Measurement of Bc Mass and Lifetime at LHCb

TL;DR

This paper reports on the measurement of the Bc meson mass and lifetime at LHCb using the decay channel Bc± to J/ψ π±, with high precision expected from 1 fb⁻¹ of data.

Contribution

The study provides the first detailed expected precision measurements of Bc meson mass and lifetime at LHCb using the decay Bc± to J/ψ π±.

Findings

Expected statistical error below 2 MeV/c² for mass

Expected statistical error below 30 fs for lifetime

Approximately 310 signal events expected in 1 fb⁻¹ of data

Abstract

The $B_c^\pm$ mass and lifetime measurements using the decay $B_c^\pm \to J/\psi \pi^\pm$ at the LHCb experiment were studied. About 310 signal events are expected for a data set which corresponds to an integrated luminosity of 1 fb$^{-1}$, with a $B/S$ ratio equal to 2. Based on these data, the $B_c^\pm$ mass and lifetime can be measured with expected statistical errors below 2 MeV/$c^2$ and 30 fs, respectively.