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Fascinating puzzle called double beta decay (2019)

Kotila, Jenni (2019). Fascinating puzzle called double beta decay. In Maruyama, Reina (Eds.) Symmetries and Order : Algebraic Methods in Many Body Systems : A symposium in celebration of the career of Professor Francesco Iachello, AIP Conference Proceedings, 2150. American Institute of Physics, 020009. DOI: 10.1063/1.5124581

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Julkaisun kaikki tekijät tai toimittajat: Kotila, Jenni

Emojulkaisu: Symmetries and Order : Algebraic Methods in Many Body Systems : A symposium in celebration of the career of Professor Francesco Iachello

Emojulkaisun toimittajat: Maruyama, Reina

Konferenssin paikka ja aika: Connecticut, USA, 05.-06.10.2018

eISBN: 978-0-7354-1895-0

Lehti tai sarja: AIP Conference Proceedings

ISSN: 0094-243X

eISSN: 1935-0465

Julkaisuvuosi: 2019

Sarjan numero: 2150

Artikkelinumero: 020009

Kustantaja: American Institute of Physics

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1063/1.5124581

Avoin saatavuus: Julkaisukanava ei ole avoin

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/65464


The question of whether neutrinos are Majorana or Dirac particles and what are their average masses remains one of the most fundamental problems in physics today. Observation of neutrinoless double beta decay (0νββ) would verify the Majorana nature of the neutrino and constrain the absolute scale of the neutrino mass spectrum. The inverse half-life for 0νββ-decay is given by the product of a phase space factor (PSF), a nuclear matrix element (NME), which both rely on theoretical description, and a function f containing the physics beyond the standard model. Recent calculations of PSF and NME will be reviewed together with comparison to other available results. These calculations serve the purpose of extracting the average neutrino mass if 0νββ-decay is observed, and of guiding searches if 0νββ-decay is not observed. The current situation is then discussed by combining the theoretical results with experimental limits on the half-life of neutrinoless double beta decay. The extracted limits on the average light neutrino mass will be addressed, complemented with a discussion of other possible 0νββ-decay mechanisms and scenarios.

YSO-asiasanat: ydinfysiikka; hiukkasfysiikka; neutriinot

Vapaat asiasanat: double beta decay; nuclear matrix elements

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OKM-raportointi: Kyllä

Raportointivuosi: 2019

JUFO-taso: 1

Viimeisin päivitys 2020-18-08 klo 13:08