High P_T Higgs excess as a signal of non-local QFT at the LHC

Xing-Fu Su^1*, You-Ying Li¹, Rosy Nicolaidou², Min Chen¹, Hsin-Yeh Wu¹, Stathes Paganis¹

¹Physics, National Taiwan University, Taipei, Taiwan
²IRFU,CEA, Universite Paris-Saclay, Gif-sur-Yvette, France

* Presenter:Xing-Fu Su, email:ice_eric_su@hotmail.com

Non-local extensions of the Standard Model with a non-locality scale Λ_NL have the effect of smearing the pointlike vertices of the Standard Model. At energies significantly lower than Λ_NL vertices appear pointlike, while beyond this scale all beta functions vanish and all couplings approach a fixed point leading to scale invariance. Non-local SM extensions are ghost-free, with the non-locality scale serving as an effective cutoff to radiative corrections of the Higgs mass. We argue that the data expected to be collected at the LHC phase 2 will have a sensitivity to non-local effects originating from a non-locality scale of a few TeV. Using an infinite derivative prescription, we study modifications to heavy vector-boson cross-sections that can lead to an enhanced production of boosted Higgs bosons in a region of the kinematic phase space where the SM background is very small.

Keywords: Computational methods and analysis tools, Hadron and lepton collider physics