Massive right-handed neutrinos in B̅ → D^* τX̅ decay

@misc{das2026massive,
  title = {{Massive right-handed neutrinos in $\barB \to D^* τ\bar X$ decay}},
  author = {Nilakshi Das and Alakabha Datta and Tejhas Kapoor and Danny Marfatia and Lopamudra Mukherjee},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2606.16166},
  eprint = {2606.16166},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.16166},
}

TY  - UNPB
TI  - Massive right-handed neutrinos in B̅ → D^* τX̅ decay
AU  - Nilakshi Das
AU  - Alakabha Datta
AU  - Tejhas Kapoor
AU  - Danny Marfatia
AU  - Lopamudra Mukherjee
PY  - 2026
DA  - 2026/09/13
PB  - arXiv
DO  - 10.48550/arxiv.2606.16166
UR  - https://arxiv.org/abs/2606.16166
AB  - We explore signatures of a massive right-handed neutrino (RHN) in angular distributions of B̅ → D^* (→ D π) τ(→ πν_τ) X̅ decays, where X is an invisible state. We assume the new physics is described by the standard model effective field theory extended with an RHN in the MeV-GeV mass range. We calculate for the first time the full differential distributions in terms of the visible final states, including the decay of the τ lepton. We evaluate the sensitivity of various distributions to the new physics operators.
ER  -