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10.1103-PhysRevD.92.052002.pdf (768.28 kB)

Search for Higgs bosons decaying to aa in the µµtt final state in pp collisions at vs=8??TeV with the ATLAS experiment

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posted on 2023-06-09, 05:52 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, et al. The ATLAS Collaboration
A search for the decay to a pair of new particles of either the 125 GeV Higgs boson (h) or a second charge parity (CP)-even Higgs boson (H) is presented. The data set corresponds to an integrated luminosity of 20.3??fb-1 of pp collisions at vs=8??TeV recorded by the ATLAS experiment at the LHC in 2012. The search was done in the context of the next-to-minimal supersymmetric standard model, in which the new particles are the lightest neutral pseudoscalar Higgs bosons (a). One of the two a bosons is required to decay to two muons while the other is required to decay to two t leptons. No significant excess is observed above the expected backgrounds in the dimuon invariant mass range from 3.7 to 50 GeV. Upper limits are placed on the production of h?aa relative to the standard model gg?h production, assuming no coupling of the a boson to quarks. The most stringent limit is placed at 3.5% for ma=3.75??GeV. Upper limits are also placed on the production cross section of H?aa from 2.33 to 0.72 pb, for fixed ma=5??GeV with mH ranging from 100 to 500 GeV.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

2470-0010

Publisher

American Physical Society

Issue

5

Volume

92

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-04-25

First Open Access (FOA) Date

2017-04-25

First Compliant Deposit (FCD) Date

2017-04-25

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