# The compatibility of LHC Run 1 data with a heavy scalar of mass around 270\,GeV

## TL;DR

This paper investigates potential signals of a heavy scalar particle around 270 GeV in LHC Run 1 data, suggesting a possible three sigma indication of its existence based on excesses observed.

## Contribution

It introduces a minimalistic model to interpret excesses as a heavy scalar and combines results to identify a best fit mass around 272 GeV.

## Key findings

- Best fit scalar mass at 272$^{+12}_{-9}$ GeV
- Three sigma statistical significance for the excess
- Potential for discovery in future LHC runs

## Abstract

The first run of the LHC was successful in that it saw the discovery of the elusive Higgs boson, a particle that is consistent with the SM hypothesis. There are a number of excesses in Run 1 ATLAS and CMS results which can be interpreted as being due to the existence of another heavier scalar particle. This particle has decay modes which we have studied using LHC Run 1 data. Using a minimalistic model, we can predict the kinematics of these final states and compare the prediction against data directly. A statistical combination of these results shows that a best fit point is found for a heavy scalar having a mass of 272$^{+12}_{-9}$\,GeV. This result has been quantified as a three sigma effect, based on analyses which are not necessarily optimized for the search of a heavy scalar. The smoking guns for the discovery of this new heavy scalar and the prospects for Run 2 are discussed.