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Quark mixing sum rules and the right unitarity triangle
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
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
Abstract [en]

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.
Keyword [en]
SU(3) FAMILY SYMMETRY, U(2) FLAVOR SYMMETRY, SEE-SAW MODELS, FERMION MASSES, YUKAWA TEXTURES, PHENOMENOLOGICAL CONSEQUENCES, NEUTRINO MIXINGS, PRECISION TEST, CP VIOLATION, ANGLES
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-28680DOI: 10.1103/PhysRevD.81.033008ISI: 000275069000019Scopus ID: 2-s2.0-77749334556OAI: oai:DiVA.org:kth-28680DiVA: diva2:390836
Note
QC 20110124Available from: 2011-01-24 Created: 2011-01-19 Last updated: 2011-01-24Bibliographically approved

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  • apa
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  • Other locale
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