Search for a new resonance decaying into two spin-0 bosons in a final state with two photons and two bottom quarks in proton-proton collisions at $$ sqrt{s} $$ = 13 TeV Journal Article uri icon

Overview

abstract

  • Abstract; A search for a new boson X is presented using CERN LHC proton-proton collision data collected by the CMS experiment at $$ sqrt{s} $$; ; s; ; = 13 TeV in 2016–2018, and corresponding to an integrated luminosity of 138 fb1. The resonance X decays into either a pair of Higgs bosons HH of mass 125 GeV or an H and a new spin-0 boson Y. One H subsequently decays to a pair of photons, and the second H or Y, to a pair of bottom quarks. The explored mass ranges of X are 260–1000 GeV and 300–1000 GeV, for decays to HH and to HY, respectively, with the Y mass range being 90–800 GeV. For a spin-0 X hypothesis, the 95% confidence level upper limit on the product of its production cross section and decay branching fraction is observed to be within 0.90–0.04 fb, depending on the masses of X and Y. The largest deviation from the background-only hypothesis with a local (global) significance of 3.8 (below 2.8) standard deviations is observed for X and Y masses of 650 and 90 GeV, respectively. The limits are interpreted using several models of new physics.

publication date

  • May 29, 2024

has restriction

  • gold

Date in CU Experts

  • June 12, 2024 12:55 PM

Full Author List

  • Tumasyan A; Adam W; Andrejkovic JW; Bergauer T; Chatterjee S; Damanakis K; Dragicevic M; Escalante Del Valle A; Hussain PS; Jeitler M

author count

  • 2339

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1029-8479

Additional Document Info

volume

  • 2024

issue

  • 5

number

  • 316