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19912026
Showing 2025 · hep-phShow all

11 papers · 2 filters

hep-ph2025★ 2 cited

Neutrino Effects on Atomic Measurements of the Weinberg Angle

Mitrajyoti Ghosh, Yuval Grossman, Chinhsan Sieng +1

We derive a complete expression for the neutrino-mediated quantum force beyond the four-Fermi approximation within the Standard Model. Using this new result, we study the effect of…

hep-ph2025

WIMP Meets ALP: Coherent Freeze-Out of Dark Matter

Steven Ferrante, Maxim Perelstein, Bingrong Yu

We consider the cosmological history of a weakly interacting massive particle (WIMP) coupled to a light axion-like particle (ALP) via a quadratic coupling. Although the coupling is…

hep-ph2025★ 3 cited

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…

hep-ph2025★ 1 cited

Electroweak Precision Constraints on Dark Photon Models with Generalized Mixing

Enrico Bertuzzo, Csaba Csaki, Fernanda Huller

We present a global fit to electroweak precision observables (EWPOs) in dark photon (DP) models containing both kinetic and mass mixing between the DP and the neutral gauge bosons…

hep-ph2025★ 2 cited

Strong CP from a Hidden Chiral Condensate

Csaba Csáki, Samuel Homiller, Taewook Youn

Models which solve the strong CP problem by employing discrete spacetime symmetries generically suffer fine-tuning and quality problems. We demonstrate that these issues are greatl…

hep-ph2025★ 1 cited

CP violation in with and without time dependence through a tagged analysis

Giancarlo D'Ambrosio, Avital Dery, Yuval Grossman +4

We point out that using current knowledge of and , one can extract short-distance information from the combined measurement of th…

hep-ph2025★ 1 cited

Stopping Dark Mesons in Their Tracks with Long-Lived Particle and Resonant Signatures

Pouya Asadi, Austin Batz, Elias Bernreuther +3

Dark sectors with confining gauge interactions can provide both simple dark matter candidates and striking signals at colliders. We recast Large Hadron Collider searches for two di…

hep-ph2025★ 4 cited

Ultralight Dilatonic Dark Matter

Abhishek Banerjee, Csaba Csáki, Michael Geller +2

The dilaton, a pseudo-Nambu-Goldstone boson (pNGB) of broken scale invariance, is an appealing ultralight dark matter (DM) candidate. Its mass is protected by conformal invariance…

hep-ph2025★ 7 cited

Dark Matter Freeze-In and Small-Scale Observables: Novel Mass Bounds and Viable Particle Candidates

Francesco D'Eramo, Alessandro Lenoci, Ariane Dekker

The suppression of cosmological structure at small scales is a key signature of dark matter (DM) produced via freeze-in in the low-mass regime. We present a comprehensive analysis…

hep-ph2025★ 7 cited

Detecting Ultralight Dark Matter with Matter Effect

Xucheng Gan, Da Liu, Di Liu +2

Ultralight particles, with a mass below the electronvolt scale, exhibit wave-like behavior and have arisen as a compelling dark matter candidate. A particularly intriguing subclass…

hep-ph2025

Probing New Forces with Nuclear Clocks

Cédric Delaunay, Seung J. Lee, Roee Ozeri +3

Clocks based on nuclear isomer transitions promise exceptional stability and precision. The low transition energy of the thorium-229 isomer makes it an ideal candidate, as it has b…