Probing vector-like quark models with Higgs-boson pair production

Cacciapaglia, Giacomo (Univ Lyon, Université Lyon 1, CNRS/IN2P3, IPNL, F-69622, Villeurbanne, France) ; Cai, Haiying (Univ Lyon, Université Lyon 1, CNRS/IN2P3, IPNL, F-69622, Villeurbanne, France) ; Carvalho, Alexandra (Dipartimento di Fisica e Astronomia and INFN, Sezione di Padova, Via Marzolo 8, I-35131, Padova, Italy) ; Deandrea, Aldo (Univ Lyon, Université Lyon 1, CNRS/IN2P3, IPNL, F-69622, Villeurbanne, France) (Institut Universitaire de France, 103 boulevard Saint-Michel, 75005, Paris, France) ; Flacke, Thomas (Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon, 34051, Korea) ; Fuks, Benjamin (Institut Universitaire de France, 103 boulevard Saint-Michel, 75005, Paris, France) (Sorbonne Universités, UPMC Univ. Paris 06, UMR 7589, LPTHE, F-75005, Paris, France) (CNRS, UMR 7589, LPTHE, F-75005, Paris, France) ; Majumder, Devdatta (Department of Physics and Astronomy, University of Kansas, 1082 Malott, 1251 Wescoe Hall Dr., Lawrence, KS, 66045, U.S.A.) ; Shao, Hua-Sheng (Sorbonne Universités, UPMC Univ. Paris 06, UMR 7589, LPTHE, F-75005, Paris, France) (CNRS, UMR 7589, LPTHE, F-75005, Paris, France)

04 July 2017

Abstract: We investigate Higgs-boson pair production at the LHC when the final state system arises from decays of vector-like quarks coupling to the Higgs boson and the Standard Model quarks. Our phenomenological study includes next-to-leading-order QCD corrections, which are important to guarantee accurate predictions, and focuses on a detailed analysis of a di-Higgs signal in the four b -jet channel. Whereas existing Run II CMS and ATLAS analyses are not specifically designed for probing non-resonant, vector-like-quark induced, di-Higgs production, we show that they nevertheless offer some potential for these modes. We then investigate the possibility of distinguishing between the various di-Higgs production mechanisms by exploiting the kinematic properties of the signal.


Published in: JHEP 1707 (2017) 005
Published by: Springer/SISSA
DOI: 10.1007/JHEP07(2017)005
arXiv: 1703.10614
License: CC-BY-4.0



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