10 papers
Muon Bremsstrahlung as a New Probe of Dark Sector at Neutrino Experiments
P. S. Bhupal Dev, Bhaskar Dutta, Aparajitha Karthikeyan +2
We show that muon bremsstrahlung provides a new production mechanism for light new physics at accelerator neutrino experiments. The intense, highly collimated muon beam produced al…
UV-Complete Models for a Light Axial Gauge Boson
Bhaskar Dutta, Aparajitha Karthikeyan, Rabindra N. Mohapatra
We present new anomaly free gauge models where the gauge field only has axial vector couplings to both quarks and leptons. We use the left-right symmetric universal seesaw models a…
Prying Open the Dark Sector Window with SBND Off-Target Mode
Bhaskar Dutta, Debopam Goswami, Aparajitha Karthikeyan +4
Accelerator-based neutrino experiments with high-intensity proton beams and advanced detector technologies provide a powerful and complementary approach to probing physics beyond t…
Monophotons from Scalar Portal Dark Matter at Neutrino Experiments
Bhaskar Dutta, Debopam Goswami, Aparajitha Karthikeyan
In this work, we investigate monophoton signatures arising from dark matter via a scattering process that is mediated by a virtual scalar and a Stan…
Drell-Yan Production of New Particles at Fixed-Target Experiments: Heavy Neutral Lepton as a Case Study
Francis M. Burk, P. S. Bhupal Dev, Bhaskar Dutta +3
We demonstrate the sensitivity of Drell-Yan production processes from deep inelastic scattering in searches for beyond-the-Standard Model (BSM) physics at fixed-target or beam-bump…
Photon Excess from Dark Matter and Neutrino Scattering at MiniBooNE and MicroBooNE
Bhaskar Dutta, Aparajitha Karthikeyan, Doojin Kim +2
We propose new solutions to accommodate both the MiniBooNE electron-like and MicroBooNE photon low-energy excesses, based on interactions involving light dark matter and/or neutrin…