Using Λc+ → pK- π+ as a spin polarimeter

Polarization transfer measurement plays an important role in the search for new physics processes in charmed baryon decays. The measurement of the Lambda(+)(c) -> pK(-)pi(+) decay is suggested as a spin polarimeter. A general description of the decay is developed using Euler angles, and the polarization parameters are derived. Its relationship with parity violation is found using the phenomenological amplitude model. A Monte-Carlo simulation is performed, and the results show that charmed baryon polarization is well determined using a set of Monte-Carlo events with selected asymmetry parameters. The experimental measurement of these asymmetry parameters is suggested.

Automated summary

This paper discusses the importance of polarization transfer measurement in the search for new physics processes in charmed baryon decays, and suggests using the Lambda(+)(c) -> pK(-)pi(+) decay for spin polarization measurement. A general description of the decay is developed using Euler angles, and the polarization parameters are derived using a phenomenological amplitude model. A Monte-Carlo simulation is performed to determine the polarization of charmed baryons using selected asymmetry parameters.