کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1852466 1528797 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
String completion of an SU(3)c ⊗ SU(3)L ⊗ U(1)X electroweak model
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
String completion of an SU(3)c ⊗ SU(3)L ⊗ U(1)X electroweak model
چکیده انگلیسی

The extended electroweak SU(3)c⊗SU(3)L⊗U(1)XSU(3)c⊗SU(3)L⊗U(1)X symmetry framework “explaining” the number of fermion families is revisited. While 331-based schemes can not easily be unified within the conventional field theory sense, we show how to do it within an approach based on D-branes and (un)oriented open strings, on Calabi–Yau singularities. We show how the theory can be UV-completed in a quiver setup, free of gauge and string anomalies. Lepton and baryon numbers are perturbatively conserved, so neutrinos are Dirac-type, and their lightness results from a novel TeV scale seesaw mechanism. Dynamical violation of baryon number by exotic instantons could induce neutron–antineutron oscillations, with proton decay and other dangerous R-parity violating processes strictly forbidden.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 759, 10 August 2016, Pages 471–478
نویسندگان
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