10.1007-JHEP03(2015)088.pdf (1.01 MB)
Search for charged Higgs bosons decaying via H± ? t±? in fully hadronic final states using pp collision data at s v s = 8 TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 05:46 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, The ATLAS CollaborationThe results of a search for charged Higgs bosons decaying to a t lepton and a neutrino, H±?t±?, are presented. The analysis is based on 19.5 fb-¹ of proton-proton collision data at vs=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. Charged Higgs bosons are searched for in events consistent with top-quark pair production or in associated production with a top quark, depending on the considered H± mass. The final state is characterised by the presence of a hadronic t decay, missing transverse momentum, b-tagged jets, a hadronically decaying W boson, and the absence of any isolated electrons or muons with high transverse momenta. The data are consistent with the expected background from Standard Model processes. A statistical analysis leads to 95% confidence-level upper limits on the product of branching ratios B(t???bH±)?×?B(H±???t±?), between 0.23% and 1.3% for charged Higgs boson masses in the range 80-160GeV. It also leads to 95% confidence-level upper limits on the production cross section times branching ratio, s(pp???tH±?+?X)?×?B(H±?? t±?), between 0.76 pb and 4.5 fb, for charged Higgs boson masses ranging from 180 GeV to 1000 GeV. In the context of different scenarios of the Minimal Supersymmetric Standard Model, these results exclude nearly all values of tan ß above one for charged Higgs boson masses between 80 GeV and 160 GeV, and exclude a region of parameter space with high tan ß for H± masses between 200 GeV and 250 GeV.
Funding
ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1
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Publication status
- Published
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- Published version
Journal
Journal of High Energy PhysicsISSN
1029-8479Publisher
Springer VerlagExternal DOI
Issue
3Volume
2015Article number
a88Department 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
2017-04-12First Open Access (FOA) Date
2017-04-12First Compliant Deposit (FCD) Date
2017-04-11Usage metrics
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