An update view on the X17 hypothesis

Toni, C. and Barducci, D. (2024) An update view on the X17 hypothesis. Il nuovo cimento C, 47 (3). pp. 1-4. ISSN 1826-9885

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Abstract

In view of the latest experimental results recently released by the ATOMKI collaboration, we critically re-examine the possible theoretical interpretation of the observed anomalies in terms of a new BSM boson X with mass ∼ 17 MeV. To this end we employ a multipole expansion method and give an estimate for the range of values of the nucleon couplings to the new light state in order to match the experimental observations. Our conclusions identify the axial vector state as the most promising candidate, while other spin/parity assignments seems disfavored for a combined explanation.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 29 Jul 2024 14:10
Last Modified: 29 Jul 2024 14:10
URI: http://eprints.bice.rm.cnr.it/id/eprint/23072

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