Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H→γγ decay channel at √s =8TeV with the ATLAS detector

0470556 - FZÚ 2017 RIV NL eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2865 autorů
Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H→γγ decay channel at √s =8TeV with the ATLAS detector.
Physics Letters. B. Roč. 753, Feb (2016), s. 69-85. ISSN 0370-2693. E-ISSN 1873-2445
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * kinematics * mass spectrum: two-photon * structure
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.807, rok: 2016

The strength and tensor structure of the Higgs boson's interactions are investigated using an effective Lagrangian, which introduces additional CP-even and CP-odd interactions that lead to changes in the kinematic properties of the Higgs boson and associated jet spectra with respect to the Standard Model. The parameters of the effective Lagrangian are probed using a fit to five differential cross sections previously measured by the ATLAS experiment in the H→γγ decay channel with an integrated luminosity of 20.3 fb −1 at s=8 TeV . In order to perform a simultaneous fit to the five distributions, the statistical correlations between them are determined by re-analysing the H→γγ candidate events in the proton–proton collision data. No significant deviations from the Standard Model predictions are observed and limits on the effective Lagrangian parameters are derived. The statistical correlations are made publicly available to allow for future analysis of theories with non-Standard Model interactions.


Trvalý link: http://hdl.handle.net/11104/0268159