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Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV

A search is performed for Higgs-boson-mediated flavor-changing neutral currents in the decays of top quarks. The search is based on proton-proton collision data corresponding to an integrated luminosity of 19.7 fb−1 at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC. Ev...

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主要な著者: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
フォーマット: 論文
言語:English
English
出版事項: Springer Verlag 2017
主題:
Q Science (General)
QC Physics
オンライン･アクセス:http://irep.iium.edu.my/63127/1/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_article.pdf
http://irep.iium.edu.my/63127/2/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_scopus.pdf
http://irep.iium.edu.my/63127/
https://link.springer.com/content/pdf/10.1007%2FJHEP07%282017%29121.pdf
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spelling my.iium.irep.631272019-08-30T07:40:41Z http://irep.iium.edu.my/63127/ Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is performed for Higgs-boson-mediated flavor-changing neutral currents in the decays of top quarks. The search is based on proton-proton collision data corresponding to an integrated luminosity of 19.7 fb−1 at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC. Events in which a top quark pair is produced with one top quark decaying into a charm or up quark and a Higgs boson (H), and the other top quark decaying into a bottom quark and a W boson are selected. The Higgs boson in these events is assumed to subsequently decay into either dibosons or difermions. No significant excess is observed above the expected standard model background, and an upper limit at the 95% confidence level is set on the branching fraction B (t → Hc) of 0.40% and B (t → Hu) of 0.55%, where the expected upper limits are 0.43% and 0.40%, respectively. These results correspond to upper limits on the square of the flavor-changing Higgs boson Yukawa couplings |λ H tc| 2 < 6.9 × 10−3 and |λ H tu| 2 < 9.8 × 10−3 Springer Verlag 2017-07-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63127/1/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_article.pdf application/pdf en http://irep.iium.edu.my/63127/2/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV. Journal of High Energy Physics, 2017 (7). pp. 1-34. https://link.springer.com/content/pdf/10.1007%2FJHEP07%282017%29121.pdf 10.1007/JHEP07(2017)121
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
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 top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
description A search is performed for Higgs-boson-mediated flavor-changing neutral currents in the decays of top quarks. The search is based on proton-proton collision data corresponding to an integrated luminosity of 19.7 fb−1 at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC. Events in which a top quark pair is produced with one top quark decaying into a charm or up quark and a Higgs boson (H), and the other top quark decaying into a bottom quark and a W boson are selected. The Higgs boson in these events is assumed to subsequently decay into either dibosons or difermions. No significant excess is observed above the expected standard model background, and an upper limit at the 95% confidence level is set on the branching fraction B (t → Hc) of 0.40% and B (t → Hu) of 0.55%, where the expected upper limits are 0.43% and 0.40%, respectively. These results correspond to upper limits on the square of the flavor-changing Higgs boson Yukawa couplings |λ H tc| 2 < 6.9 × 10−3 and |λ H tu| 2 < 9.8 × 10−3
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 top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
title_short Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
title_full Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
title_fullStr Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
title_full_unstemmed Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 TeV
title_sort search for top quark decays via higgs-boson-mediated flavor-changing neutral currents in pp collisions at √s=8 tev
publisher Springer Verlag
publishDate 2017
url http://irep.iium.edu.my/63127/1/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_article.pdf
http://irep.iium.edu.my/63127/2/63127_Search%20for%20top%20quark%20decays%20via%20Higgs-boson_scopus.pdf
http://irep.iium.edu.my/63127/
https://link.springer.com/content/pdf/10.1007%2FJHEP07%282017%29121.pdf
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score 13.250246

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