TY - JOUR
T1 - The observability of an additional discrete symmetry in the Standard Model
AU - Zubkov, M. A.
N1 - Funding Information:
This work was partly supported by RFBR Grants 06-02-16309, 05-02-16306, and 04-02-16079.
PY - 2007/5/24
Y1 - 2007/5/24
N2 - Standard Model may be defined with the additional discrete symmetry, i.e. with the gauge group SU (3) × SU (2) × U (1) / Z (Z = Z6, Z3 or Z2) instead of the usual SU (3) × SU (2) × U (1). It has the same perturbation expansion as the conventional one. However, it may describe nature in a different way at the energies compared to the triviality bound (of about 1 TeV). In this Letter we present a possibility to observe this difference assuming that the gauge group of the Standard Model is embedded into the gauge group of an a priori unknown model, which describes physics at a TeV scale. In particular, due to the additional Z3 or Z6 symmetry, monopoles with masses of the order of 10 TeV should appear, which may become the lightest topologically stable monopoles. We illustrate our results by consideration of the petite unification of quarks and leptons.
AB - Standard Model may be defined with the additional discrete symmetry, i.e. with the gauge group SU (3) × SU (2) × U (1) / Z (Z = Z6, Z3 or Z2) instead of the usual SU (3) × SU (2) × U (1). It has the same perturbation expansion as the conventional one. However, it may describe nature in a different way at the energies compared to the triviality bound (of about 1 TeV). In this Letter we present a possibility to observe this difference assuming that the gauge group of the Standard Model is embedded into the gauge group of an a priori unknown model, which describes physics at a TeV scale. In particular, due to the additional Z3 or Z6 symmetry, monopoles with masses of the order of 10 TeV should appear, which may become the lightest topologically stable monopoles. We illustrate our results by consideration of the petite unification of quarks and leptons.
UR - http://www.scopus.com/inward/record.url?scp=34247585698&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2007.04.005
DO - 10.1016/j.physletb.2007.04.005
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AN - SCOPUS:34247585698
SN - 0370-2693
VL - 649
SP - 91
EP - 94
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1
ER -