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TitleAngular distributions in tt¯H(H→bb¯) reconstructed events at the LHC
Author(s)Santos, S. P. Amor dos
Araque, Juan Pedro
Cantrill, R.
Castro, Nuno F.
Fiolhais, Miguel C. N.
Frederix, R.
Gonçalo, R.
Martins, R.
Santos, R.
Silva, J.
Onofre, A.
Peixoto, H.
Reigoto, A.
Issue date2015
PublisherAmerican Physical Society
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
CitationAmor Dos Santos, S. P., Araque, J. P., Cantrill, R., Castro, N. F., Fiolhais, M. C. N., Frederix, R., . . . Reigoto, A. (2015). Angular distributions in t t ¯ H (H →b b ¯) reconstructed events at the LHC. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(3). doi: 10.1103/PhysRevD.92.034021
Abstract(s)The associated production of a Higgs boson and a top-quark pair, tt¯H, in proton-proton collisions is addressed in this paper for a center of mass energy of 13TeV at the LHC. Dileptonic final states of tt¯H events with two oppositely charged leptons and four jets from the decays t→bW+→bℓ+νℓ, t¯→b¯W−→b¯ℓ−ν¯ℓ and h→bb¯, are used. Signal events, generated with MadGraph5_aMC@NLO, are fully reconstructed by applying a kinematic fit. New angular distributions of the decay products as well as angular asymmetries are explored in order to improve discrimination of tt¯H signal events over the dominant irreducible background contribution, tt¯bb¯. Even after the full kinematic fit reconstruction of the events, the proposed angular distributions and asymmetries are still quite different in the tt¯H signal and the dominant background (tt¯bb¯).
AccessOpen access
Appears in Collections:LIP - Artigos/papers

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