Header

UZH-Logo

Maintenance Infos

Searching for low-mass resonances decaying into W bosons


Coloretti, Guglielmo; Crivellin, Andreas; Bhattacharya, Srimoy; Mellado, Bruce (2023). Searching for low-mass resonances decaying into W bosons. Physical review D, 108(3):035026.

Abstract

In recent years, several hints for new scalar particles have been observed by the Large Hadron Collider at CERN. In this context, we recast and combine the CMS and ATLAS analyses of the Standard Model Higgs boson decaying to a pair of W bosons in order to search for low-mass resonances. We provide limits on the corresponding cross section assuming direct production via gluon fusion. For the whole range of masses, we consider (90–200 GeV); the observed limit on the cross section turns out to be weaker than the expected one. Furthermore, at ≈95  GeV, the limit is weakest, and a new scalar decaying into a pair of W bosons (which subsequently decay leptonically) with a cross section ≈0.5  pb is preferred over the Standard Model hypothesis by ≳2.5σ. In light of the previously existing excesses in other channels at similar masses, this strengthens the case for such a new Higgs boson and gives room for the scalar candidate at 95 GeV decaying into W bosons.

Abstract

In recent years, several hints for new scalar particles have been observed by the Large Hadron Collider at CERN. In this context, we recast and combine the CMS and ATLAS analyses of the Standard Model Higgs boson decaying to a pair of W bosons in order to search for low-mass resonances. We provide limits on the corresponding cross section assuming direct production via gluon fusion. For the whole range of masses, we consider (90–200 GeV); the observed limit on the cross section turns out to be weaker than the expected one. Furthermore, at ≈95  GeV, the limit is weakest, and a new scalar decaying into a pair of W bosons (which subsequently decay leptonically) with a cross section ≈0.5  pb is preferred over the Standard Model hypothesis by ≳2.5σ. In light of the previously existing excesses in other channels at similar masses, this strengthens the case for such a new Higgs boson and gives room for the scalar candidate at 95 GeV decaying into W bosons.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

0 downloads since deposited on 29 Dec 2023
0 downloads since 12 months

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:17 August 2023
Deposited On:29 Dec 2023 10:02
Last Modified:28 Jun 2024 03:31
Publisher:American Physical Society
ISSN:2470-0010
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1103/physrevd.108.035026
Project Information:
  • : FunderDepartment of Science and Innovation, South Africa
  • : Grant ID
  • : Project Title
  • : FunderUniversity of the Witwatersrand, Johannesburg
  • : Grant ID
  • : Project Title
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)