Strange Particle Production Via The Weak Interaction

TL;DR

This paper investigates the production of strange particles via neutrino-induced weak interactions near threshold energies, developing a new theoretical framework and analyzing polarization effects in specific processes.

Contribution

It introduces a novel representation of the weak hadronic current with eighteen invariant amplitudes and applies the Born approximation within Cabibbo and SU(3) symmetry frameworks.

Findings

Differential cross sections are calculated for unpolarized baryons.

Sensitivity of cross sections to initial and final state polarizations is analyzed.

Theoretical predictions are provided for specific weak interaction processes.

Abstract

The differential cross sections for the neutrino-induced weak charged current production of strange particles in the threshold energy region are presented. The general representation of the weak hadronic current is newly developed in terms of eighteen unknown invariant amplitudes to parametrize the hadron vertex. The Born term approximation is used for the numerical calculations in the framework of the Cabibbo theory and SU(3) symmetry. For unpolarized octet baryons four processes are investigated, whereas in the case of polarized baryons only one process is chosen to study the sensitivity of the differential cross section to the various polarizations of the initial state nucleon and the final state hyperon.