Higgs and new physics at high energy

TL;DR

This paper reviews the discovery and characterization of the Higgs boson at the LHC, focusing on measurements of its properties and implications for new physics beyond the Standard Model.

Contribution

It provides a comprehensive review of the Higgs boson measurements, including mass, spin, couplings, and limits on new physics, based on LHC Run-I data.

Findings

Higgs boson mass and spin measured with high precision

Couplings scale factors consistent with Standard Model predictions

Limits set on new physics scenarios from Higgs data

Abstract

The observation of a new particle in the search for the Standard Model (SM) Higgs boson at the LHC, reported by the ATLAS and CMS collaborations, is a milestone in the quest to understand electroweak symmetry breaking. The evidence at the level of 5 $\sigma$ for a Higgs boson-like particle has been published by both experiments after a preliminary analysis of the data from the LHC Run-I. Precision measurements of the new particle are of critical importance. This document reviews the mass and spin measurement, the couplings scale factor measurements and the limits on new physics derived from these results.