Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure
[ X ]
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A search is performed for a vector-like heavy T quark that is produced in pairs and that decays to a top quark and a Higgs boson. The data analysed correspond to an integrated luminosity of 19.7 fb(-1) collected with the CMS detector in proton-proton collisions at root s = 8TeV. For T quarks with large mass values the top quarks and Higgs bosons can have significant Lorentz boosts, so that their individual decay products often overlap and merge. Methods are applied to resolve the substructure of such merged jets. Upper limits on the production cross section of a T quark with mass between 500 and 1000 GeV/c(2) are derived. If the T quark decays exclusively to tH, the observed (expected) lower limit on the mass of the T quark is 745 (773) GeV/c(2) at 95% confidence level. For the first time an algorithm is used for tagging boosted Higgs bosons that is based on a combination of jet substructure information and b tagging.
Açıklama
Anahtar Kelimeler
Hadron-Hadron Scattering, Beyond Standard Model, Top physics
Kaynak
Journal of High Energy Physics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
6
