Boosted event topologies from TeV scale light quark composite partners

Backović, Mihailo (0000 0004 0604 7563, Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, 76100, Israel) ; Flacke, Thomas (0000 0001 2292 0500, Department of Physics, Korea Advanced Institute of Science and Technology, 335 Gwahak-ro, Yuseong-gu, Daejeon, 305-701, South Korea) ; Kim, Jeong (0000 0001 2292 0500, Department of Physics, Korea Advanced Institute of Science and Technology, 335 Gwahak-ro, Yuseong-gu, Daejeon, 305-701, South Korea) (0000 0004 1784 4496, Center for Theoretical Physics of the Universe, IBS, Daejeon, South Korea) ; Lee, Seung (0000 0001 2292 0500, Department of Physics, Korea Advanced Institute of Science and Technology, 335 Gwahak-ro, Yuseong-gu, Daejeon, 305-701, South Korea) (0000 0004 0610 5612, School of Physics, Korea Institute for Advanced Study, Seoul, 130-722, South Korea)

25 April 2015

Abstract: We propose a new search strategy for quark partners which decay into a boosted Higgs and a light quark. As an example, we consider phenomenologically viable right handed up-type quark partners of mass ∼ 1 TeV in composite pseudo-Nambu-Goldstone-boson Higgs models within the context of flavorful naturalness. Our results show that S/B > 1 and signal significance of ∼ 7σ is achievable at s = 14 $$ \sqrt{s}=14 $$ TeV LHC with 35 fb −1 of integrated luminosity, sufficient to claim discovery of a new particle. A combination of a multi-dimensional boosted Higgs tagging technique, kinematics of pair produced heavy objects and b -tagging serves to efficiently diminish the large QCD backgrounds while maintaining adequate levels of signal efficiency. We present the analysis in the context of effective field theory, such that our results can be applied to any future search for pair produced vector-like quarks with decay modes to Higgs and a light jet.


Published in: JHEP 1504 (2015) 082
Published by: Springer/SISSA
DOI: 10.1007/JHEP04(2015)082
arXiv: 1410.8131
License: CC-BY-4.0



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