Unconstraining the unHiggs model

Englert, C. , Spannowsky, M., Stancato, D. and Terning, J. (2012) Unconstraining the unHiggs model. Physical Review D, 85(9), 095003. (doi: 10.1103/PhysRevD.85.095003)

Abstract

We investigate whether or not perturbative unitarity is preserved in the unHiggs model for the scattering process of heavy quarks and longitudinal gauge bosons q¯q→V+LV−L. With the Yukawa coupling given in the original formulation of the unHiggs model, the model preserves unitarity for unHiggs scaling dimensions d≤1.5. We examine the LHC phenomenology which is implied by the unHiggs model in this parameter range in detail and discuss to what extent the LHC can test d if an excess is measured in the phenomenologically clean ZZ channel in the future or if the LHC measurement remains consistent with the background. We then make use of the AdS/CFT correspondence to derive a new Yukawa coupling which is conformally invariant at high energies and show that with this Yukawa coupling, the theory is unitary for 1≤d<2.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Englert, Professor Christoph
• Authors: Englert, C., Spannowsky, M., Stancato, D., and Terning, J.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review D
• Publisher: American Physical Society
• ISSN: 1550-7998
• ISSN (Online): 1550-2368