Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment

Barouki, Ryan; Marocco, Giacomo; Sarkar, Subir

doi:10.21468/SciPostPhys.13.5.118

SciPost Physics

Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment

Ryan Barouki, Giacomo Marocco, Subir Sarkar

SciPost Phys. 13, 118 (2022) · published 28 November 2022

doi: 10.21468/SciPostPhys.13.5.118
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Abstract

We revisit the search for heavy neutral leptons with the Big European Bubble Chamber in the 1982 proton beam dump experiment at CERN, focussing on those heavier than the kaon and mixing only with the tau neutrino, as these are far less constrained than their counterparts with smaller mass or other mixings. Recasting the previous search in terms of this model and including additional production and decay channels yields the strongest bounds to date, up to the tau mass. This applies also to our updated bounds on the mixing of heavy neutral leptons with the electron neutrino.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.13.5.118
TI  - Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment
PY  - 2022/11/28
UR  - https://scipost.org/SciPostPhys.13.5.118
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 13
IS  - 5
SP  - 118
A1  - Barouki, Ryan
AU  - Marocco, Giacomo
AU  - Sarkar, Subir
AB  - We revisit the search for heavy neutral leptons with the Big European Bubble Chamber in the 1982 proton beam dump experiment at CERN, focussing on those heavier than the kaon and mixing only with the tau neutrino, as these are far less constrained than their counterparts with smaller mass or other mixings. Recasting the previous search in terms of this model and including additional production and decay channels yields the strongest bounds to date, up to the tau mass. This applies also to our updated bounds on the mixing of heavy neutral leptons with the electron neutrino.
ER  -

@Article{10.21468/SciPostPhys.13.5.118,
	title={{Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment}},
	author={Ryan Barouki and Giacomo Marocco and Subir Sarkar},
	journal={SciPost Phys.},
	volume={13},
	pages={118},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.13.5.118},
	url={https://scipost.org/10.21468/SciPostPhys.13.5.118},
}

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¹ Rudolf Peierls Centre for Theoretical Physics, University of Oxford