed by a dip of the experimental J/ψp mass distribution is reproduced with the same input as used to describe the data of Λ 0 b → J/ψpK − reaction. The repercussion for the triangular singularity mechanism, invoked in some works to explain the pentaquark peak, is discussed.

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“…Further arguments are given in Ref. [49]. There is also an interesting experimental feature supporting the spectator assumption for the original ud pair.…”

Section: A Weak Decay and Hadronizationmentioning

confidence: 86%

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Wang¹,

Chen²,

Geng³

et al. 2016

Phys. Rev. D

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“…Following our previous work [24], we show in Fig. 3 the dominant quark-line diagram for the Ξ + c → π + (M B) decay, when the final M B pair is emitted close to threshold.…”

Section: Formulationmentioning

confidence: 99%

“…In a similar way, in Ref. [24] the Λ + c → π + πΣ(KN, ηΛ) was studied and shown to be also a good filter for I = 0 baryon states, allowing one to see the Λ(1405) and Λ(1670) resonances.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the Ξ(1620) and Ξ(1690) resonances in
Miyahara
¹
,
Hyodo
²
,
Oka
³

et al. 2017
Phys. Rev. C
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Nonleptonic weak decays of Ξc into π + and a meson (M )-baryon (B) final state, M B, are analyzed from the viewpoint of probing S = −2 baryon resonances, i.e., Ξ(1620) and Ξ(1690), of which spinparity and other properties are not well known. We argue that the weak decay of Ξc is dominated by a single quark-line diagram, preferred by the Cabibbo-Kobayashi-Maskawa coefficient, color recombination factor, the diquark correlation, and the kinematical condition. The decay process has an advantage of being free from meson resonances in the π + M invariant mass distribution. The invariant mass distribution of the meson-baryon final state is calculated with three different chiral unitary approaches, assuming that the Ξ(1620) and Ξ(1690) resonances have J P = 1/2 − . It is found that a clear peak for the Ξ(1690) is seen in the πΞ andKΛ spectra. We also suggest that the ratios of the πΞ,KΛ andKΣ final states are useful to distinguish whether the peak is originated from the Ξ(1690) resonance or it is aKΣ threshold effect.

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“…The same/similar method was also used to study the hidden-charm baryons in a series of papers [261,262,263,264,265,266,267], all of which are done before the LHCb's discovery of the P c (4380) and P c (4450) [2]. The same/similar approach was applied to study hiddenbottom baryons [268,269] and their productions [270,271,272,273], some of which will be discussed in Sec. 3.7 and Sec.…”

Section: Dynamically Generated Resonancementioning

confidence: 99%

The hidden-charm pentaquark and tetraquark states

et al. 2016

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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmoniumlike Z c states and bottomonium-like Z b states can not be accommodated within the naive quark model. These charged Z c states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

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Weak decay ofΛc+for the study ofΛ(1405)andΛ

Cited by 61 publications

References 57 publications

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Theoretical study of the Ξ(1620) and Ξ(1690) resonances in
Miyahara
¹
,
Hyodo
²
,
Oka
³

et al. 2017
Phys. Rev. C
Self Cite
47
2
30
0
View full text Add to dashboard Cite

The hidden-charm pentaquark and tetraquark states

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Weak decay ofΛc+for the study ofΛ(1405)andΛ

Cited by 61 publications

References 57 publications

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Hidden-charm pentaquark state inΛb0→J/ψpπ−decay

Theoretical study of the Ξ(1620) and Ξ(1690) resonances in Miyahara1, Hyodo2, Oka3 et al. 2017Phys. Rev. CSelf Cite472300View full textAdd to dashboardCite

The hidden-charm pentaquark and tetraquark states

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About

Theoretical study of the Ξ(1620) and Ξ(1690) resonances in
Miyahara
¹
,
Hyodo
²
,
Oka
³

et al. 2017
Phys. Rev. C
Self Cite
47
2
30
0
View full text Add to dashboard Cite