Journal article
Pion decay constraints on exotic 17 MeV vector bosons
Physical review. D, Vol.108(5), 055011
09/11/2023
DOI: 10.1103/PhysRevD.108.055011
Abstract
We derive constraints on the couplings of light vector particles to all first-generation Standard Model fermions using leptonic decays of the charged pion, & pi;+ & RARR; e+& nu;eX & mu;. In models where the net charge to which X & mu; couples to is not conserved, no lepton helicity flip is required for the decay to happen, enhancing the decay rate by factors of O(m4 & pi;/m2em2X). A past search at the SINDRUM-I spectrometer severely constrains this possibility. In the context of the hypothesized 17 MeV particle proposed to explain anomalous 8Be, 4He, and 12C nuclear transitions claimed by the ATOMKI experiment, this limit rules out vector-boson explanations and poses strong limits on axial-vector ones.
Details
- Title: Subtitle
- Pion decay constraints on exotic 17 MeV vector bosons
- Creators
- Matheus Hostert - University of MinnesotaMaxim Pospelov - University of Minnesota
- Resource Type
- Journal article
- Publication Details
- Physical review. D, Vol.108(5), 055011
- DOI
- 10.1103/PhysRevD.108.055011
- ISSN
- 2470-0010
- eISSN
- 2470-0029
- Publisher
- Amer Physical Soc
- Number of pages
- 11
- Grant note
- desc0011842 / U.S. Department of Energy; United States Department of Energy (DOE) Perimeter Institute for Theoretical Physics Government of Canada through the Department of Innovation, Science and Economic Development Province of Ontario through the Ministry of Research, Innovation and Science; Ministry of Research and Technology of the Republic of Indonesia (RISTEK)
- Language
- English
- Date published
- 09/11/2023
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984946630002771
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