Spectroscopy study of SU(4)/Sp(4) composite Higgs model

Ho Hsiao^1*, Ed Bennett², Jack Holligan³, Deog Ki Hong⁵, Jong-Wan Lee^5,6, C.-J. David Lin¹, Biagio Lucini⁴, Michele Mesiti², Maurizio Piai³, Davide Vadacchino⁷

¹Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
²Swansea Academy of Advanced Computing, Swansea Universit, Wales, UK
³Department of Physics, Swansea University, Wales, UK
⁴Department of Mathematics, Swansea University, Wales, UK
⁵Extreme Physics Institute, Pusan National University, Busan, Korea
⁶Department of Physics, Pusan National University, Busan, Korea
⁷School of Mathematics and Hamilton Mathematics Institute, Trinity College, Dublin, Ireland

* Presenter:Ho Hsiao, email:thepaulxiao@gmail.com

The LHC discovery of Higgs boson at 125 GeV open a new area of high energy physics. Several models were proposed and being tested to solve the naturalness and triviality problems. We focus on SU(4)/Sp(4) composite Higgs model. Combining lattice formulation and Hybrid Monte Carlo method, one can obtain correlators, then further, use them to analyse the spectrum and mass eigenstates. We employ the Wuppertal and APE smearing to improve the quality of data for investigating the spectrum of low-lying hadronic states. In addition, we are able to extract the first excited state of rho meson with variational method. The masses of mesons and chimera baryons with partially quenched fermions will be presented as our preliminary results. In the long run, such lattice studies can shed light on the interpretation of experimental results from the LHC.

Keywords: BSM, composite Higgs model, lattice field theory, Monte Carlo simulation