24 citations · 85 across the 28 of their papers we have counts for
34 papers
Thermal Festina Lente
Fayez Abu-Ajamieh, Nobuchika Okada, Roman Pasechnik +2
According to the Festina Lente bound, particles charged under a gauge field cannot be too light. Otherwise, the largest charged black holes of de Sitter space would discharg…
Boundedness from below in the real Weinberg three-Higgs-doublet model
Fayez Abu-Ajamieh
We study the boundedness-from-below (BFB) conditions of the quartic potential in the real Weinberg three-Higgs-doublet model (3HDM). Unlike an analysis restricted to neutral Higgs…
Noise-Induced Restoration of Entropy Concavity Near Gaussian Equilibrium
Fayez Abu-Ajamieh
We study a quantitative form of noise-induced restoration of entropy concavity for one-dimensional nonequilibrium states relaxing toward a Gaussian thermal equilibrium. A partially…
An exact computer-assisted lower bound for Fisher-information convexity along the two-dimensional heat flow
Fayez Abu-Ajamieh, Xiaoyan Huo
We study the sharp constant in the differential inequality \[ I(t)I''(t)\geq c\,[I'(t)]^2 \] for Fisher information along the probability-normalized heat flow on . The…
Resonantly-Enhanced Baryogenesis through Asymmetric Capture by Primordial Black Holes
Fayez Abu-Ajamieh, Xiaoyan Huo
Primordial black holes (PBHs) can generate the Baryon Asymmetry of the Universe (BAU) through asymmetric capture of baryon-charge-carrying particles, but previous realizations of t…
A Model-Independent Approach to First-Order Phase Transitions, Gravitational Waves, and Primordial Magnetic Fields
Fayez Abu-Ajamieh, Nobuchika Okada
We employ a model-independent Effective Field Theory (EFT) to analyze the possibility of a strong First-Order Phase Transition (FOPT) in extensions Beyond the Standard Model (BSM).…
Detectability of Magnetar-Induced Vacuum Birefringence with IXPE and eXTP
Fayez Abu-Ajamieh
We analyze the prospects of quantitatively detecting vacuum birefringence from magnetars using the IXPE and eXTP experiments. We adopt a realistic spatially-varying magnetic field…
Good flavor search in SU(5): a machine learning approach
Fayez Abu-Ajamieh, Shinsuke Kawai, Nobuchika Okada
We revisit the fermion mass problem of the grand unified theory using machine learning techniques. The original model proposed by Georgi and Glashow is incompatible…
Novel Bounds From The Weak Gravity and Festina Lente Conjectures
Fayez Abu-Ajamieh, Pratik Chattopadhyay, Nobuchika Okada +2
We demonstrate that the Weak Gravity Conjecture (WGC) and the Festina-Lente Conjecture (FLC) yield novel bounds on fifth force searches and milli-Charged Particles (mCPs), as well…
Novel and Updated Bounds on Flavor-Violating Z Interactions in the Quark Sector
Fayez Abu-Ajamieh, Amine Ahriche, Suman Kumbhakar +1
We derive bounds on the flavor-violating (FV) couplings of the boson to quarks and present future sensitivity projections. Our analysis shows that the current bounds on the FV…
Pseudoscalar Higgs Production at Muon Colliders: The Role of One-Loop Effective Vertices
Fayez Abu-Ajamieh, Sagar Modak, Samadrita Mukherjee +1
We investigate the production of the pseudoscalar Higgs boson at muon colliders within the framework of Type-II and Type-X Two-Higgs-Doublet Model (2HDM) at the Next-to-Leading…
Improved Bounds and Global Fit of Flavor-Violating Charged Lepton Yukawa Couplings post LHC
Fayez Abu-Ajamieh, Suman Kumbhakar, Ratan Sarkar +1
Higgs couplings to charged leptons form an important measurement to understand not only the Standard Model (SM), but also physics Beyond Standard Models (BSM). In this work, we upd…
Novel and Updated Bounds on Flavor-violating Z Interactions in the Lepton Sector
Fayez Abu-Ajamieh, Amine Ahriche, Nobuchika Okada
We investigate the experimental bounds on the Flavor-Violating (FV) couplings of the boson to the charged leptons. In addition to the direct LHC searches for FV decays to l…
Aspects of Non-local QED and the Weak Gravity Conjecture
Fayez Abu-Ajamieh, Nobuchika Okada, Sudhir K. Vempati
We use the Weak Gravity Conjecture (WGC) to investigate the impact of charge dequantization arising from non-local QED on the scale of non-locality of neutrinos. We find this scale…
The Generalized Scalar Weak Gravity Conjecture and its Implications
Fayez Abu-Ajamieh, Nobuchika Okada, Sudhir K. Vempati
We propose a generalized formulation of the Scalar Weak Gravity Conjecture (SWGC) based on the analogy with the derivation of the Gauge Weak Gravity Conjecture (GWGC). We discuss s…
Phenomenological Aspects of Lee-Wick QED
Fayez Abu-Ajamieh, Pratik Chattopadhyay, Marco Frasca
We study some phenomenological aspects of Lee-Wick (LW) QED. In particular, we show that LW QED implies charge dequantization and a flavor-dependent LW scale. We study the implicat…
Implications of the Weak Gravity Conjecture on Charge, Kinetic Mixing, the Photon Mass, and More
Fayez Abu-Ajamieh, Nobuchika Okada, Sudhir K Vempati
We investigate several phenomenological implications of the Weak Gravity Conjecture (WGC). We find that the WGC implies that the SM neutrinos must be electrically neutral, that the…
Corrected Calculation for the Non-local Solution to the g-2 Anomaly and Novel Results in Non-local QED
Fayez Abu-Ajamieh, Nobuchika Okada, Sudhir K. Vempati
We provide the corrected calculation of the muon g-2 in non-local QED previously done in the literature. In specific, we show the proper technique for calculating loops in non-loca…
Anomalies in String-inspired Non-local Extensions of QED
Fayez Abu-Ajamieh, Pratik Chattopadhyay, Anish Ghoshal +1
We investigate anomalies in the class of non-local field theories that have been proposed as an ultraviolet completion of 4-D Quantum Field Theory (QFT) with generalizing the kinet…
Flavor Violating Di- Higgs Coupling
Fayez Abu-Ajamieh, Marco Frasca, Sudhir K. Vempati
Di-Higgs couplings to fermions of the form are absent in the Standard Model, however, they are present in several physics Beyond Standard Model (BSM) extension…
A Proposed Renormalization Scheme for Non-local QFTs and Application to the Hierarchy Problem
Fayez Abu-Ajamieh, Sudhir K. Vempati
We propose a renormalization scheme for non-local Quantum Field Theories (QFTs) with infinite derivatives inspired by string theory. Our Non-locality Renormalization Scheme (NRS) i…
Can the Higgs Still Account for the g-2 Anomaly?
Fayez Abu-Ajamieh, Sudhir K. Vempati
We use an Effective Field Theory (EFT) approach to evaluate the viability of the Higgs to account for the anomaly. Although the SM contribution of the Higgs to the muon's mag…
Report of the Topical Group on Higgs Physics for Snowmass 2021: The Case for Precision Higgs Physics
Sally Dawson, Patrick Meade, Isobel Ojalvo +78
A future Higgs Factory will provide improved precision on measurements of Higgs couplings beyond those obtained by the LHC, and will enable a broad range of investigations across t…
Snowmass 2021 White Paper: Higgs Coupling Sensitivities and Model-Independent Bounds on the Scale of New Physics
Fayez Abu-Ajamieh, Spencer Chang, Miranda Chen +2
In this Snowmass white paper, we describe how unitarity bounds can convert sensitivities for Higgs couplings at future colliders into sensitivities to the scale of new physics. Thi…