1997/02/09 by M. Calixto, Manuel Calixto, V. Aldaya +5
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Relativity and Gravitational Theory #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/9702071
3 pages, Latex2e, Presented at 21st International Colloquium on Group Theoretical Methods in Physics, Goslar, Germany, 15-20 Jul 1996
arxiv created 1997/02/09 · openalex publication_date 1997/02/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We provide the theoretic value 1/2 for the quantity sin**2θW=e**2/g**2, as opposite to the experimental value of sin**2θW=1-MW**2/MZ**2 ∼ 0.23, in the electro-weak gauge group SU(2)⊗ U(1)Y. The arguments we use are of topological nature and have to do with natural requirements of globality in the transformations of the gauge algebra. This results supports the idea that the two definitions of sin**2θW cannot be simultaneously identified except, maybe, in an asymptotic limit corresponding to an earlier stage of the Universe, before the spontaneous symmetry breaking had taken place.