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From the 1 of 12 linked papers with an AI index.

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12 papers

hep-ph2026

Heavy neutral leptons from light scalar in fixed target and forward search experiments

ShivaSankar K. A., Souvik Das, Arindam Das +1

The observation of neutrino masses strongly motivates extensions of the Standard Model, in which heavy neutral leptons acquire Majorana masses through spontaneous $U(1…

hep-ph2026

Quantum spin correlations in -mediated production at future lepton colliders

ShivaSankar K. A., Arindam Das, Sanjoy Mandal

The paper examines how quantum spin correlations in top‑quark pair production at future lepton colliders can reveal the presence of a neutral Z′ gauge boson from anomaly‑free U(1)…

hep-ph2026

Forward Searches for Heavy Neutrinos and Bosons at FCC-hh

ShivaSankar K. A., Souvik Das, Arindam Das +1

The discovery of neutrino masses strongly motivates extensions of the Standard Model containing heavy neutral leptons and additional gauge interactions. We investigate the prospect…

hep-ph2026

Particle and Gravitational Wave Probes of Minimal Seesaw Neutrinos

Sanjoy Mandal, Rishav Roshan, Jose W. F. Valle

Observable gravitational waves (GWs) from first-order phase transitions (FOPTs) can coexist with distinct particle physics signatures. These include same-sign dilepton plus four~je…

hep-ph2026

Probing lepton number violation at FCC-ee

Praveen Bharadwaj, Sanjoy Mandal, Rojalin Padhan +2

We propose high-multiplicity final-state signatures, such as with denoting , , as probes of lepton number violation (LN…

hep-ph2026

Probing Inelastic Dark Matter via Cosmic-Ray Upscattering in NGC 1068

Eung Jin Chun, Sanjoy Mandal, Abhishek Roy

We study constraints on sub-GeV inelastic dark matter (iDM) from cosmic-ray (CR) cooling in the active galactic nucleus (AGN) NGC 1068. In dense dark matter (DM) spikes surrounding…