Tony Gherghetta

Axiogenesis with a heavy QCD axion

RT Co, T Gherghetta, K Harigaya

Journal article  |  2022  |  Journal of High Energy Physics

We demonstrate that the observed cosmological excess of matter over anti-matter may originate from a heavy QCD axion that solves t..

REVIEW OF PARTICLE PHYSICS

RL Workman, VD Burkert, V Crede, E Klempt, U Thoma, L Tiator, K Agashe, G Aielli, BC Allanach, C Amsler, M Antonelli, EC Aschenauer, DM Asner, H Baer, Sw Banerjee, RM Barnett, L Baudis, CW Bauer, JJ Beatty, V Belousov, et al.

Journal article  |  2022  |  PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS

Abstract The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,14..

Enhanced EDMs from small instantons

RS Bedi, T Gherghetta, M Pospelov

Journal article  |  2022  |  Physical Review D

We show that models in which the strong CP problem is solved by introducing an axion field with a mass enhanced by non-QCD UV dyna..

Light sterile neutrinos and a high-quality axion from a holographic Peccei-Quinn mechanism

Peter Cox, Tony Gherghetta, Minh D Nguyen

Journal article  |  2022  |  PHYSICAL REVIEW D

We present a five-dimensional (5D) axion-neutrino model that explains the Standard Model fermion mass hierarchy and flavor structu..

Small instantons in weakly-gauged holographic models

Tony Gherghetta, Alex Pomarol

Journal article  |  2021  |  JOURNAL OF HIGH ENERGY PHYSICS

Small instantons can play an important role in Yang-Mills theories whose gauge couplings are sizeable at small distances. An inter..

Flavoured warped axion

Q Bonnefoy, P Cox, E Dudas, T Gherghetta, MD Nguyen

Journal article  |  2021  |  The Journal of High Energy Physics

We consider a 5D extension of the DFSZ axion model that addresses both the axion quality and fermion mass hierarchy problems, and ..

A composite Higgs with a heavy composite axion

Tony Gherghetta, Minh D Nguyen

Journal article  |  2020  |  JOURNAL OF HIGH ENERGY PHYSICS

We consider the strong dynamics associated with a composite Higgs model that simultaneously produces dynamical axions and solves t..

REVIEW OF PARTICLE PHYSICS

PA Zyla, RM Barnett, J Beringer, O Dahl, DA Dwyer, DE Groom, C-J Lin, KS Lugovsky, E Pianori, DJ Robinson, CG Wohl, W-M Yao, K Agashe, G Aielli, BC Allanach, C Amsler, M Antonelli, EC Aschenauer, DM Asner, H Baer, et al.

Journal article  |  2020  |  PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements from ..

Partially composite Dynamical Dark Matter

Yusuf Buyukdag, Keith R Dienes, Tony Gherghetta, Brooks Thomas

Journal article  |  2020  |  PHYSICAL REVIEW D

The axion mass from 5D small instantons

Tony Gherghetta, Valentin V Khoze, Alex Pomarol, Yuri Shirman

Journal article  |  2020  |  JOURNAL OF HIGH ENERGY PHYSICS

We calculate a new contribution to the axion mass that arises from gluons propagating in a 5th dimension at high energies. By upli..