Bigazzi , F , Cotrone , A L , Järvinen , M & Kiritsis , E 2020 , ' Non-derivative axionic couplings to nucleons at large and small N ' , Journal of High Energy Physics , no. 1 , 100 . https://doi.org/10.1007/JHEP01(2020)100
Title: | Non-derivative axionic couplings to nucleons at large and small N |
Author: | Bigazzi, Francesco; Cotrone, Aldo L.; Järvinen, Matti; Kiritsis, Elias |
Contributor organization: | Helsinki Institute of Physics Department of Physics |
Date: | 2020-01-17 |
Language: | eng |
Number of pages: | 63 |
Belongs to series: | Journal of High Energy Physics |
ISSN: | 1029-8479 |
DOI: | https://doi.org/10.1007/JHEP01(2020)100 |
URI: | http://hdl.handle.net/10138/312448 |
Abstract: | Among the possible CP-odd couplings of the axion to ordinary matter, the most relevant ones for phenomenology are the Yukawa couplings to nucleons. We analyze such non-derivative couplings within three different approaches: standard effective field theory, the Skyrme model and holographic QCD. In all the cases, the couplings can be related to the CP-odd non-derivative couplings to nucleons of the low-lying mesons and the eta '. Using the effective field theory approach we discuss how to derive the expressions for the CP-odd interaction terms as functions of the parameters of the effective Lagrangian at generic number of colors N-c and flavors N-f. Then, we compute the CP-odd couplings to nucleons of the axion, the eta ' and the pseudo-Goldstone mesons in both the Skyrme and the holographic QCD model with N-f = 2, 3. We present model-independent expressions for the coefficients of the non-derivative axion-nucleon couplings. This allows us to provide quantitative estimates of these couplings. |
Subject: |
Chiral Lagrangians
Cosmology of Theories beyond the SM Gauge-gravity correspondence 1/N Expansion ELECTRIC-DIPOLE MOMENT STRONG-CP PROBLEM SKYRME MODEL STATIC PROPERTIES THETA-TERM NEUTRON BARYONS LIMIT INSTANTONS DEPENDENCE 114 Physical sciences |
Peer reviewed: | Yes |
Rights: | cc_by |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
Total number of downloads: Loading...
Files | Size | Format | View |
---|---|---|---|
Bigazzi2020_Art ... vativeAxionicCouplings.pdf | 1.221Mb |
View/ |