Neutrinoless double beta decay in chiral effective field theory: lepton number violation at dimension seven
Journal Article
·
· Journal of High Energy Physics (Online)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); New Mexico Consortium, Los Alamos, NM (United States)
- Nikhef, Amsterdam (Netherlands)
Here, we analyze neutrinoless double beta decay (0νββ) within the framework of the Standard Model Effective Field Theory. Apart from the dimension-five Weinberg operator, the first contributions appear at dimension seven. We classify the operators and evolve them to the electroweak scale, where we match them to effective dimension-six, -seven, and -nine operators. In the next step, after renormalization group evolution to the QCD scale, we construct the chiral Lagrangian arising from these operators. We then develop a power-counting scheme and derive the two-nucleon 0νββ currents up to leading order in the power counting for each lepton-number-violating operator. We argue that the leading-order contribution to the decay rate depends on a relatively small number of nuclear matrix elements. We test our power counting by comparing nuclear matrix elements obtained by various methods and by different groups. We find that the power counting works well for nuclear matrix elements calculated from a specific method, while, as in the case of light Majorana neutrino exchange, the overall magnitude of the matrix elements can differ by factors of two to three between methods. We also calculate the constraints that can be set on dimension-seven lepton-number-violating operators from 0νββ experiments and study the interplay between dimension-five and -seven operators, discussing how dimension-seven contributions affect the interpretation of 0νββ in terms of the effective Majorana mass m ββ .
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- Dutch Organization for Scientific Research; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1416309
- Report Number(s):
- LA-UR-17-27799
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 12 Vol. 2017; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
A neutrinoless double beta decay master formula from effective field theory
The MAJORANA DEMONSTRATOR: A search for neutrinoless double-beta decay of ⁷⁶Ge
Neutrinoless double-beta decay and related topics
Journal Article
·
Thu Dec 13 19:00:00 EST 2018
· Journal of High Energy Physics (Online)
·
OSTI ID:1492612
The MAJORANA DEMONSTRATOR: A search for neutrinoless double-beta decay of ⁷⁶Ge
Journal Article
·
Thu Apr 30 20:00:00 EDT 2015
· Journal of Physics. Conference Series
·
OSTI ID:1193644
Neutrinoless double-beta decay and related topics
Journal Article
·
Fri Jul 15 00:00:00 EDT 2011
· Physics of Particles and Nuclei
·
OSTI ID:22981728