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Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms

Publication ,  Journal Article
Richardson, TR; Schindler, MR; Pastore, S; Springer, RP
Published in: Physical Review C
May 1, 2021

The interpretation of experiments that search for neutrinoless double-β decay relies on input from nuclear theory. Cirigliano et al. [Phys. Rev. Lett. 120, 202001 (2018)PRLTAO0031-900710.1103/PhysRevLett.120.202001] recently showed that, for the light Majorana exchange formalism, effective field theory calculations require a nn→ppe-e- contact term at leading order. They estimated the size of this contribution by relating it to measured charge-independence-breaking (CIB) nucleon-nucleon interactions and making an assumption about the relative sizes of CIB operators. We show that the assumptions underlying this approximation are justified in the limit of the number of colors, Nc, being large. We also obtain a large-Nc hierarchy among CIB nucleon-nucleon interactions that is in agreement with phenomenological results.

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Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

May 1, 2021

Volume

103

Issue

5

Related Subject Headings

  • 5106 Nuclear and plasma physics
 

Citation

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Richardson, T. R., Schindler, M. R., Pastore, S., & Springer, R. P. (2021). Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms. Physical Review C, 103(5). https://doi.org/10.1103/PhysRevC.103.055501
Richardson, T. R., M. R. Schindler, S. Pastore, and R. P. Springer. “Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms.” Physical Review C 103, no. 5 (May 1, 2021). https://doi.org/10.1103/PhysRevC.103.055501.
Richardson TR, Schindler MR, Pastore S, Springer RP. Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms. Physical Review C. 2021 May 1;103(5).
Richardson, T. R., et al. “Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms.” Physical Review C, vol. 103, no. 5, May 2021. Scopus, doi:10.1103/PhysRevC.103.055501.
Richardson TR, Schindler MR, Pastore S, Springer RP. Large- Nc analysis of two-nucleon neutrinoless double- β decay and charge-independence-breaking contact terms. Physical Review C. 2021 May 1;103(5).

Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

May 1, 2021

Volume

103

Issue

5

Related Subject Headings

  • 5106 Nuclear and plasma physics