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|Title:||Angular distributions in tt¯H(H→bb¯) reconstructed events at the LHC|
|Author(s):||Santos, S. P. Amor dos|
Araque, Juan Pedro
Castro, Nuno F.
Fiolhais, Miguel C. N.
|Publisher:||American Physical Society|
|Journal:||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Citation:||Amor 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¯).|
|Appears in Collections:||LIP - Artigos/papers|