Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/101869
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | The ATLAS Collaboration, | - |
dc.contributor.author | Aad, G. | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | The Journal of High Energy Physics, 2013; 2013(3):076-1-076-35 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | http://hdl.handle.net/2440/101869 | - |
dc.description.abstract | In several extensions of the Standard Model, the top quark can decay into a bottom quark and a light charged Higgs boson H+, t → bH+, in addition to the Standard Model decay t → bW. Since W bosons decay to the three lepton generations equally, while H+ maypredominantlydecayinto τν, charged Higgs bosons can be searched for using the violation of lepton universality in top quark decays. The analysis in this paper is based on 4.6 fb−1 of proton-proton collision data at s√=7 TeV collected by the ATLAS experiment at the Large Hadron Collider. Signatures containing leptons (e or μ) and/or a hadronically decaying τ (τhad) are used. Event yield ratios between e + τhad and e + μ, as well as between μ + τhad andμ + e, final states are measured in the data and compared to predictions from simulations. This ratio-based method reduces the impact of systematic uncertainties in the analysis. No significant deviation from the Standard Model predictions is observed. With the assumption that the branching fraction B (H+ → τν) is 100%, upper limits in the range 3.2%–4.4% can be placed on the branching fraction B (t → bH+) for charged Higgs boson masses mH+ in the range 90–140 GeV. After combination with results from a search for charged Higgs bosons in tt¯ decays using the τhad + jets final state, upper limits on B (t → bH+) can be set in the range 0.8%–3.4%, for mH+ in the range 90-160 GeV. | - |
dc.description.statementofresponsibility | G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni … M.J. White … et al. [The ATLAS Collaboration] | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.rights | Open Access, Copyright CERN, for the benefit of the ATLAS collaboration | - |
dc.source.uri | http://dx.doi.org/10.1007/jhep03(2013)076 | - |
dc.subject | Hadron-hadron scattering | - |
dc.title | Search for charged Higgs bosons through the violation of lepton universality in tt¯ events using pp collision data at √s = 7 TeV with the ATLAS experiment | - |
dc.title.alternative | Search for charged Higgs bosons through the violation of lepton universality in tt -bar events using pp collision data at root s = 7 TeV with the ATLAS experiment | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/JHEP03(2013)076 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 7 Chemistry and Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.