The existence of nonzero neutrino masses points to the likely existence of multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (HNLs). In this white paper, we discuss the present experimental status of HNLs including colliders, beta decay, accelerators, as well as astrophysical and cosmological impacts. We discuss the importance of continuing to search for HNLs, and its potential impact on our understanding of key fundamental questions, and additionally we outline the future prospects for next-generation future experiments or upcoming accelerator run scenarios

(2023). The present and future status of heavy neutral leptons [journal article - articolo]. In JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. Retrieved from https://hdl.handle.net/10446/264433

The present and future status of heavy neutral leptons

Leo Redi, Federico;
2023-01-01

Abstract

The existence of nonzero neutrino masses points to the likely existence of multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (HNLs). In this white paper, we discuss the present experimental status of HNLs including colliders, beta decay, accelerators, as well as astrophysical and cosmological impacts. We discuss the importance of continuing to search for HNLs, and its potential impact on our understanding of key fundamental questions, and additionally we outline the future prospects for next-generation future experiments or upcoming accelerator run scenarios
articolo
2023
Abdullahi, Asli M; Barham Alzás, Pablo; Batell, Brian; Beacham, James; Boyarsky, Alexey; Carbajal, Saneli; Chatterjee, Animesh; Crespo-Anadón, José I; Deppisch, Frank F; De Roeck, Albert; Drewes, Marco; Martin Gago, Alberto; Gonzalez Suarez, Rebeca; Goudzovski, Evgueni; Hatzikoutelis, Athanasios; Hernandez-Garcia, Josu; Hostert, Matheus; Hufnagel, Marco; Ilten, Philip; Izmaylov, Alexander; Kelly, Kevin J; Klarić, Juraj; Kopp, Joachim; Kulkarni, Suchita; Lamoureux, Mathieu; Lanfranchi, Gaia; López-Pavón, Jacobo; Mikulenko, Oleksii; Mooney, Michael; Nemevšek, Miha; Ovchynnikov, Maksym; Pascoli, Silvia; Plestid, Ryan; Rashad Darwish, Mohamed; Redi, Federico Leo; Ruchayskiy, Oleg; Ruiz, Richard; Shaposhnikov, Mikhail; Shchutska, Lesya; Shoemaker, Ian M; Shrock, Robert; Sousa, Alex; Van Remortel, Nick; Syvolap, Vsevolod; Takhistov, Volodymyr; Tastet, Jean-Loup; Timiryasov, Inar; Vincent, Aaron C; Jaehoon, Yu
(2023). The present and future status of heavy neutral leptons [journal article - articolo]. In JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. Retrieved from https://hdl.handle.net/10446/264433
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