Axion couplings to electroweak gauge bosons
Entity
UAM. Departamento de Física TeóricaPublisher
SpringerDate
2019-03-01Citation
10.1140/epjc/s10052-019-6732-5
European Physical Journal C 2019.79 (2019): 223
ISSN
1434-6044 (print); 1434-6052 (online)DOI
10.1140/epjc/s10052-019-6732-5Funded by
This project has received support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreements No. 690575 (RISE InvisiblesPlus) and No. 674896 (ITN ELUSIVES). M.B.G and P. Q. also acknowledge support from the the Spanish Research Agency (Agencia Estatal de Investigación) through the grant IFT Centro de Excelencia Severo Ochoa SEV-2016-0597, as well as from the “Spanish Agencia Estatal de Investigación” (AEI) and the EU “Fondo Europeo de Desarrollo Regional” (FEDER) through the Project FPA2016-78645-P. The work of G. A. was supported through an ESR contract of the H2020 ITN Elusives (H2020-MSCA-ITN-2015//674896-ELUSIVES) and through a “La Caixa” predoctoral Grant of Fundación La Caixa. The work of P.Q. was supported through a “La Caixa-Severo Ochoa” predoctoral grant of Fundación La Caixa.Project
Gobierno de España. SEV-2016-0597; Gobierno de España. FPA2016-78645-P; info:eu-repo/grantAgreement/EC/H2020/674896/UE//ELUSIVES; info:eu-repo/grantAgreement/EC/H2020/690575/UE//InvisiblesPlusEditor's Version
https://doi.org/10.1140/epjc/s10052-019-6732-5Subjects
Electroweak gauge bosons; Invisible QCD axion; Individual gauge boson couplings; Gluonic coupling; FísicaRights
© 2019, The Author(s)Abstract
We determine the model-independent component of the couplings of axions to electroweak gauge bosons, induced by the minimal coupling to QCD inherent to solving the strong CP problem. The case of the invisible QCD axion is developed first, and the impact on W and Z axion couplings is discussed. The analysis is extended next to the generic framework of heavy true axions and low axion scales, corresponding to scenarios with enlarged confining sector. The mass dependence of the coupling of heavy axions to photons, W and Z bosons is determined. Furthermore, we perform a two-coupling-at-a-time phenomenological study where the gluonic coupling together with individual gauge boson couplings are considered. In this way, the regions excluded by experimental data for the axion-WW, axion-ZZ and axion-Zγ couplings are determined and analyzed together with the usual photonic ones. The phenomenological results apply as well to ALPs which have anomalous couplings to both QCD and the electroweak bosons
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Google Scholar:Alonso-Álvarez, G.
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Gavela Legazpi, María Belén
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Quilez, P.
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