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A massive right-handed sterile neutrino in three-body B̅→ D*ℓ-N̅R decays - a Monte Carlo simulation study
Abstract
We investigate the differential decay distributions of $\bar{B}\to D^*\ell^-{\bar N}_R $, where NR is a heavy right-handed neutrino (RHN) and ℓ = e, μ. We employ a newly developed Monte Carlo event generator based on the EvtGen framework that can simulate beyond-the-Standard-Model processes. We validate the implementation of the model by comparing the Monte-Carlo results with analytical results for several kinematic variables such as q2 and missing mass, as well as signatures in the angular distributions such as AFB, S3, S5, etc. This MC Generator will enable new experimental searches for RHNs. We discuss the sensitivity of various observables to the presence of an RHN and the feasibility of an experimental analysis at Belle II.
Related
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- NOvA Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations using Neutrino- and Antineutrino-Enriched Samples
BibTeX
@misc{bhattacharya2026massive,
title = {{A massive right-handed sterile neutrino in three-body $\bar B\to D^*\ell^-\bar N_R$ decays - a Monte Carlo simulation study}},
author = {Bhubanjyoti Bhattacharya and Thomas E Browder and Lucien M Cremaldi and Horacio Crotte Ledesma and Nilakshi Das and Alakabha Datta and Tejhas Kapoor and Kumar Pandey and Alexei Sibidanov},
howpublished = {HAL},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.00488},
eprint = {2610.00488},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05781924v1},
}
RIS
TY - UNPB
TI - A massive right-handed sterile neutrino in three-body B̅→ D^*ℓ^-N̅_R decays - a Monte Carlo simulation study
AU - Bhubanjyoti Bhattacharya
AU - Thomas E Browder
AU - Lucien M Cremaldi
AU - Horacio Crotte Ledesma
AU - Nilakshi Das
AU - Alakabha Datta
AU - Tejhas Kapoor
AU - Kumar Pandey
AU - Alexei Sibidanov
PY - 2026
DA - 2026/10/06
PB - HAL
DO - 10.48550/arxiv.2610.00488
UR - https://hal.science/hal-05781924v1
AB - We investigate the differential decay distributions of $\bar{B}\to D^*\ell^-{\bar N}_R $, where N_R is a heavy right-handed neutrino (RHN) and ℓ = e, μ. We employ a newly developed Monte Carlo event generator based on the EvtGen framework that can simulate beyond-the-Standard-Model processes. We validate the implementation of the model by comparing the Monte-Carlo results with analytical results for several kinematic variables such as q^2 and missing mass, as well as signatures in the angular distributions such as A_FB, S_3, S_5, etc. This MC Generator will enable new experimental searches for RHNs. We discuss the sensitivity of various observables to the presence of an RHN and the feasibility of an experimental analysis at Belle II.
ER -