Àngels Ramos

activity

20012022

most citedA critical view on the deeply bound K^- pp system

145 citations · 202 across the 11 of their papers we have counts for

collaborators

11 papers

nucl-ex2022

First Simultaneous K $^{-}$ p $\to (Σ^{0} /Λ) π^{0}$ Cross Sections Measurements at 98 MeV/c

Kristian Piscicchia, Magdalena Skurzok, Michael Cargnelli +24

We report the first simultaneous and independent measurements of the K $^{-}$ p $\to Σ^{0} π^{0}$ and K $^{-}$ p $\to Λ π^{0}$ cross sections around 100 MeV/c kaon m…

hep-ph2020★ 10 cited

The molecular nature of some exotic hadrons

A. Ramos, A. Feijoo, Q. Llorens +1

The exciting discovery by LHCb of the $P_{c} (4312)^{+}$ and $P_{c} (4450)^{+}$ pentaquarks, or the suggestion of a tetraquark nature for the $Z_{c} (3900)$ state seen at BESIII and Belle, have…

nucl-th2019★ 1 cited

Further Theoretical Analysis on the $K^{-}^{3} He \to Λ p n$ Reaction for the $K ˉ N N$ Bound-State Search in the J-PARC E15 Experiment

Takayasu Sekihara, Eulogio Oset, Angels Ramos

Based on the scenario that a $K ˉ N N$ bound state is generated and it eventually decays into $Λ p$ , we calculate the cross section of the $K^{-}^{3} He \to Λ p n$ reac…

nucl-th2018★ 1 cited

Theoretical analysis on the $K^{-}^{3} He \to Λ p n$ reaction for the $K ˉ N N$ bound-state search in the J-PARC E15 experiment

Takayasu Sekihara, Eulogio Oset, Angels Ramos

We theoretically analyze the $K^{-}^{3} He \to Λ p n$ reaction for the $K ˉ N N$ bound-state search in the J-PARC E15 experiment. We find that, by detecting a fast and…

hep-ph2015★ 35 cited

The $Λ_{b} \to J / ψ K Ξ$ decay and the higher order chiral terms of the meson baryon interaction

A. Feijoo, V. K. Magas, A. Ramos +1

We study the weak decay of the $Λ_{b}$ into $J / ψ K Ξ$ and $J / ψ η Λ$ states, and relate these processes to the $Λ_{b} \to J / ψ K ˉ N$ decay mode. The elementary weak transitio…

nucl-th2015★ 2 cited

The $K ˉ N \to K Ξ$ reaction in coupled channel chiral models up to next-to-leading order

A. Feijoo, V. K. Magas, A. Ramos

The meson-baryon interaction in s-wave in the strangeness S=-1 sector has been studied, employing a chiral SU(3) Lagrangian up to next-to-leading order (NLO) and implementing unita…

hep-ph2014★ 7 cited

The $K ˉ N \to K Ξ$ reaction in coupled channel chiral models up to next-to-leading order

V. K. Magas, A. Feijoo, A. Ramos

We study the meson-baryon interaction in S-wave in the strangeness S=-1 sector using a chiral unitary approach based on a next-to-leading order chiral SU(3) Lagrangian. We fit our…

hep-ph2013★ 1 cited

Effects of the next-to-leading order terms in the chiral SU(3) Lagrangian on the strangeness -1 s-wave meson-baryon interactions

V. K. Magas, A. Feijoo, A. Ramos

The meson-baryon interactions in s-wave in the strangeness S=-1 sector are studied using a chiral unitarity approach based on the next-to-leading order chiral SU(3) Lagrangian. The…

nucl-th2006★ 145 cited

A critical view on the deeply bound K^- pp system

V. K. Magas, E. Oset, A. Ramos +1

We briefly review the situation around the claimed deeply bound K^- states in different recent experiments and concentrate particularly on the state K^- pp advocated by the FINUDA…

hep-ph2005

On the nature of the Lambda(1405) as a superposition of two states

E. Oset, V. K. Magas, Ramos

We use recent data on the $K^{-} p \to π^{0} π^{0} Σ^{0}$ reaction with the $π^{0} Σ^{0}$ mass distribution of forming the $Λ (1405)$ with a peak at 1420 MeV and a relatively narrow width of $Γ…

nucl-th2001

Dynamical meson-baryon resonances with chiral Lagrangians

A. Ramos, A. Parreno, J. C. Nacher +2

The s-wave meson-baryon interaction is studied using the lowest-order chiral Lagrangian in a unitary coupled-channels Bethe-Salpeter equation. In the strangeness $S = - 1$ sector the…

First Simultaneous K−p →(Σ0/Λ)π0 Cross Sections Measurements at 98 MeV/c

The molecular nature of some exotic hadrons

Further Theoretical Analysis on the K−3He→Λpn Reaction for the KˉNN Bound-State Search in the J-PARC E15 Experiment

Theoretical analysis on the K−3He→Λpn reaction for the KˉNN bound-state search in the J-PARC E15 experiment

The Λb​→J/ψ K Ξ decay and the higher order chiral terms of the meson baryon interaction

The KˉN→KΞ reaction in coupled channel chiral models up to next-to-leading order

The KˉN→KΞ reaction in coupled channel chiral models up to next-to-leading order

Effects of the next-to-leading order terms in the chiral SU(3) Lagrangian on the strangeness -1 s-wave meson-baryon interactions

A critical view on the deeply bound K^- pp system

On the nature of the Lambda(1405) as a superposition of two states

Dynamical meson-baryon resonances with chiral Lagrangians

First Simultaneous K $^{-}$ p $\to (Σ^{0} /Λ) π^{0}$ Cross Sections Measurements at 98 MeV/c

Further Theoretical Analysis on the $K^{-}^{3} He \to Λ p n$ Reaction for the $K ˉ N N$ Bound-State Search in the J-PARC E15 Experiment

Theoretical analysis on the $K^{-}^{3} He \to Λ p n$ reaction for the $K ˉ N N$ bound-state search in the J-PARC E15 experiment

The $Λ_{b} \to J / ψ K Ξ$ decay and the higher order chiral terms of the meson baryon interaction

The $K ˉ N \to K Ξ$ reaction in coupled channel chiral models up to next-to-leading order

The $K ˉ N \to K Ξ$ reaction in coupled channel chiral models up to next-to-leading order