Search for an additional, heavy Higgs boson in the [Formula: see text] decay channel at [Formula: see text] in [Formula: see text] collision data with the ATLAS detector.
Eur Phys J C Part Fields
; 76: 45, 2016.
Article
in En
| MEDLINE
| ID: mdl-26949371
ABSTRACT
A search is presented for a high-mass Higgs boson in the [Formula see text], [Formula see text], [Formula see text], and [Formula see text] decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton-proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb[Formula see text]. The results of the search are interpreted in the scenario of a heavy Higgs boson with a width that is small compared with the experimental mass resolution. The Higgs boson mass range considered extends up to [Formula see text] for all four decay modes and down to as low as 140 [Formula see text], depending on the decay mode. No significant excess of events over the Standard Model prediction is found. A simultaneous fit to the four decay modes yields upper limits on the production cross-section of a heavy Higgs boson times the branching ratio to [Formula see text] boson pairs. 95 % confidence level upper limits range from 0.53 pb at [Formula see text] GeV to 0.008 pb at [Formula see text] GeV for the gluon-fusion production mode and from 0.31 pb at [Formula see text] GeV to 0.009 pb at [Formula see text] GeV for the vector-boson-fusion production mode. The results are also interpreted in the context of Type-I and Type-II two-Higgs-doublet models.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Type of study:
Prognostic_studies
Language:
En
Journal:
Eur Phys J C Part Fields
Year:
2016
Document type:
Article
Affiliation country: