264 citations · 2.1k across the 67 of their papers we have counts for
69 papers
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…
Prospects for Neutrino Observation and Mass Measurement from Binary Neutron Star Mergers
Vedran Brdar, Dibya S. Chattopadhyay, Samiur R. Mir +2
Over the next decade, diffuse supernova neutrino background (DSNB) events are expected in Hyper-Kamiokande. Another neutrino source that has received far less at…
Double Bangs at IceCube as a Window to the Neutrino Mass Origin
Samiur R. Mir, Carlos A. Argüelles, K. S. Babu +1
Neutrino oscillation parameters are subject to renormalization group (RG) evolution, just like all couplings and masses of Standard Model (SM) particles. Within the SM extended wit…
Dark-Matter-Enhanced Probe of Relic Neutrino Clustering
Writasree Maitra, Anna M. Suliga, Vedran Brdar +1
We propose heavy decaying dark matter (DM) as a new probe of the cosmic neutrino background (CB). Heavy DM, with mass GeV, decaying into neutrinos can be a new so…
Finding BSM Needles in Electromagnetic Haystacks at DUNE
Vedran Brdar, Bhaskar Dutta, Wooyoung Jang +5
In this work, motivated by several beyond the Standard Model signal topologies, we perform detailed background mitigation analyses for the DUNE near detector. Specifically, we inve…
PT2GWFinder: A Package for Cosmological First-Order Phase Transitions and Gravitational Waves
Vedran Brdar, Marco Finetti, Marco Matteini +2
The detection of gravitational waves from binary black hole and neutron star mergers by ground-based interferometers, as well as the evidence for a gravitational wave background fr…
Neutron Star Eclipses as Axion Laboratories
Vedran Brdar, Dibya S. Chattopadhyay
In light-shining-through-walls experiments, axions and axion-like particles (ALPs) are searched for by exposing an optically thick barrier to a laser beam. In a magnetic field, pho…
Does the 220 PeV Event at KM3NeT Point to New Physics?
Vedran Brdar, Dibya S. Chattopadhyay
The KM3NeT collaboration recently reported the observation of KM3-230213A, a neutrino event with an energy exceeding 100 PeV, more than an order of magnitude higher than the most e…
Collider Prospects for the Neutrino Magnetic Moment Portal
Vedran Brdar, Ying-Ying Li, Samiur R. Mir +1
The transition magnetic moment between active and sterile neutrinos is theoretically well-motivated scenario beyond the Standard Model, which can be probed in cosmology, astrophysi…
Looping Around Neutrino Charge Radius at Ultra-Near Reactor Experiments
Vedran Brdar, Leonardo J. Ferreira Leite, George A. Parker +1
We scrutinize the potential of upcoming ultra-near reactor neutrino experiments to detect radiative corrections in the elastic neutrino-electron scattering channel, focusing on the…
Supernovae Time Profiles as a Probe of New Physics at Neutrino Telescopes
Jeff Lazar, Ying-Ying Li, Carlos A. Arguelles +1
Neutrino telescopes, including IceCube, can detect galactic supernova events by observing the collective rise in photomultiplier count rates with a sub-second time resolution. Leve…
Magnetar-powered Neutrinos and Magnetic Moment Signatures at IceCube
Ting Cheng, Hao-Jui Kuan, Ying-Ying Li +1
The IceCube collaboration pioneered the detection of neutrino events and the identification of astrophysical sources of high-energy neutrinos. In this s…
New Directions for ALP Searches Combining Nuclear Reactors and Haloscopes
Fernando Arias-Aragón, Vedran Brdar, Jérémie Quevillon
In this work we propose reactoscope, a novel experimental setup for axion-like particle (ALP) searches. Nuclear reactors produce a copious number of photons, a fraction of which co…
Beyond Tree Level with Solar Neutrinos: Towards Measuring the Flavor Composition and CP Violation
Vedran Brdar, Xun-Jie Xu
After being produced as electron neutrinos (), solar neutrinos partially change their flavor to and en route to Earth. Although the flavor ratio of the flux…
Short Baseline Oscillations and the Gallium Mystery
Vedran Brdar
Data from several neutrino experiments suggest an anomalous neutrino flavor transition across relatively short baselines which is in conflict with the three-flavor neutrino oscilla…
Towards Resolving the Gallium Anomaly
Vedran Brdar, Julia Gehrlein, Joachim Kopp
A series of experiments studying neutrinos from intense radioactive sources have reported a deficit in the measured event rate which, in combination, has reached a statistical sign…
The Neutrino Magnetic Moment Portal and Supernovae: New Constraints and Multimessenger Opportunities
Vedran Brdar, André de Gouvêa, Ying-Ying Li +1
We scrutinize the hypothesis that gauge singlet fermions -- sterile neutrinos -- interact with Standard Model particles through the transition magnetic moment portal. These interac…
Neutrino Origin of LHAASO's 18 TeV GRB221009A Photon
Vedran Brdar, Ying-Ying Li
LHAASO collaboration detected photons with energy above 10 TeV from the most recent gamma-ray burst (GRB), GRB221009A. Given the redshift of this event, , photons of su…
Theory of Neutrino Physics -- Snowmass TF11 (aka NF08) Topical Group Report
André de Gouvêa, Irina Mocioiu, Saori Pastore +44
This is the report for the topical group Theory of Neutrino Physics (TF11/NF08) for Snowmass 2021. This report summarizes the progress in the field of theoretical neutrino physics…
Addressing the Short-Baseline Neutrino Anomalies with Energy-Dependent Mixing Parameters
K. S. Babu, Vedran Brdar, André de Gouvêa +1
Several neutrino experiments have reported results that are potentially inconsistent with our current understanding of the lepton sector. A candidate solution to these so-called sh…