Measurement of the relative branching ratio of B^0_s to J/psi f_{0}(980) to B_{s}{0} to J/psi phi

TL;DR

This paper measures the ratio of branching fractions of B_s^0 decays to J/psi f_0(980) and J/psi phi, providing insights into CP eigenstates relevant for future CP violation studies.

Contribution

The first measurement of the relative branching ratio of B_s^0 to J/psi f_0(980) compared to J/psi phi using Tevatron data.

Findings

R_{f_{0}/phi} = 0.275 +- 0.041 (stat) +- 0.061 (syst)

Provides a key input for CP violation research in B_s^0 decays

Supports future studies of CP-odd eigenstates in B_s^0 system.

Abstract

We present a measurement of the relative branching fraction, R_{f_{0}/phi}, of B_{s}^{0} to J/\psi f_{0}(980), with f_{0}(980) to pi^+ pi^-, to the process B_{s}^{0} to J/psi phi, with phi to K^+K^-. The J/psi f_{0}(980) final state corresponds to a CP-odd eigenstate of B_{s}^{0} that could be of interest in future studies of CP violation. Using approximately 8fb^-1 of data recorded with the D0 detector at the Fermilab Tevatron Collider, we find R_{f_{0}/phi} = 0.275 +- 0.041(stat) +- 0.061(syst).