The spectra of heterotic standard model vacua | Zendy

Ron Donagi | Zendy; YangHui He | Zendy; Burt A. Ovrut | Zendy; René Reinbacher | Zendy

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The spectra of heterotic standard model vacua

Author(s) -

Ron Donagi,

YangHui He,

Burt A. Ovrut,

René Reinbacher

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/06/070

Subject(s) - heterotic string theory , massless particle , fibered knot , gauge group , physics , sheaf cohomology , quark , torus , particle physics , cohomology , sheaf , pure mathematics , theoretical physics , mathematics , group cohomology , gauge theory , geometry

A formalism for determining the massless spectrum of a class of realisticheterotic string vacua is presented. These vacua, which consist of SU(5)holomorphic bundles on torus-fibered Calabi-Yau threefolds with fundamentalgroup Z_2, lead to low energy theories with standard model gauge group (SU(3)_Cx SU(2)_L x U(1)_Y)/Z_6 and three families of quarks and leptons. A methodologyfor determining the sheaf cohomology of these bundles and the representation ofZ_2 on each cohomology group is given. Combining these results with the actionof a Z_2 Wilson line, we compute, tabulate and discuss the massless spectrum.Comment: 41+1pp, 2 fig

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