Strangeness Modes in Nuclei Tested by Anti-Neutrinos

Abstract

Production of negative strangeness in reactions of inelastic anti-neutrino scattering on a nucleus provides information on the modification of strange degrees of freedom in nuclear matter. We calculate cross-sections of the reaction channels ${\bar{\nu }}_{e(\mu )}\to e^{+}({\mu }^{+})+K^{-}$ and $\barν_{e(μ)} + p \to \Lb + e^+(μ^+)$ and investigate their sensitivity to the medium effects. In particular, we consider effects induced by the presence of a low-energy excitation mode in the $K^{-}$ spectrum, associated with the correlated $\Lambda$-particle and proton-hole states, and the renormalization of the weak interaction in medium. In order to avoid double counting, various contributions to anti-neutrino scattering are classified with the help of the optical theorem, formulated within the non-equilibrium Green's function technique.

19 pages, 3 figures, feynMF diagrams

References in corpus (3)

• Nuclear kaon dynamics
• Analysis of Kaon Production at SIS Energies
• Coherent pion production in neutrino nucleus collision in the 1 GeV region

Cited by in corpus (6)

• Neutrino emission due to Cooper-pair recombination in neutron stars revisited
• Negative Kaons in Dense Baryonic Matter
• Medium Effects in Cooling of Neutron Stars and $3P_2$ Neutron Gap
• Time delays and advances in classical and quantum systems
• Superfluid nucleon matter in and out of equilibrium and weak interactions
• Medium effects in the pion pole mechanism (photon photon --> pion-zero --> neutrino-R antineutrino-L (neutrino-L antineutrino-R)) of neutron star cooling