Predictions for $$\Xi _b^- \rightarrow \pi ^- (D_s^- ) \ \Xi _c^0 (2790) \left( \Xi _c^0 (2815) \right) $$ Ξ b - → π - ( D s - ) Ξ c 0 ( 2790 ) Ξ c 0 ( 2815 ) and $$\Xi _b^- \rightarrow \bar{\nu }_l l \ \Xi _c^0 (2790) \left( \Xi _c^0 (2815) \right) $$ Ξ b - → ν ¯ l l Ξ c 0 ( 2790 ) Ξ c 0 ( 2815 )

Pavao, R.; Wu, Liang; Nieves, J.; Oset, E.

doi:10.1140/epjc/s10052-017-4836-3

Cited by 18 publications

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References 39 publications

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“…The same type of ideas were extended in Ref [20]. to the semileptonic and one pion decays of the Ξ − b baryons into Ξ * c resonances, analogs of the Λc(2595) and Λc(2625) states in the charm-strange sector.…”

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confidence: 91%

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$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Nieves,

Pavao,

Sakai

2019

Preprint

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We study the implications for Λ b → Λ * c ν and Λ b → Λ * c π − [Λ * c = Λc(2595) and Λc(2625)] decays that can be deduced from heavy quark spin symmetry (HQSS). Identifying the odd parity Λc(2595) and Λc(2625) resonances as HQSS partners, with total angular momentum-parity j P q = 1 − for the light degrees of freedom, we find that the ratios Γ 2625) ν ) agree, within errors, with the experimental values given in the Review of Particle Physics. We discuss how future, and more precise, measurements of the above branching fractions could be used to shed light into the inner HQSS structure of the narrow Λc(2595) odd-parity resonance. Namely, we show that such studies would constrain the existence of a sizable j P q = 0 − component in its wave-function, and/or of a two-pole pattern, in analogy to the case of the similar Λ(1405) resonance in the strange sector, as suggested by most of the approaches that describe the Λc(2595) as a hadron molecule. We also investigate the lepton flavor universality ratios Rand discuss how R[Λc(2595)] may be affected by a new source of potentially large systematic errors if there are two Λc(2595) poles.

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confidence: 91%

“…(v ) and the Rarita-Schwinger spinors u 3/2µ c (v ) stand for the spin 1/2 and spin 3/2 members of this doublet, respectively. The multiplet-spinor in Eq (20). satisfies / v U µ c (v ) = U µ c (v ), and v µ U µ c (v ) = 0.…”

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confidence: 99%

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Nieves,

Pavao,

Sakai

2019

Preprint

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Hidden charm pentaquark and Λ(1405) in the Λb0→ηcK−

Xie¹,

Wu²,

Oset³

2018

Physics Letters B

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Prediction of hidden charm strange molecular baryon states with heavy quark spin symmetry

2019

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We have studied the meson-baryon S−wave interaction in the isoscalar hidden-charm strange sector with the coupled-channels, η c Λ, c in 5/2 − . We impose constraints of heavy quark spin symmetry in the interaction and obtain the non vanishing matrix elements from an extension of the local hidden gauge approach to the charm sector. The ultraviolet divergences are renormalized using the same meson-baryon-loops regulator previously employed in the non-strange hidden charm sector, where a good reproduction of the properties of the newly discovered pentaquark states is obtained. We obtain five states of 1/2 − , four of 3/2 − and one of 5/2 − , which could be compared in the near future with forthcoming LHCb experiments. The 5/2 − , three of the 3/2 − and another three of the 1/2 − resonances are originated from isoscalarD ( * ) Ξ ′ c andD ( * ) Ξ * c interactions. They should be located just few MeV below the corresponding thresholds (4446, 4513, 4588 and 4655 MeV), and would be SU(3)-siblings of the isospin 1/2D ( * ) Σ ( * ) c quasibound states previously found, and that provided a robust theoretical description of the P c (4440), P c (4457) and P c (4312) LHCb exotic states. The another two 1/2 − and 3/2 − states obtained in this work are result of theD ( * ) Ξ c − D ( * ) s Λ c coupled-channels isoscalar interaction, are significantly broader than the others, with widths of the order of 15 MeV, beingD ( * ) s Λ c the dominant decay channel.

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Cited by 18 publications

References 39 publications

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Hidden charm pentaquark and Λ(1405) in the Λb0→ηcK−

Prediction of hidden charm strange molecular baryon states with heavy quark spin symmetry

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Cited by 18 publications

References 39 publications

$Λ_b$ decays into $Λ_c^*\ell\barν_\ell$ and $Λ_c^*π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^*\ell\barν_\ell$ and $Λ_c^*π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Hidden charm pentaquark and Λ(1405) in the Λb0→ηcK−

Prediction of hidden charm strange molecular baryon states with heavy quark spin symmetry

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Product

Resources

About

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry