Flavour tagging techniques for CPV studies in the $B_s$ system with ATLAS

Abstract

The sensitivity to $B_s$ meson mixing phenomena can be significantly improved by distinguishing the initial meson flavour. The flavour tagging techniques used in the ATLAS measurement of the angular amplitudes contributing to $B_s\to J/\psi \varphi$ decays are presented using 4.9 fb${}^{-1}$ of $pp$ data at $\sqrt{s}$ = 7 TeV from 2011. The methods, their performance and calibration on self-tagged $B^{\pm }\to J/\psi K^{\pm }$ data are shown.

Proceedings of the 50 years of CP violation conference, 10 -- 11 July, 2014, held at Queen Mary University of London, UK

References in corpus (1)

• Flavour tagged time dependent angular analysis of the $B_s\to J/\psi \varphi$ decay and extraction of $\Delta \Gamma$ and the weak phase ${\varphi }_s$ in ATLAS