Double Higgcision: 125 GeV Higgs boson and a potential diphoton Resonance
Abstract
Searches for diphoton resonance have been shown to be very useful in discovering new heavy spin-0 or spin-2 particles. Supposing that a new heavy particle shows up in the diphoton channel and it points to a spin-0 boson, it can be allowed to have a small mixing with the observed 125 GeV Higgs-like boson. We borrow the example of the 750 GeV particles hinted with 3.2 fb data at the end of 2015 (though it did not appear in the 2016 data) to perform an analysis of "double Higgcision". In this work, we perform a complete Higgs-signal strength analysis in the Higgs-portal type framework, using all the existing 125 GeV Higgs boson data as well as the diphoton signal strength of the 750 GeV scalar boson. The best fit prefers a very tiny mixing between two scalar bosons, which has to be accommodated in models for the 750 GeV scalar boson.
Cite
@article{arxiv.1608.00382,
title = {Double Higgcision: 125 GeV Higgs boson and a potential diphoton Resonance},
author = {Kingman Cheung and P. Ko and Jae Sik Lee and Jubin Park and Po-Yan Tseng},
journal= {arXiv preprint arXiv:1608.00382},
year = {2016}
}
Comments
35 pages, 5 tables, 15 figures