Search for narrow resonances decaying to dijets in proton-proton collisions at sqrt(s) = 13 TeV

TL;DR

This paper reports a search for narrow resonances decaying into dijets in proton-proton collisions at 13 TeV, finding no evidence of new particles and setting new exclusion limits on various theoretical models.

Contribution

First search at 13 TeV for narrow dijet resonances using CMS data, establishing the most stringent limits to date on several hypothetical particles.

Findings

No evidence for resonant particles observed.

Excluded string resonances below 7.0 TeV.

Set new limits on various beyond Standard Model particles.

Abstract

A search for narrow resonances in proton-proton collisions at sqrt(s) = 13 TeV is presented. The invariant mass distribution of the two leading jets is measured with the CMS detector using a data set corresponding to an integrated luminosity of 2.4 inverse femtobarns. The highest observed dijet mass is 6.1 TeV. The distribution is smooth and no evidence for resonant particles is observed. Upper limits at 95% confidence level are set on the production cross section for narrow resonances with masses above 1.5 TeV. When interpreted in the context of specific models, the limits exclude string resonances with masses below 7.0 TeV, scalar diquarks below 6.0 TeV, axigluons and colorons below 5.1 TeV, excited quarks below 5.0 TeV, color-octet scalars below 3.1 TeV, and W' bosons below 2.6 TeV. These results significantly extend previously published limits.