# The double mass hierarchy pattern: Simultaneously understanding quark and lepton mixing

Hollika, Wolfgang Gregor; Saldaña Salazar, Ulises Jesús

Abstract:
The charged fermion masses of the three generations exhibit the two strong hierarchies m3&#8811;m2&#8811;m1 . We assume that also neutrino masses satisfy m&#957;3>m&#957;2>m&#957;1 and derive the consequences of the hierarchical spectra on the fermionic mixing patterns. The quark and lepton mixing matrices are built in a general framework with their matrix elements expressed in terms of the four fermion mass ratios, mu/mc , mc/mt , md/ms and ms/mb , and me/m&#956; , m&#956;/m&#964; , m&#957;1/m&#957;2 and m&#957;2/m&#957;3 , for the quark and lepton sector, respectively. In this framework, we show that the resulting mixing matrices are consistent with data for both quarks and leptons, despite the large leptonic mixing angles. The minimal assumption we take is the one of hierarchical masses and minimal flavor symmetry breaking that strongly follows from phenomenology. No special structure of the mass matrices has to be assumed that cannot be motivated by this minimal assumption. This analysis allows us to predict the neutrino mass spectrum and set the mass of the lightest neutrino ... mehr

 Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP) Publikationstyp Zeitschriftenaufsatz Jahr 2015 Sprache Englisch Identifikator ISSN: 0550-3213KITopen ID: 1000045361 Erschienen in Nuclear Physics B Band 892 Seiten 364–389 Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft KITopen Landing Page