Pionic decay of Lambda Hypernuclei in a Continuum Shell Model

Abstract

We evaluate pionic decay widths of Lambda hypernuclei using a shell model for, both the nuclear bound and the continuum nucleon wave functions in the final state, and distorted waves for the outgoing pion. An excellent agreement with the recent KEK measurement of ${\pi }^{-}$-decay widths of ${}_{\Lambda }^{12}$C and ${}_{\Lambda }^{28}$Si is found. Besides, results for ${}_{\Lambda }^{56}$Fe are consistent with the existing upper bound.

19 pages, 4 figures, 7 tables, revised version to be published in Phys. Rev. C

References in corpus (8)

• Weak Decay of Lambda Hypernuclei
• Parity violation in quasielastic electron scattering from closed-shell nuclei
• Weak decays of medium and heavy Lambda-hypernuclei
• What Does Free Space Lambda-Lambda Interaction Predict for Lambda-Lambda Hypernuclei?
• Radiative pion capture in nuclei: a continuum shell-model approach
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• Theoretical study of neutrino-induced coherent pion production off nuclei at T2K and MiniBooNE energies
• In medium dispersion relation effects in nuclear inclusive reactions at intermediate and low energies
• Theoretical uncertainties on quasielastic charged-current neutrino-nucleus cross sections
• Nuclear effects on lepton polarization in charged-current quasielastic neutrino scattering
• Equivalence between local Fermi gas and shell models in inclusive muon capture from nuclei