Projected Performance of an Upgraded CMS Detector at the LHC and HL-LHC: Contribution to the Snowmass Process

TL;DR

This paper evaluates the projected performance of the upgraded CMS detector at the LHC and HL-LHC, highlighting its capabilities for precision measurements and new physics discoveries with large datasets.

Contribution

It provides detailed projections of CMS detector performance and physics reach for future high-luminosity runs, contributing to the Snowmass community planning.

Findings

High precision in Higgs boson property measurements

Enhanced discovery potential for beyond Standard Model particles

Significant improvements in heavy ion physics capabilities

Abstract

The physics reach of the CMS detector achievable with 300(0) inverse femtobarns of proton-proton collisions recorded at sqrt(s)=14 TeV is presented. Ultimate precision on measurements of Higgs boson properties, top quark physics, and electroweak processes are discussed, as well as the discovery potential for new particles beyond the standard model. In addition, the potential for future heavy ion physics is presented. This document has been submitted as a white paper to the Snowmass process, an exercise initiated by the American Physical Society's Division of Particles and Fields to assess the long-term physics aspirations of the US high energy physics community.