Naslov
Scalar leptoquark in SU(5)

Autori
Doršner, Ilja

Izvornik
Physical Review D - Particles, Fields, Gravitation, and Cosmology (1550-7998) 86 (2012); 055009-1

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

Ključne riječi
12.10.Dm; 13.85.Ni; 14.65.Ha

Sažetak
We address the issue of model dependence of partial proton decays due to exchange of a single scalar leptoquark within a minimal viable $SU(5)$ framework. The minimal setup predicts a flavor part of decay widths for $p \to \pi^+ \bar{; ; ; \nu}; ; ; $ and $p \to K^+ \bar{; ; ; \nu}; ; ; $ processes to depend solely on the known masses and mixing parameters of the quark sector and one extra phase. We accordingly establish an accurate lower limit on the mass of the scalar leptoquark in connection with the relevant experimental constraints on the matter stability. The ratio of decay widths for $p \to \pi^+ \bar{; ; ; \nu}; ; ; $ and $p \to K^+ \bar{; ; ; \nu}; ; ; $ channels turns out to be phase independent and predicts strong suppression of the former width with respect to the latter one. Our results offer a possibility to test the minimal scenario if and when proton decay is observed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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