Search for Vector-like T Quarks Decaying to Top Quarks and Higgs Bosons in the All-hadronic Channel Using Jet Substructure

Search for Vector-like T Quarks Decaying to Top Quarks and Higgs Bosons in the All-hadronic Channel Using Jet Substructure
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Total Pages : 43
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ISBN-10 : OCLC:925454657
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Book Synopsis Search for Vector-like T Quarks Decaying to Top Quarks and Higgs Bosons in the All-hadronic Channel Using Jet Substructure by :

Download or read book Search for Vector-like T Quarks Decaying to Top Quarks and Higgs Bosons in the All-hadronic Channel Using Jet Substructure written by and published by . This book was released on 2015 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: We performed a search 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-1collected with the CMS detector in proton-proton collisions at √s=8 TeV. 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. We also derived upper limits on the production cross section of a T quark with mass between 500 and 1000 GeV/c 2. 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.


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