Phenomenological and cosmological aspects of a minimal GUT scenario

被引：58

作者：

Dorsner, Ilja

Perez, Pavel Fileviez

Felipe, Ricardo Gonzalez

机构：

[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal

[2] Univ Tecn Lisboa, Ctr Fis Teor Particulas, Inst Super Tecn, P-1049001 Lisbon, Portugal

[3] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy

来源：

NUCLEAR PHYSICS B | 2006年 / 747卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2006.05.006

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Several phenomenological and cosmological aspects of a minimal extension of the Georgi-Glashow model, where the Higgs sector is composed by 5(H), 15(H), and 24(H), are studied. It is shown that the constraints coming from the unification of gauge interactions up to two-loop level predict light scalar lepto-quarks. In this GUT scenario, the upper bound on the total proton decay lifetime is tau(p) <= 1.4 x 10(36) years. The possibility to explain the matter-anti matter asymmetry in the universe through the decays of SU(2)(L) scalar triplets is also studied in the simplest extension of our GUT scenario, which consists on the addition of right-handed neutrinos. We find that a successful triplet seesaw leptogenesis implies an upper bound on the scalar leptoquark mass, M-Phi b <= 10(6-7) GeV. We conclude that this GUT scenario can be tested at the next generation of proton decay experiments and future colliders through the production of scalar leptoquarks. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：312 / 327

页数：16

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