Heavy-Flavor Results from CMS

TL;DR

This paper reports on CMS measurements of heavy-flavor particle decays and production properties, providing tests of the Standard Model and insights into QCD, including the first observation of certain baryons and meson decay modes.

Contribution

It presents new experimental results on heavy-flavor decays and baryon production from CMS at 7 TeV, including first observations of the excited b baryon Xib*0 and specific Bc decay modes.

Findings

First observation of the excited b baryon Xib*0

Observation of two Bc meson decay modes

Production measurements of Lambda_b baryon

Abstract

Heavy-flavor physics offers the opportunity to make indirect tests of physics beyond the Standard Model through precision measurements, and of quantum chromodynamics (QCD) through particle production studies. The rare decays B0s, B0 and D0 to dimuon final states are excellent tests of the flavor sector of the Standard Model and are sensitive to new physics. We report on studies of these decays and present the first observation of the excited b baryon Xib*0 in strong decays to Xib and a charged pion, the observation of two Bc meson decay modes and production properties of the Lambda_b baryon, all performed with the CMS experiment in pp collisions at sqrt(s) = 7 TeV.