Recent CMS Results

TL;DR

The CMS experiment at CERN has achieved significant results including the discovery of a Higgs-like particle, precise top quark mass measurement, and constraints on rare B meson decays, advancing our understanding of particle physics.

Contribution

This paper summarizes recent groundbreaking results from CMS, including the Higgs boson discovery, top quark mass measurement, and limits on rare decay processes, providing key insights into the standard model and beyond.

Findings

Discovery of a Higgs-like particle at 125.3 GeV.

Top quark mass measured as 173.49 GeV.

Limits set on rare B meson decays.

Abstract

The CMS experiment obtained a large number of groundbreaking results from the analysis of 7- and 8-TeV proton-proton collisions produced so far by the Large Hadron Collider at CERN. In this brief summary only a sample of those results will be discussed. A new particle with mass m(H) = 125.3 +- 0.4(stat.) +- 0.5(syst.) GeV and characteristics compatible with those expected for a standard model Higgs boson has been observed in its decays to photon pairs, WW pairs, and ZZ pairs. Searches for the rare decays B_d -> mu mu and B_s -> mu mu have allowed to set limits on the branching fractions which are close to standard model predictions, strongly constraining new physics models. The top quark has been studied with great detail, obtaining among other results the world's best measurement of its mass as m(top) = 173.49 +- 0.43(stat. + JES) +- 0.98(syst.) GeV. New physics models have been strongly constrained with the available data.