Search for the standard model Higgs boson produced in association with atop quark pair in pp collisions at the LHC
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics (Q4)
Dergi ISSN 1126-6708
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 05-2013
Kabul Tarihi 07-05-2013 Yayınlanma Tarihi 01-05-2013
Cilt / Sayı / Sayfa 2013 / 5 / – DOI 10.1007/JHEP05(2013)145
Makale Linki https://link.springer.com/content/pdf/10.1007/JHEP05(2013)145.pdf
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
A search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb− 1 (5.1 fb− 1) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+ jets (tt−→ ℓνqq−′ bb−) or dileptons (tt−→ ℓ+ νℓ− ν− bb−), ℓ being an electron or a muon. The search is optimized for the decay mode H→ bb−. The largest background to the tt− H signal is top-quark pair production with additional jets. Artificial neural networks are used to discriminate between signal and background events. Combining the results from the 7 TeV and 8 TeV samples, the observed (expected) limit on the cross section for Higgs boson production in association with top-quark pairs for a Higgs boson mass of 125 GeV is 5.8 (5.2) times the standard model expectation.
Anahtar Kelimeler
Hadron-Hadron Scattering | Higgs physics