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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my.iium.irep.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 |
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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/63061/1/63061_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 http://irep.iium.edu.my/63061/ https://link.springer.com/content/pdf/10.1007%2FJHEP10%282017%29180.pdf |
_version_ |
1643617827712663552 |
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13.18916 |