Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV

A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detecto...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Nature 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/1/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_article.pdf http://irep.iium.edu.my/63061/2/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_scopus.pdf

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spelling	iium-630612018-11-05T06:40:16Z http://irep.iium.edu.my/63061/ Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1 . Results are interpreted in the context of a Z0 -two-Higgs-doublet model, where the gauge symmetry of the standard model is extended by a U(1)Z0 group, with a new massive Z0 gauge boson, and the Higgs sector is extended with four additional Higgs bosons. In this model, a high-mass resonance Z0 decays into a pseudoscalar boson A and a light SM-like scalar Higgs boson, and the A decays to a pair of dark matter particles. No significant excesses are observed over the background prediction. Combining results from the two decay channels yields exclusion limits in the signal cross section in the mZ0- mA phase space. For example, the observed data exclude the Z0 mass range from 600 to 1860 GeV, for Z0 coupling strength gZ0 = 0.8, the coupling of A with dark matter particles gχ = 1, the ratio of the vacuum expectation values tan β = 1, and mA = 300 GeV. The results of this analysis are valid for any dark matter particle mass below 100 GeV. Springer Nature 2018-10-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/63061/1/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_article.pdf application/pdf en http://irep.iium.edu.my/63061/2/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2018) Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV. Journal of High Energy Physics, 2017 (10). ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP10%282017%29180.pdf 10.1007/JHEP10(2017)180
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	Q Science (General) QC Physics
spellingShingle	Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
description	A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1 . Results are interpreted in the context of a Z0 -two-Higgs-doublet model, where the gauge symmetry of the standard model is extended by a U(1)Z0 group, with a new massive Z0 gauge boson, and the Higgs sector is extended with four additional Higgs bosons. In this model, a high-mass resonance Z0 decays into a pseudoscalar boson A and a light SM-like scalar Higgs boson, and the A decays to a pair of dark matter particles. No significant excesses are observed over the background prediction. Combining results from the two decay channels yields exclusion limits in the signal cross section in the mZ0- mA phase space. For example, the observed data exclude the Z0 mass range from 600 to 1860 GeV, for Z0 coupling strength gZ0 = 0.8, the coupling of A with dark matter particles gχ = 1, the ratio of the vacuum expectation values tan β = 1, and mA = 300 GeV. The results of this analysis are valid for any dark matter particle mass below 100 GeV.
format	Article
author	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli
author_facet	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli
author_sort	Sirunyan, A. M.
title	Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
title_short	Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
title_full	Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
title_fullStr	Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
title_full_unstemmed	Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
title_sort	search for associated production of dark matter with a higgs boson decaying to b b ¯ or γγ at √s=13 tev
publisher	Springer Nature
publishDate	2018
url	http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/ http://irep.iium.edu.my/63061/1/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_article.pdf http://irep.iium.edu.my/63061/2/63061_Search%20for%20associated%20production%20of%20dark%20matter%20_scopus.pdf
first_indexed	2023-09-18T21:29:26Z
last_indexed	2023-09-18T21:29:26Z
_version_	1777412411082407936

Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV

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