Search for Higgs boson pair production in the γγbb[bar] final state using pp collision data at √s = 8 TeV from the ATLAS detector
Searches are performed for resonant and nonresonant Higgs boson pair production in the γγb¯b final state using 20 fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
26 February 2015
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| In: |
Physical review letters
Year: 2015, Jahrgang: 114, Heft: 8, Pages: 1-19 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.114.081802 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.114.081802 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.114.081802 |
| Verfasserangaben: | G. Aad et al.* (ATLAS Collaboration) |
| Zusammenfassung: | Searches are performed for resonant and nonresonant Higgs boson pair production in the γγb¯b final state using 20 fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X→hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass. |
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| Beschreibung: | Im Titel steht der zweite Buchstabe b mit einem Oberstrich Im Titel steht der Buchstabe s unter dem Wurzelsymbol *ATLAS Collaboration: G. Aad, C.F. Anders, V. Andrei, A. Baas, O. Brandt, M. Dunford, 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, R. Stamen, M. Wessels [und 2863 weitere Personen] Gesehen am 12.07.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.114.081802 |