| |  Online-Ressource |
|---|
| Verfasst von: | Aad, Georges [VerfasserIn]  |
|---|
| | Anders, Christoph [VerfasserIn] |
|---|
| | Andrei, George Victor [VerfasserIn] |
|---|
| | Baas, Alessandra Edda [VerfasserIn] |
|---|
| | Brandt, Oleg [VerfasserIn] |
|---|
| | Djuvsland, Julia Isabell [VerfasserIn] |
|---|
| | Dunford, Monica [VerfasserIn] |
|---|
| | Geisler, Manuel Patrice [VerfasserIn] |
|---|
| | Hanke, Paul [VerfasserIn] |
|---|
| | Jongmanns, Jan [VerfasserIn] |
|---|
| | Kluge, Eike-Erik [VerfasserIn] |
|---|
| | Kugel, Andreas [VerfasserIn] |
|---|
| | Lang, Valerie [VerfasserIn] |
|---|
| | Meier, Karlheinz [VerfasserIn] |
|---|
| | Schätzel, Sebastian [VerfasserIn] |
|---|
| | Scharf, Veit [VerfasserIn] |
|---|
| | Schmitt, Sebastian [VerfasserIn] |
|---|
| | Schöning, André [VerfasserIn] |
|---|
| | Schultz-Coulon, Hans-Christian [VerfasserIn] |
|---|
| | Sosa Corral, David E. [VerfasserIn] |
|---|
| | Stamen, Rainer [VerfasserIn] |
|---|
| | Wessels, Martin [VerfasserIn] |
|---|
| Titel: | Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector |
|---|
| Körperschaft: | ATLAS Collaboration [VerfasserIn] |
|---|
| Verf.angabe: | ATLAS Collaboration* |
|---|
| E-Jahr: | 2015 |
|---|
| Jahr: | 17 July 2015 |
|---|
| Umfang: | 34 S. |
|---|
| Teil: | volume:75 |
|---|
| | year:2015 |
|---|
| | number:7 |
|---|
| | elocationid:335 |
|---|
| | pages:1-34 |
|---|
| | extent:34 |
|---|
| Fussnoten: | *ATLAS Collaboration: G. Aad, C.F. Anders, V. Andrei, A. Baas, O. Brandt, J.I. Djuvsland, M. Dunford, M. Geisler, P. Hanke, J. Jongmanns, E.-E. Kluge, A. Kugel, V. Lang, K. Meier, S. Schaetzel, V. Scharf, S. Schmitt, A. Schoening, H.-C. Schultz-Coulon, D. Sosa, R. Stamen, M. Wessels [und 2801 weitere Personen] ; Gesehen am 08.07.2021 |
|---|
| Titel Quelle: | Enthalten in: The European physical journal / C |
|---|
| Ort Quelle: | Berlin : Springer, 1998 |
|---|
| Jahr Quelle: | 2015 |
|---|
| Band/Heft Quelle: | 75(2015), 7, Artikel-ID 335, Seite 1-34 |
|---|
| ISSN Quelle: | 1434-6052 |
|---|
| Abstract: | Measurements of the ZZ and WW final states in the mass range above the 2mZ and 2mW thresholds provide a unique opportunity to measure the off-shell coupling strength of the Higgs boson. This paper presents constraints on the off-shell Higgs boson event yields normalised to the Standard Model prediction (signal strength) in the ZZ→4ℓ, ZZ→2ℓ2ν and WW→eνμν final states. The result is based on pp collision data collected by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 20.3 fb−1 at a collision energy of s√=8 TeV. Using the CLs method, the observed 95 % confidence level (CL) upper limit on the off-shell signal strength is in the range 5.1–8.6, with an expected range of 6.7–11.0. In each case the range is determined by varying the unknown gg→ZZ and gg→WW background K-factor from higher-order quantum chromodynamics corrections between half and twice the value of the known signal K-factor. Assuming the relevant Higgs boson couplings are independent of the energy scale of the Higgs boson production, a combination with the on-shell measurements yields an observed (expected) 95 % CL upper limit on ΓH/ΓSMH in the range 4.5–7.5 (6.5–11.2) using the same variations of the background K-factor. Assuming that the unknown gg→VV background K-factor is equal to the signal K-factor, this translates into an observed (expected) 95 % CL upper limit on the Higgs boson total width of 22.7 (33.0) MeV. |
|---|
| DOI: | doi:10.1140/epjc/s10052-015-3542-2 |
|---|
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1140/epjc/s10052-015-3542-2 |
|---|
| | DOI: https://doi.org/10.1140/epjc/s10052-015-3542-2 |
|---|
| Datenträger: | Online-Ressource |
|---|
| Sprache: | eng |
|---|
| K10plus-PPN: | 1762479869 |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
Constraints on the off-shell Higgs boson signal strength in the high-mass ZZ and WW final states with the ATLAS detector / Aad, Georges [VerfasserIn]; 17 July 2015 (Online-Ressource)
