uu.seUppsala universitets publikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Search for charged Higgs bosons in the τ+jets final state using 14.7 fb-1 of pp collision data recorded at √s = 13 TeV with the ATLAS experiment
ATLAS Collaboration.
2016 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The experimental observation of charged Higgs bosons, H±, which are predicted by several models with an extended Higgs sector, would indicate physics beyond the Standard Model. This note presents the results of a search for charged Higgs bosons in 14.7 fb−1 of pp collision data at √ s = 13 TeV recorded by the ATLAS detector at the LHC. The search targets the τ+jets channel in top-quark-associated H ± production with a hadronically decaying W boson and τ lepton in the final state. No evidence of a charged Higgs boson is found. For the mass range of mH± = 200 − 2000 GeV, upper limits are set on the production cross section of the charged Higgs boson with the subsequent decay H± → τν in a range of 2.0 − 0.008 pb.

Ort, förlag, år, upplaga, sidor
2016. artikel-id ATLAS-CONF-2016-088
Nyckelord [en]
higgs, charged higgs, atlas, lhc, tau, mssm, 2hdm
Nationell ämneskategori
Subatomär fysik
Forskningsämne
Fysik med inriktning mot elementarpartikelfysik
Identifikatorer
URN: urn:nbn:se:uu:diva-304284OAI: oai:DiVA.org:uu-304284DiVA, id: diva2:1015012
Konferens
38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016
Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2016-10-06
Ingår i avhandling
1. Searches for Higgs bosons with hadronically decaying τ-leptons: Using Grid and Cloud computing techniques
Öppna denna publikation i ny flik eller fönster >>Searches for Higgs bosons with hadronically decaying τ-leptons: Using Grid and Cloud computing techniques
2016 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

This thesis describes a measurement of the Standard Model Higgs boson coupling to fermions in decays to two τ-leptons, a search for charged Higgs bosons in decays to a τ-lepton and a neutrino, as well as the reconstruction, identification and triggering of hadronically decaying τ-leptons. The data considered are collected by the ATLAS experiment at the Large Hadron Collider.

The reconstruction and identification of hadronically decaying τ-leptons in the ATLAS experiment during Run 2 of the Large Hadron Collider are described, and the performance of the τ trigger is measured in events with top–antitop-quark pairs using data from 13 TeV proton–proton collisions, corresponding to an integrated luminosity of 3.2 fb-1, collected in 2015, and 11.5 fb-1, collected in 2016.

Hadronically decaying τ-leptons are of importance to many physical processes involving Higgs bosons. The coupling of the Standard Model Higgs boson to fermions is measured in decays to two τ-leptons using 7 TeV data corresponding to an integrated luminosity of 4.5 fb-1, collected in 2011, and 8 TeV data corresponding to an integrated luminosity of 20.3 fb-1, collected in 2012. The signal strength is measured to be μ = 1.4, corresponding to an excess over the background-only model of 4.5σ.

Charged Higgs bosons are searched for in decays to a τ-lepton and a neutrino, where the τ-lepton decays hadronically. 13 TeV data corresponding to an integrated luminosity of 14.7 fb-1, collected in 2015 and 2016, are used. No excess over the Standard Model background is observed, and the 95 % confidence-level exclusion limits on σ(pp → [b]tH+) × (H+ → τν) are set to 2.0 pb–8 fb in the range 200–2000 GeV.

Ort, förlag, år, upplaga, sidor
Uppsala: Acta Universitatis Upsaliensis, 2016. s. 111
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1434
Nyckelord
LHC, ATLAS, Higgs, Charged Higgs, Tau lepton, 2HDM, MSSM
Nationell ämneskategori
Subatomär fysik
Forskningsämne
Fysik med inriktning mot elementarpartikelfysik
Identifikatorer
urn:nbn:se:uu:diva-304291 (URN)978-91-554-9706-4 (ISBN)
Disputation
2016-11-21, Polhemsalen, 10134, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2016-10-31 Skapad: 2016-10-03 Senast uppdaterad: 2016-11-17

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

https://cds.cern.ch/record/2206282
Subatomär fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 559 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf