2009/05/31 by Mirjam Cvetič, James Halverson, Robert Richter · 2 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #hep-ph #hep-th
paper · pdf · doi:10.1088/1126-6708/2009/12/063
published as JHEP 0912:063,2009 · 42 pages, 3 figures. v2: R-parity constraints and Yukawa texture analysis improved; typos corrected and references added
arxiv created 2009/09/24 · openalex publication_date 2009/12/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We perform a systematic analysis of globally consistent D-brane quivers which realize the MSSM, and analyze them with respect to their Yukawa couplings. Often, desired couplings are perturbatively forbidden due to the presence of global U(1) symmetries. We investigate the conditions under which D-brane instantons will induce these missing couplings without generating other phenomenological drawbacks, such as R-parity violating couplings or a mu-term which is too large. Furthermore, we systematically analyze which quivers allow for a mechanism that can account for the small neutrino masses and other experimentally observed hierarchies. We show that only a small fraction of the globally consistent D-brane quivers exhibits phenomenology compatible with experimental observations.