R-symmetry breaking in supersymmetric hybrid inflation

被引：14

作者：

Civiletti, Matthew ^{[1
]}

Rehman, Mansoor Ur ^{[1
]}

Sabo, Eric ^{[1
]}

Shafi, Qaisar ^{[1
]}

Wickman, Joshua ^{[1
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Bartol Res Inst, Newark, DE 19716 USA

来源：

PHYSICAL REVIEW D | 2013年 / 88卷 / 10期

关键词：

PARTICLE PHYSICS MODELS; FLIPPED SU(5); RADIATIVE-CORRECTIONS; ORIGIN; PROBE; MU;

D O I：

10.1103/PhysRevD.88.103514

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider a supersymmetric hybrid inflation scenario in which the U(1) R symmetry is explicitly broken by Planck scale suppressed operators in the superpotential. We provide an example with minimal Kahler potential, with the R-symmetry breaking term relevant during inflation being alpha S-4, where S denotes the well-known gauge singlet inflaton superfield. The inflationary potential takes into account the radiative and supergravity corrections as well as the soft supersymmetry breaking terms. For successful inflation, with the scalar spectral index in the currently preferred range, n(s) approximate to 0.97 +/- 0.010, vertical bar alpha vertical bar <= 10(-7). The tensor-to-scalar ratio r less than or similar to 10(-4), while vertical bar dn(s)/dlnk vertical bar similar to O(10(-3)) - O(10(-4)).

引用

页数：10

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