2νββ spectrum in chiral effective field theory
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10509874" target="_blank" >RIV/00216208:11320/25:10509874 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dZ1.BmZvp9" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dZ1.BmZvp9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2025)082" target="_blank" >10.1007/JHEP06(2025)082</a>
Alternative languages
Result language
angličtina
Original language name
2νββ spectrum in chiral effective field theory
Original language description
We investigate two-neutrino double beta decay (2 nu beta beta) in chiral effective field theory. We find contributions from weak magnetism and double-weak pion-exchange at next-to-leading-order in the chiral power counting. We discuss the impact of the chiral corrections on the electron spectra and find that they should be included in analyses of 2 nu beta beta decay that aim to uncover new physics signatures in the electron spectrum. We illustrate this point by revisiting the effect of sterile neutrinos and non-standard charged interactions. We also find that the pion-exchange contributions involve nuclear matrix elements that are related to those appearing in neutrinoless double beta decay (0 nu beta beta). We investigate whether the 0 nu beta beta nuclear matrix elements can be obtained from detailed measurements of the energy spectrum of the outgoing electrons in 2 nu beta beta transitions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
Neuveden
Issue of the periodical within the volume
6
Country of publishing house
DE - GERMANY
Number of pages
27
Pages from-to
82
UT code for WoS article
001519229600002
EID of the result in the Scopus database
2-s2.0-105008441866