Quark mixing sum rules and the right unitarity triangle
2010 (English)In: Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, Vol. 81, no 3, 033008- p.Article in journal (Refereed) Published
In analogy with the recently proposed lepton mixing sum rules, we derive quark mixing sum rules for the case of hierarchical quark mass matrices with 1-3 texture zeros, in which the separate up and down-type 1-3 mixing angles are approximately zero, and V-ub is generated from V-cb as a result of 1-2 up-type quark mixing. Using the sum rules, we discuss the phenomenological viability of such textures, including up to four texture zeros, and show how the right-angled unitarity triangle, i.e., alpha approximate to 90 degrees, can be accounted for by a remarkably simple scheme involving real mass matrices apart from a single element being purely imaginary. In the framework of grand unified theories, we show how the quark and lepton mixing sum rules may combine to yield an accurate prediction for the reactor angle.
Place, publisher, year, edition, pages
2010. Vol. 81, no 3, 033008- p.
SU(3) FAMILY SYMMETRY, U(2) FLAVOR SYMMETRY, SEE-SAW MODELS, FERMION MASSES, YUKAWA TEXTURES, PHENOMENOLOGICAL CONSEQUENCES, NEUTRINO MIXINGS, PRECISION TEST, CP VIOLATION, ANGLES
IdentifiersURN: urn:nbn:se:kth:diva-28680DOI: 10.1103/PhysRevD.81.033008ISI: 000275069000019ScopusID: 2-s2.0-77749334556OAI: oai:DiVA.org:kth-28680DiVA: diva2:390836
QC 201101242011-01-242011-01-192011-01-24Bibliographically approved