CP violating dimuon charge asymmetry in general left-right models

TL;DR

This paper investigates how right-handed current contributions in general left-right models could explain the significant deviation observed in dimuon charge asymmetry measurements at Tevatron, challenging the Standard Model.

Contribution

It introduces a comprehensive analysis of right-handed currents in left-right models without manifest symmetry to account for experimental anomalies in B meson mixing.

Findings

Identifies parameter space consistent with experimental data

Shows potential of right-handed currents to explain dimuon asymmetry

Provides constraints on new physics contributions in left-right models

Abstract

The recently measured charge asymmetry of like-sign dimuon events by the D0 collaboration at Tevatron shows the 3.9 \sigma\ deviation from the standard model prediction. In order to solve this mismatch, we investigate the right-handed current contributions to $B_s-\bar{B}_s$ and $B_d-\bar{B}_d$ mixings which are the major source of the like-sign dimuon events in $b \bar{b}$ production in general left-right models without imposing manifest or pseudo-manifest left-right symmetry. We find the allowed region of new physics parameters satisfying the current experimental data.