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20242026
most citedALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals

5 citations · 11 across the 10 of their papers we have counts for

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hep-ph2026

ALP-Mediated Dark Matter at Low Reheating Temperature and the Belle II Excess

Joel Jones-Pérez, Luca Merlo, Javier Silva-Malpartida

Belle II has reported a excess in over its Standard Model prediction, recently interpreted as arising from an axion-like particle mediating a thermal dark…

hep-ph2026

Mass Generation for Axion Like Particles

Luca Merlo

The most widely accepted solution to the Strong CP problem is the QCD axion, whose traditional parameter space is relatively constrained. However, recent studies on exotic axion mo…

hep-ph2026

How to Identify a Majoron: Effective Field Theories of Spontaneous Lepton Number Breaking

Carla Biggio, Marta Fuentes Zamoro, Xu Li +2

We revisit the traditional type~I, II, and III seesaw mechanisms in the presence of a complex scalar field charged under a global symmetry that can be identified with lepton…

hep-ph2026

Crossing into the Region for Leptophilic ALPs

Marta F. Zamoro, Álvaro Lozano-Onrubia, Luca Merlo +1

Axion-like particles (ALPs) are typically identified as pseudoscalars whose couplings are shift-symmetry invariant with the exception of their couplings to gauge bosons and their m…

hep-ph2026

WISPedia -- the WISPs Encyclopedia

Conrado Albertus, Francesca Chadha-Day, Arturo de Giorgi +8

The Weakly-Interacting Slim Particle encyclopedia (WISPedia) is a comprehensive reference work dedicated to the systematic compilation of theoretical models, Effective Field Theori…

hep-ph2026

The COSMIC WISPers White Paper: The physics case for Weakly Interacting Slim Particles

Ariel Arza, Deniz Aybas, Shyam Balaji +124

Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particula…