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arXiv · 2108.10524

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

Xing-Fu Su·You-Ying Li·Rosy Nicolaidou·Min Chen·Hsin-Yeh Wu·Stathes Paganis
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Abstract

Non-local extensions of the Standard Model with a non-locality scale $\Lambda_{NL}$ have the effect of smearing the pointlike vertices of the Standard Model. At energies significantly lower than $\Lambda_{NL}$ 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.

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Xing-Fu Su, You-Ying Li, Rosy Nicolaidou, Min Chen, Hsin-Yeh Wu, Stathes Paganis. 2021-08-24. High $P_T$ Higgs excess as a signal of non-local QFT at the LHC. https://doi.org/10.1140/epjc%2Fs10052-021-09577-9

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