The Korean Physical Society 06130 22, Teheran-ro 7-gil, Gangnam-gu, Seoul, Republic of Korea 610 Representation : Tae Won NOH TEL: 02-556-4737 FAX: 02-554-1643 E-mail : webmaster@kps.or.kr Copyright(C) KPS, All rights reserved.
30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

Neutrino upscattering to heavy neutral leptons (HNLs) as an explanation of the MiniBooNE low-energy excess (LEE)

Not scheduled
5m
Virtual Seoul

Virtual Seoul

Poster BSM searches in neutrinos Poster

Speakers

Jaime Hoefken Zink (Università di Bologna / HIDDeN ITN) Matheus Hostert (Perimeter Institute) Asli Abdullahi (Fermilab) Prof. Silvia Pascoli (University of Bologna) Mr Daniele Massaro (University of Bologna)

Description

The aim of this presentation is to introduce a dark extension of the SM that communicates to it through three portals: neutrino, vector and scalar mixing, by which it could be possible to explain the LEE at MiniBooNE. The model regards particularly the upscattering of HNLs (1 to N heavier Dirac or Majorana neutrinos) by the mediation of a dark photon, Z’, with masses around 10 MeV – 2 GeV, with the subsequent decay into an electron-positron pair that, if sufficiently collimated or asymmetric in energy, can be detected as a single shower event. Additionally, I present a fitting to the reconstructed neutrino energy. Two main cases are considered: 3 ν + 1 HNL (3+1) and 3 ν + 2 HNLs (3+2).

Collaboration HIDDeN

Primary author

Jaime Hoefken Zink (Università di Bologna / HIDDeN ITN)

Co-authors

Matheus Hostert (Perimeter Institute) Asli Abdullahi (Fermilab) Prof. Silvia Pascoli (University of Bologna) Mr Daniele Massaro (University of Bologna)

Presentation Materials