CP violation and CKM predictions from discrete torsion

2002/05/31 by Steven Abel, S. A. Abel, A. W. Owen +1 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th

paper · pdf · doi:10.1016/s0550-3213(02)01121-5

published as Nucl.Phys. B651 (2003) 191-210 · 21 pages, 8 figures, 1 Table. Significant modifications and generalisation. Version to be published

arxiv created 2002/11/22 · openalex publication_date 2003/02/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a supersymmetric D-brane model that has CP spontaneously broken by discrete torsion. The low energy physics is largely independent of the compactification scheme and the kahler metric has `texture zeros' dictated by the choice of discrete torsion. This motivates a simple ansatz for the kahler metric which results in a CKM matrix given in terms of two free parameters, hence we predict a single mixing angle and the CKM phase. The CKM phase is predicted to be close to Pi/3.

Citations

• CPand other gauge symmetries in string theory
• Is CP a Gauge Symmetry?
• Review of particle properties
• Review of Particle Physics

Cited by

• Quark and lepton masses and mixing angles from superstring constructions
• Heterotic Yukawa couplings and continuous Wilson lines
• Interactions in intersecting brane models