Physics at a High-Luminosity LHC with ATLAS

TL;DR

This paper discusses the expanded physics potential of the high-luminosity LHC with ATLAS, highlighting new research opportunities enabled by increased luminosity and planned upgrades.

Contribution

It provides preliminary studies on Higgs, new particles, and rare top decays demonstrating the enhanced physics reach of the high-luminosity LHC.

Findings

Increased integrated luminosity enables more precise Higgs measurements.

Enhanced sensitivity to new particles and rare processes.

Justifies upgrades to LHC and ATLAS detector.

Abstract

The physics accessible at the high-luminosity phase of the LHC extends well beyond that of the earlier LHC program. This white paper, submitted as input to the Snowmass Community Planning Study 2013, contains preliminary studies of selected topics, spanning from Higgs boson studies to new particle searches and rare top quark decays. They illustrate the substantially enhanced physics reach with an increased integrated luminosity of 3000 fb-1, and motivate the planned upgrades of the LHC machine and ATLAS detector.