Naslov
On unification and nucleon decay in supersymmetric grand unified theories based on SU(5)

Autori
Doršner, Ilja ; Fileviez Perez, Pavel ; Rodrigo, German

Izvornik
Physics letters. B (0370-2693) 649 (2007), 2/3; 197-205

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
GUT; Beyond Standard Model; Nucleon decay.

Sažetak
We investigate the unification constraints in the minimal supersymmetric grand unified theories based on SU(5) gauge symmetry. The most general constraints on the spectrum of minimal supersymmetric SU(5) and flipped SU(5) are shown. The upper bound on the mass of the colored Higgs mediating proton decay is discussed in detail in the context of the minimal supersymmetric SU(5). In the case of the minimal SUSY SU(5) we show that if we stick to the strongest bound on the colored triplet mass coming from dimension five proton decay contributions there is no hope to test this model at future nucleon decay experiments through the dimension six operators. We find a lower bound on the partial proton decay lifetime for all relevant channels in the context of flipped SUSY SU(5). We conclude that flipped SUSY SU(5) might be in trouble if proton decay is found at the next generation of experiments with a lifetime below 10^{; ; 37}; ; years.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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