10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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408 papers · 1 filter
Probing Planck-Scale Physics with High-Frequency Gravitational Waves
Stefano Profumo
We develop a framework for testing quantum gravity through the stochastic gravitational-wave background produced by evaporating near-Planck-mass primordial black holes. Because gra…
Non-Thermal Production of Sexaquark Dark Matter
Marianne Moore, Stefano Profumo
Standard thermal freeze-out scenarios with QCD-scale interaction rates predict a sexaquark relic abundance many orders of magnitude below the observed dark matter density,…
Structure Formation with Dark Magnetohydrodynamics
Pierce Giffin, Andrew Liu, Jeremias Boucsein +4
Long-range interactions in the dark sector can give rise to collective plasma phenomena that are capable of modifying the evolution of dark matter halos. We present the first study…
Lepton Flavor Violation: From Muon Decays to Muon Colliders
Pouya Asadi, Hengameh Bagherian, Katherine Fraser +2
We investigate the unique potential of a high-energy muon collider to probe lepton-flavor-violating signals arising from physics beyond the Standard Model (SM). Low-energy, precisi…
Sweeping the pion chimney for axion-like particles with KOTO
Reuven Balkin, Stefania Gori, Dean J. Robinson +1
We demonstrate that novel limits on prompt axion-like particles (ALPs) in the hard-to-probe mass range near the neutral pion - the so-called pion chimney - may be obtained from rec…
Updated Constraints from Electric Dipole Moments in the MSSM with R-Parity Violation
Wolfgang Altmannshofer, P. S. Bhupal Dev, Amarjit Soni +1
We revisit the electric dipole moments (EDMs) of quarks and leptons in the Minimal Supersymmetric Standard Model (MSSM) with trilinear -parity violation (RPV). In this framework…
The Cosmic Horizon of Neutrinos
James Fardeen, Stefano Profumo, M. Grant Roberts
The persistent discrepancy between the experimental measurement and the Standard Model (SM) prediction of the muon's anomalous magnetic moment remains one of the most int…
Super-exponential Primordial Black Hole Production via Delayed Vacuum Decay
Yanda Wu, Stefano Profumo
If a cosmological first-order phase transition occurs sufficiently slowly, delayed vacuum decay may lead to the formation of primordial black holes. Here we consider a simple model…
Recent Progress in Flavor Model Building
Wolfgang Altmannshofer, Admir Greljo
The flavor puzzles remain among the most compelling open questions in particle physics. The striking hierarchies observed in the masses and mixing of charged fermions define the St…
Dark plasmas in the nonlinear regime: constraints from particle-in-cell simulations
William DeRocco, Pierce Giffin
If the dark sector possesses long-range self-interactions, these interactions can source dramatic collective instabilities even in astrophysical settings where the collisional mean…
Electron EDM and in the 2HDM
Wolfgang Altmannshofer, Benoît Assi, Joachim Brod +4
We present the first complete two-loop calculation of the electric dipole moment of the electron, as well as the rates of the lepton-flavor violating decays and $τ\to…
Lepton Flavor Violation at FCC-ee and CEPC
Pankaj Munbodh
Lepton flavor violating processes are highly suppressed in the Standard Model. Therefore, if observed, lepton flavor violation would be a clear indication of new physics beyond the…
Discovering neutrino tridents at the Large Hadron Collider
Wolfgang Altmannshofer, Toni Mäkelä, Subir Sarkar +3
Neutrino trident production of di-lepton pairs is well recognized as a sensitive probe of both electroweak physics and physics beyond the Standard Model. Although a rare process, i…
Nelson-Barr ultralight dark matter
Michael Dine, Gilad Perez, Wolfram Ratzinger +1
We show that, in the Nelson-Barr solution to the strong CP-problem, a naturally light scalar can arise. It gives rise to a completely new phenomenology beyond that of the celebrate…
Astrophysical constraints from synchrotron emission on very massive decaying dark matter
Pankaj Munbodh, Stefano Profumo
If the cosmological dark matter (DM) couples to Standard Model (SM) fields, it can decay promptly to SM states in a highly energetic hard process, which subsequently showers and ha…
The Waning of the WIMP: Endgame?
Giorgio Arcadi, David Cabo-Almeida, Maíra Dutra +7
Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search pro…
Classes of complete dark photon models constrained by Z-Physics
Miguel P. Bento, Howard E. Haber, João P. Silva
Dark Matter models that employ a vector portal to a dark sector are usually treated as an effective theory that incorporates kinetic mixing of the photon with a new U(1) gauge boso…
Kinetic recoupling of dark matter
Benjamin V. Lehmann, Logan Morrison, Stefano Profumo +1
We study the possibility that dark matter re-enters kinetic equilibrium with a radiation bath after kinetic decoupling, a scenario we dub kinetic recoupling. This naturally occurs,…
Tree-level Unitarity in SU(2)U(1)U(1) Models
Miguel P. Bento, Howard E. Haber, João P. Silva
In models with a U(1) gauge extension beyond the Standard Model, one can derive sum rules for the couplings of the theory that are a consequence of tree-level unitarity. In this pa…
Statement from the American Linear Collider Committee to the P5 subpanel
J. A. Bagger, S. Belomestnykh, P. C. Bhat +15
This statement from the American Linear Collider Committee to the P5 subpanel has three purposes. It presents a brief summary of the case for an Higgs factory that has eme…
Updated Constraints on Primordial Black Hole Evaporation
Mrunal Korwar, Stefano Profumo
The Hawking evaporation process, leading to the production of detectable particle species, constrains the abundance of light black holes, presumably of primordial origin. Here, we…
UV physics from IR features: new prospects from top flavor violation
Wolfgang Altmannshofer, Stefania Gori, Benjamin V. Lehmann +1
New physics in the rare top decays is currently very weakly constrained. We show that in a large class of Standard Model extensions, existing experimental co…
MeV Dark Matter with MeV Dark Photons in Abelian Kinetic Mixing Theories
Federico Compagnin, Stefano Profumo, Nicolao Fornengo
We consider the cosmology and phenomenology of a dark photon portal to a simple dark sector consisting of a single, light, fermionic dark matter particle species with mass in the M…
Reduced Axion Abundance from an Extended Symmetry
Itamar J. Allali, Mark P. Hertzberg, Yi Lyu
In recent work we showed that the relic dark matter abundance of QCD axions can be altered when the Peccei-Quinn (PQ) field is coupled to very light scalar/s, rendering the effecti…