Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at $$ sqrt{textrm{s}} $$ = 13 TeV Journal Article uri icon

Overview

abstract

  • Abstract; ; A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair, ; ; $$ textrm{H}to textrm{aa}to textrm{b}overline{textrm{b}}textrm{b}overline{textrm{b}} $$; ; H; ; aa; ; b; ; b; ¯; ; b; ; b; ¯; ; ; ; . The analysis is performed using a data sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb; 1. To reduce the background from standard model processes, the search requires the Higgs boson to be produced in association with a leptonically decaying W or Z boson. The analysis probes the production of new light bosons in a 15 < m; a < 60 GeV mass range. Assuming the standard model predictions for the Higgs boson production cross sections for pp → WH and ZH, model independent upper limits at 95% confidence level are derived for the branching fraction ; ; $$ mathcal{B}left(textrm{H}to textrm{aa}to textrm{b}overline{textrm{b}}textrm{b}overline{textrm{b}}right) $$; ; B; ; ; H; ; aa; ; b; ; b; ¯; ; b; ; b; ¯; ; ; ; ; ; . The combined WH and ZH observed upper limit on the branching fraction ranges from 1.10 for m; a = 20 GeV to 0.36 for m; a = 60 GeV, complementing other measurements in the μμττ, ττττ and bbℓℓ ( = μ, τ) channels.

publication date

  • June 14, 2024

has restriction

  • gold

Date in CU Experts

  • June 26, 2024 1:48 AM

Full Author List

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

author count

  • 2348

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1029-8479

Additional Document Info

volume

  • 2024

issue

  • 6

number

  • 97