Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at sv = 7 and 8 TeV with the ATLAS and CMS experiments

Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at sv = 7 and 8 TeV with the ATLAS and CMS experiments

Dades bibliogràfiques
Parent link:Journal of High Energy Physics
Vol. 2019, iss. 5.— 2019.— [88, 80 p.]
Autor corporatiu: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Научно-производственная лаборатория "Импульсно-пучковых, электроразрядных и плазменных технологий"
Altres autors: Aaboud M., Aad G. Georges, Abbott B. K. Brad, Abbott D. C., Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Sumari:Title screen
A search is presented for a Higgs boson that is produced in association with a Z boson and that decays to an undetected particle together with an isolated photon. The search is performed by the CMS Collaboration at the Large Hadron Collider using a data set corresponding to an integrated luminosity of 137 fb?1 recorded at a center-of-mass energy of 13 TeV. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for associated Higgs and Z boson production and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a mass of 125 GeV, assuming the standard model production cross section, this corresponds to an observed (expected) upper limit on this branching fraction of 4.6 (3.6)% at 95% confidence level. These are the first limits on Higgs boson decays to final states that include an undetected massless dark photon.
Режим доступа: по договору с организацией-держателем ресурса
Publicat: 2019
Matèries:
электронный ресурс
труды учёных ТПУ
Hadron-Hadron scattering (experiments)
адрон-адронное рассеяние
Accés en línia:https://doi.org/10.1007/JHEP05(2019)088
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662492

Ítems similars

Ítems similars