Current constraints on the EFT for the ΛN --> N N transition

Abstract

The relation between the low energy constants appearing in the effective field theory description of the ΛN --> N N transition potential and the parameters of the one-meson-exchange model previously developed are obtained. We extract the relative importance of the different exchange mechanisms included in the meson picture by means of a comparison to the corresponding operational structures appearing in the effective approach. The ability of this procedure to obtain the weak baryon-baryon-meson couplings for a possible scalar exchange is also discussed.

10 pages, 6 figures

References in corpus (11)

• Final State Interactions in Hypernuclear Decay
• Towards the solution of the Gn/Gp Puzzle in the Non-Mesonic Weak Decay of Lambda-Hypernuclei
• Coincidence Measurement of the Nonmesonic Weak Decay of ^{12}_{Lambda}C
• Exclusive Measurement of the Nonmesonic Weak Decay of ^{5}_ΛHe Hypernucleus
• Nucleon-Nucleon Coincidence Spectra in the Non-Mesonic Weak Decay of Lambda-Hypernuclei and the n/p Puzzle
• Sigma Exchange in the Nonmesonic Decays of Light Hypernuclei and Violation of the Delta I=1/2 Rule
• $\Lambda N\to NN$ weak interaction in effective field theory
• Two-pion-exchange in the non-mesonic weak decay of $\Lambda$-hypernuclei
• $\sigma$ meson exchange effect on nonmesonic hypernuclear weak decay observables
• An EFT for the weak $\Lambda N$ interaction
• Chiral symmetry and meson exchange approach to hypernuclear decay

Cited by in corpus (6)

• Review of the electric dipole moment of light nuclei
• Electric dipole moment of the deuteron in the standard model with $NN-\Lambda N-\Sigma N$ coupling
• One-loop contributions in the EFT for the $\Lambda N\to NN$ transition
• Hypernuclear constraints on the existence and lifetime of a deeply bound $H$ dibaryon
• Next-to-leading order effective field theory $\Lambda N\to NN$ potential in coordinate space
• Effects of $\Lambda \Lambda -\Xi N$ mixing in the decay of $S=-2$ hypernuclei