Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/11168
 Title: Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure Authors: The, CMSCKhachatryan, VSirunyan, AMTumasyan, AAdam, WBergauer, TDragicevic, MErö, JFriedl, MFrühwirth, RGhete, VMHartl, CHörmann, NHrubec, JJeitler, MKiesenhofer, WKnünz, VKrammer, MKrätschmer, ILiko, DMikulec, IRabady, DRahbaran, BRohringer, HSchöfbeck, RStrauss, JWaltenberger, WWulz, CEMossolov, VShumeiko, NSuarez Gonzalez, JAlderweireldt, SHobson, PRCole, JEKhan, AKyberd, PLeslie, DReid, IDTeodorescu, L Keywords: Hadron-Hadron Scattering;Beyond Standard Model;Top physics Issue Date: 2015 Publisher: Springer Berlin Heidelberg Citation: Journal of High Energy Physics, 2015: 80, (June 2015) Abstract: Abstract: 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 s=8$$\sqrt{s}=8$$ 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. Upper limits on the production cross section of a T quark with mass between 500 and 1000 GeV/c2 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/c2 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.[Figure not available: see fulltext.] URI: http://link.springer.com/article/10.1007%2FJHEP06%282015%29080http://bura.brunel.ac.uk/handle/2438/11168 DOI: http://dx.doi.org/10.1007/JHEP06(2015)080 ISSN: 1126-67081029-8479 Appears in Collections: Dept of Electronic and Computer Engineering Research Papers

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