Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector

doi:10.1007/JHEP11(2015)206

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

Add to Quick Collection

Description	Size	Format
Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector	1 MB	Adobe Acrobat PDF	View Details	Download
DOI Доступ к ресурсу на сайте издателя				10.1007/JHEP11(2015)206

Title: Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
Creator: Aad, G.
Creator: Abdallah, J.
Creator: Chelkov, G. A.
Creator: Abbott, B.
Contributor: Томский государственный университет Радиофизический факультет Научные подразделения РФФ
Subject: ATLAS, детектор
Большой адронный коллайдер
бозоны
столкновение частиц
суперсимметрия
Date: 2015
DOI: 10.1007/JHEP11(2015)206
Description: The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb−1 of pp collision data at s√=7 TeV and 20.3 fb−1 at s√=8 TeV. In the current study, the measured production and decay rates of the observed Higgs boson in the γγ, ZZ, WW, Zγ, bb, ττ, and μμ decay channels, along with results from the associated production of a Higgs boson with a top-quark pair, are used to probe the scaling of the couplings with mass. Limits are set on parameters in extensions of the Standard Model including a composite Higgs boson, an additional electroweak singlet, and two-Higgs-doublet models. Together with the measured mass of the scalar Higgs boson in the γγ and ZZ decay modes, a lower limit is set on the pseudoscalar Higgs boson mass of mA>370 GeV in the "hMSSM" simplified Minimal Supersymmetric Standard Model. Results from direct searches for heavy Higgs bosons are also interpreted in the hMSSM. Direct searches for invisible Higgs boson decays in the vector-boson fusion and associated production of a Higgs boson with W/Z (Z→ll, W/Z→jj) modes are statistically combined to set an upper limit on the Higgs boson invisible branching ratio of 0.25. The use of the measured visible decay rates in a more general coupling fit improves the upper limit to 0.23, constraining a Higgs portal model of dark matter.

Relationships: Show Relationship Browser for this Object
collection(s): Радиофизический факультет
Identifier: vtls:000534132
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000534132
Type: статьи в журналах
Source: Journal of high energy physics. 2015. № 11. P. 206 (1-51)
Language: eng

3537 Visitors

3445 Hits

129 Downloads

Preview

Радиофизический факультет Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector