Measurements of b hadron lifetimes and effective lifetimes at LHCb

Abstract

Precision measurements of b-hadron lifetimes are a key goal of the LHCb experiment. In the B_s sector, the measurement of the effective lifetimes for B_s mesons decaying to CP-odd, CP-even and flavor specific final states are essential for constraining the B_s mixing parameters, $\Delta {\Gamma }_s$, the average width, ${\Gamma }_s$, and the CP-violating phase, ${\varphi }_s$. Measurements of $b$ baryon lifetimes are also important to test theoretical models. We present the latest results from LHCb on these topics.

Presented at DPF 2013, Santa Cruz, California, November 13-17 2013, 8 pages, 6 figures

References in corpus (2)

• Measurement of CP violation and the B_s^0 meson decay width difference with B_s^0\to J/ψK^+ K^- and B_s^0\to J/ψπ^+π^- decays
• Measurement of the CP-violating phase ${\varphi }_s$ in ${\overline{B}}_s^0\to J/\psi {\pi }^{+}{\pi }^{-}$ decays