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A Narrow Neutrino Window for the LZ Event
Vedran Brdar, Dibya S. Chattopadhyay
The LUX-ZEPLIN (LZ) experiment has reported an event consistent with a keV nuclear recoil. Explaining the absence of lower-energy recoil events typically calls for some form…
Solar Constraints on Heavy Neutral Leptons with Mixing
Vedran Brdar, Samiur R. Mir, Xun-Jie Xu
The mixing of heavy neutral leptons (HNLs) with tau neutrinos remains largely unconstrained compared to their mixing with electron and muon neutrinos. In this work, we investigate…
Four, One, and None: Quantifying the Ultra-High-Energy Neutrino Anomaly Across ANITA-IV, KM3NeT, and IceCube
Dibya S. Chattopadhyay, Carlos A. Argüelles, Vedran Brdar
The four near-horizon neutrino-like events reported by ANITA-IV and the ultra-high-energy track-like event KM3-230213A observed by KM3NeT imply neutrino event rates that are in ten…
Ultra-High-Energy Tau Neutrinos as Probes of Lorentz Invariance
Vedran Brdar, Samiur R. Mir
Neutrino telescopes have detected astrophysical neutrinos with energies up to PeV. Several current and proposed experiments aim to observe neutrinos at even higher energ…
Exploring Quantumness at Long-Baseline Neutrino Experiments
Murshed Alam, Vedran Brdar, Dibya S. Chattopadhyay
Violations of classicality can be probed through measurements performed on a system at different times, as proposed by Leggett and Garg. Specifically, violations of Leggett-Garg in…