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14 papers · 2 filters
Non-Mesonic Weak Decay of Lambda-hypernuclei: a new determination of the Gn/Gp ratio
G. Garbarino, A. Parreno, A. Ramos
Theoretical descriptions of the non-mesonic weak decay of Lambda-hypernuclei are unable to reproduce the experimental values of the ratio Gn/Gp=G(Lambda n -> nn)/G(Lambda p -> np).…
Dynamical Generation of Hyperon Resonances
A. Ramos, E. Oset, C. Bennhold +2
In this talk we report on how, using a chiral unitary approach for the meson--baryon interactions, two octets of baryon states and a singlet are generated dynamically,…
In-medium effects on the ratio at GSI
L. Tolos, A. Polls, A. Ramos +1
The in-medium modifications on the ratio produced at GSI are studied. Particular attention is paid to the properties of antikaons, which determine the chemical potential…
An EFT for the weak interaction
A. Parreno, C. Bennhold, B. R. Holstein
The nonleptonic weak interaction, responsible for the dominant, nonmesonic decay of all but the lightest hypernuclei, is studied in the framework of an effective fiel…
Towards the solution of the Gn/Gp Puzzle in the Non-Mesonic Weak Decay of Lambda-Hypernuclei
G. Garbarino, A. Parreno, A. Ramos
One of the main open problems in the physics of Lambda-hypernuclei is the lack of a sound theoretical interpretation of the large experimental values for the ratio Gn/Gp=G(Lambda n…
Exploring Hyperons and Hypernuclei with Lattice QCD
S. R. Beane, P. F. Bedaque, A. Parreno +1
In this work we outline a program for lattice QCD that would provide a first step toward understanding the strong and weak interactions of strange baryons. The study of hypernuclea…