Exclusive Lambda_b -> Lambda l^+ l^- decay in two Higgs doublet model

TL;DR

This paper investigates the rare Lambda_b -> Lambda l^+ l^- decay within a two Higgs doublet model, focusing on CP violation effects and how they can serve as indicators of new physics beyond the Standard Model.

Contribution

It provides a detailed analysis of CP asymmetry, polarization, and decay width in the context of the general two Higgs doublet model, highlighting the sensitivity of CP asymmetry as a probe.

Findings

CP asymmetry is highly sensitive to model III parameters

Polarization parameters show significant deviations from Standard Model predictions

Decay width calculations support the potential for new physics detection

Abstract

Rare Lambda_b -> Lambda l^+ l^- decay is investigated in framework of general two Higgs doublet model, in which a new source of CP violation exists (model III). The polarization parameter, CP asymmetry and decay width are calculated. It is shown that CP asymmetry is a very sensitive tool for establishing model III.