Search for Narrow H gamma Resonances in Proton-Proton Collisions at root s=13 TeV
PHYSICAL REVIEW LETTERS, vol.122, no.8, 2019 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 122 Issue: 8
- Publication Date: 2019
- Doi Number: 10.1103/physrevlett.122.081804
- Journal Name: PHYSICAL REVIEW LETTERS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Çukurova University Affiliated: Yes
Abstract
A search for heavy, narrow resonances decaying to a Higgs boson and a photon (Hy) has been performed in proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb-1 collected with the CMS detector at the LHC in 2016. Events containing a photon and a Lorentz-boosted hadronically decaying Higgs boson reconstructed as a single, large-radius jet are considered, and the y jet invariant mass spectrum is analyzed for the presence of narrow resonances. To increase the sensitivity of the search, events are categorized depending on whether or not the large-radius jet can be identified as a result of the merging of two jets originating from b quarks. Results in both categories are found to agree with the predictions of the standard model. Upper limits on the production rate of Hy resonances are sct as a function of their mass in the range of 720-3250 GeV, representing thc most stringent constraints to date.