Study of (W/Z)H production and Higgs boson couplings using H→WW* decays with the ATLAS detector

doi:10.1007/JHEP08(2015)137

Эндаумент фонд ТГУ!
Впиши своё имя в историю университета
- Сделать пожертвование -

Add to Quick Collection

Description	Size	Format
Study of (W/Z)H production and Higgs boson couplings using H→WW* decays with the ATLAS detector	1 MB	Adobe Acrobat PDF	View Details	Download
DOI Доступ к ресурсу на сайте издателя				10.1007/JHEP08(2015)137

Title: Study of (W/Z)H production and Higgs boson couplings using H→WW* decays with the ATLAS detector
Creator: Aad, G.
Creator: Abdallah, J.
Creator: Chelkov, G. A.
Creator: Vaniachine, A.
Creator: Abbott, B.
Subject: ATLAS, детектор
Большой адронный коллайдер
протон-протонные столкновения
Хиггса бозон
Date: 2015
DOI: 10.1007/JHEP08(2015)137
Description: A search for Higgs boson production in association with a W or Z boson, in the H→ W W ∗ decay channel, is performed with a data sample collected with the ATLAS detector at the LHC in proton-proton collisions at centre-of-mass energies s√=7 TeV and 8 TeV, corresponding to integrated luminosities of 4.5 fb−1 and 20.3 fb−1, respectively. The WH production mode is studied in two-lepton and three-lepton final states, while two- lepton and four-lepton final states are used to search for the ZH production mode. The observed significance, for the combined W H and ZH production, is 2.5 standard deviations while a significance of 0.9 standard deviations is expected in the Standard Model Higgs boson hypothesis. The ratio of the combined W H and ZH signal yield to the Standard Model expectation, μ V H , is found to be μ V H = 3.0 − 1.1 + 1.3 (stat.) − 0.7 + 1.0 (sys.) for the Higgs boson mass of 125.36 GeV. The W H and ZH production modes are also combined with the gluon fusion and vector boson fusion production modes studied in the H → W W ∗ → ℓνℓν decay channel, resulting in an overall observed significance of 6.5 standard deviations and μ ggF + VBF + VH = 1. 16 − 0.15 + 0.16 (stat.) − 0.15 + 0.18 (sys.). The results are interpreted in terms of scaling factors of the Higgs boson couplings to vector bosons (κ V ) and fermions (κ F ); the combined results are: |κ V | = 1.06 − 0.10 + 0.10 , |κ F | = 0. 85 − 0.20 + 0.26 .

Relationships: Show Relationship Browser for this Object
collection(s): Радиофизический факультет
Научное управление
Identifier: vtls:000625561
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000625561
Type: статьи в журналах
Source: Journal of high energy physics. 2015. № 8. P. 137 (1-64)
Language: eng

1489 Visitors

1304 Hits

205 Downloads

Preview

Радиофизический факультет

Научное управление Study of (W/Z)H production and Higgs boson couplings using H→WW* decays with the ATLAS detector