2018/04/02 by Chuan Ren Chen, Chen, Chuan-Ren, Yu Xiang Lin +5
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.1804.00405
openalex publication_date 2018/04/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Non-resonant production of Higgs-pair via heavy intermediate states may be a distinctive signature for extended discrete symmetries when accompaied by large missing transvers energy. We discuss T-parity as an example of such symmetry within the Littlest Higgs Model, where a new heavy gauge boson Z', the T-odd partner of SM Z-boson, predominately decays into to a Higgs boson and a dark matter candidate χ. In essence, T-parity stablises simultaneously both the Higgs mass and the dark matter. Production via pp→ Z' Z'→ 2h 2χ may therefore yield important clues about symmetries connecting the Higgs and dark sectors. This paper makes a case for the search for this channel at the LHC by studying its discovery potential. It is demonstrated that in situations where a large Z'-χ mass gap results in a boosted topology, the jet-substructure technique can be leveraged to reach the required significance for discovery in the 2h→ 2γ2b decay mode.