459 citations · 7.5k across the 153 of their papers we have counts for
143 papers · 1 filter
Signatures of Leptophilic Baryogenesis at Muon Colliders
Hooman Davoudiasl, Ian M. Lewis, Miguel A. Soto Alcaraz
The baryon asymmetry of the Universe may be produced in a model with 3 Higgs fields, a Higgs Troika, without the need for a strong first order electroweak phase transition. The cou…
Novel Signatures of Matter-Induced Dark Matter Decay in Large-Volume Neutrino Telescopes
Hooman Davoudiasl, Dan Hooper, Samyak Jain
Large-volume neutrino telescopes offer a unique opportunity to search for decaying dark matter through events containing a pair of energetic, highly non-collimated muon tracks emer…
Long-Lived Dark Hadrons at the Electron-Ion Collider
Hooman Davoudiasl, Hongkai Liu, Ethan T. Neil
We study a dark non-Abelian gauge sector with GeV-scale confinement. The dark sector is assumed to couple only feebly to the Standard Model, while its low-energy spectrum may conta…
Thermal Emission of Dark Photons from Earth's Core
Hooman Davoudiasl
Dark photons in the sub-eV regime may be produced by the Earth's hot core, representing a much less extreme environment than stellar cores. We consider this possibility and estimat…
Mesogenesis through the Ephemeral Dark Decay of Beauty
Hooman Davoudiasl, Rachel Houtz, Seyda Ipek
Mesogenesis provides a path for generating the baryon asymmetry of the Universe, using only the CP violation furnished by the Standard Model in the decay of mesons. While this…
Weak Charge Form Factor Determination at the Electron-Ion Collider
Hooman Davoudiasl, Hongkai Liu, Sonny Mantry +1
Determining the weak charge form factor, , of nuclei over a continuous range of momentum transfers, GeV, is essential for mapping out the…
Neutron stars can shine a light on elusive lepton-flavor-violating dark matter
Hooman Davoudiasl, Jaime Hoefken Zink, Sebastian Trojanowski
We investigate a scenario in which dark matter (DM) poses a challenge to conventional direct and indirect detection, making it much more elusive than typical candidates. We focus o…
Cosmic Overture Echoed in a Stellar Final Act: Implications of Nanohertz Gravitational Waves for Core Collapse Supernova Neutrinos
Hooman Davoudiasl, Peter B. Denton, Anna M. Suliga
The growing evidence for nanohertz gravitational waves, from NANOGrav and other observations, may be pointing to a cosmological first-order phase transition at temperatures of $\ma…
Astrophysical Consequences of an Electroweak Pseudo-Scalar
Hooman Davoudiasl
Recently, it has been suggested that the spectrum of physical states in the Standard Model may include an ultralight pseudo-scalar, denoted by , in analogy with the …
Electron-Ion Collider as a Discovery Tool for Invisible Dark Bosons
Hooman Davoudiasl, Hongkai Liu
We illustrate how the future Electron-Ion Collider (EIC) can be used to discover dark bosons with masses in the (10~MeV -- 10~GeV) regime, having a wide range of properties.…
New Physics at the Muon (Synchrotron) Ion Collider: MuSIC for several scales
Hooman Davoudiasl, Hongkai Liu, Roman Marcarelli +2
A Muon (Synchrotron) Ion Collider (MuSIC) can be the successor to the Electron-Ion Collider at Brookhaven National Laboratory, as well as the ideal demonstrator facility for a futu…
Higgs Potential from Instantons
Hooman Davoudiasl, Marvin Schnubel
We propose that the Higgs potential, a key element in our understanding of Nature, is partially generated by the instantons of new confining dynamics, perhaps from a hidden sector.…
How fast can protons decay?
Hooman Davoudiasl, Peter B. Denton
Current laboratory bounds imply that protons are extremely long-lived. However, this conclusion may not hold for all time and in all of space. We find that the proton lifetime can…
Gravitationally Misaligned Ultralight Dark Matter and Implications for Neutron Stars
Hooman Davoudiasl
We examine the possibility that dark matter (DM) may be an ultralight scalar that was misaligned via non-minimal coupling to gravity, in the early Universe. For a certain regime of…
Lepton-Flavor-Violating ALP Signals with TeV-Scale Muon Beams
Brian Batell, Hooman Davoudiasl, Roman Marcarelli +2
We explore the feasibility of using TeV-energy muons to probe lepton-flavor-violating (LFV) processes mediated by an axion-like particle (ALP) with mass $\mathcal{O}(10~\textrm…
Bringing Peccei-Quinn Mechanism Down to Earth
Hooman Davoudiasl, Marvin Schnubel
It is conventionally assumed that the physics underlying the Peccei-Quinn (PQ) mechanism for addressing the strong CP problem is at very high energies, orders of magnitude above th…
Destabilizing Matter through a Long-Range Force
Hooman Davoudiasl
We consider a long-range force, mediated by an ultralight scalar, which can give rise to violation of baryon number. This would lead to very different lifetimes for nucleons in dif…
Flavor-Violating ALPs, Electron g-2, and the Electron-Ion Collider
Hooman Davoudiasl, Roman Marcarelli, Ethan T. Neil
We revisit the possibility that light axion-like particles (ALPs) with lepton flavor violating couplings could give significant contributions to the electron's anomalous magnetic m…
Electron Foreshadowing Discoveries at FCC-ee
Hooman Davoudiasl, Pier Paolo Giardino
A future circular collider (FCC-ee) may provide a unique probe of the electron Yukawa coupling through Higgs boson production on resonance. Motivated by this exciting poss…
Searching for new physics effects in future mass and determinations
Hooman Davoudiasl, Kazuki Enomoto, Hye-Sung Lee +2
We investigate the phenomenology of the dark boson, , which is associated with a new Abelian gauge symmetry and couples to the standard model particles via kinetic mixing…
Adagio for Thermal Relics
Hooman Davoudiasl, Matthew Sullivan
A larger Planck scale during an early epoch leads to a smaller Hubble rate, which is the measure for efficiency of primordial processes. The resulting slower cosmic tempo can accom…
Displaced Signals of Hidden Vectors at the Electron-Ion Collider
Hooman Davoudiasl, Roman Marcarelli, Ethan T. Neil
The Electron-Ion Collider (EIC) provides unique opportunities in searching for new physics through its high center of mass energy and coherent interactions of large nuclei. We exam…
Stellar Signals of a Baryon-Number-Violating Long-Range Force
Hooman Davoudiasl
We entertain the novel possibility that long range forces may lead to violations of accidental symmetries, in particular baryon number. Employing an ultralight scalar, with a mass…
Sterile Neutrino Shape-shifting Caused by Dark Matter
Hooman Davoudiasl, Peter B. Denton
Light sterile neutrinos with a mass of eV continue to be interesting due to multiple hints from terrestrial experiments. This simple hypothesis suffers from strong astroph…