Leptonic meson decays into invisible ALP

Alda Gallo, J. (Universidad de Zaragoza) ; Guerrera, A.W.M. ; Peñaranda, S. (Universidad de Zaragoza) ; Rigolin, S.

Resumen: The theoretical calculation of pseudo–scalar leptonic decay widths into an invisible ALP, M→ℓνℓa, is reviewed. Assuming generic flavor–conserving ALP couplings to SM fermions and a generic ALP mass, ma, the latest experimental results for pseudo–scalar leptonic decays are used to provide updated bounds on the ALP–fermion Lagrangian sector. Constrains on the ALP-quark couplings obtained from these channels are not yet competitive with the ones derived from FCNC processes, like M→Pa decays. These leptonic decays can, however, provide the most stringent model–independent upper bounds on ALP-leptons couplings for ma in the (sub)–GeV range.

Idioma: Inglés

DOI: 10.1016/j.nuclphysb.2022.115791

Año: 2022

Publicado en: NUCLEAR PHYSICS B 979 (2022), 115791 [14 pp.]
ISSN: 0550-3213

Factor impacto JCR: 2.8 (2022)

Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 15 / 29 = 0.517 (2022) - Q3 - T2

Factor impacto CITESCORE: 5.8 - Physics and Astronomy (Q1)

Factor impacto SCIMAGO: 0.938 - Nuclear and High Energy Physics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGIID-DGA/2015-E24-2
Financiación: info:eu-repo/grantAgreement/ES/DIIU-DGA/European Social Fund
Financiación: info:eu-repo/grantAgreement/EC/H2020/674896/EU/The Elusives Enterprise: Asymmetries of the Invisible Universe/ELUSIVES
Financiación: info:eu-repo/grantAgreement/EC/H2020/690575/EU/InvisiblesPlus/InvisiblesPlus
Financiación: info:eu-repo/grantAgreement/EC/H2020/860881/EU/Revealing how hidden symmetries shape the universe/HIDDeN
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2015-65745-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/PGC2018-095328-B-I00
Financiación: info:eu-repo/grantAgreement/ES/UZ-IBERCAJA-CAI/CB5-21

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)