Speaker
Prof.
Anna Hasenfratz
(University of Colorado)
Description
We construct a prototype BSM model where the Higgs boson is a pseudo
Nambu-Goldstone boson by combining 4 light (massless) flavors and 8
heavy flavors. In the infrared, the SU(4) chiral symmetry is spontaneously broken , while in the ultraviolet it exhibits the properties of the $N_f=12$ conformal fixed point. The running coupling of this system ``walks" and the energy range of walking can be tuned by the mass of the heavy flavors. At the same time, renormalization group considerations predict the spectrum of such a system to show hyperscaling i.e. hadron masses in units of $F_\pi$ are independent of the heavy mass. Hyperscaling is present for bound states made-up of light, heavy, or heavy and light flavors. This observation is supported by numerical observations and makes the model strongly predictive.
Primary author
Prof.
Anna Hasenfratz
(University of Colorado)
Co-authors
Prof.
Claudio Rebbi
(Boston University)
Dr
Oliver Witzel
(University of Edinburgh)
