B Physics at D0

TL;DR

This paper reports on early B physics results from the D0 detector at Fermilab's Tevatron, including studies of exotic states, decay processes, lifetimes, oscillations, and rare decays using initial Run II data.

Contribution

It presents new measurements and observations in B physics using the upgraded D0 detector with the first 250 pb^-1 of data from Run II.

Findings

Observation of the X(3872) state

Measurements of B hadron lifetimes

Results on B_s -> mu^+ mu^- decay

Abstract

The Fermilab Tevatron (p pbar), operating at sqrt(s)=1.96 TeV, is a rich source of B hadrons. The large acceptance in terms of rapidity and transverse momentum of the charged particle tracking system and the muon system make the upgraded Run II D0 detector an excellent tool for B physics. In this article, we report on selected physics results based on the first 250 pb^-1 of Run II data. This includes results on the X(3872) state, semileptonic B decays, B hadron lifetimes, flavour oscillations, and the rare decay B_s -> mu^+ mu^-.