ar X iv : h ep - p h / 02 12 33 1 v 2 1 7 Se p 20 03 BA - 02 - 40 Inflationary Cosmology with Five Dimensional SO ( 10 )

ar X iv : h ep - p h / 02 12 33 1 v 3 1 5 Ja n 20 04 BA - 02 - 40 Inflationary Cosmology with Five Dimensional SO ( 10 )

We discuss inflationary cosmology in a five dimensional SO(10) model compactified on S/(Z2×Z ′ 2), which yields SU(3)c×SU(2)L×U(1)Y ×U(1)X below the compactification scale. The gauge symmetry SU(5) × U(1)X is preserved on one of the fixed points, while “flipped” SU(5)×U(1)X is on the other fixed point. Inflation is associated with U(1)X breaking, and is implemented through F -term scalar potent...

ar X iv : h ep - p h / 02 12 33 1 v 1 2 2 D ec 2 00 2 BA - 02 - 40 Inflation and Leptogenesis with Five Dimensional SO ( 10 )

We present a five dimensional SO(10) model compactified on S/(Z2×Z ′ 2), which yields SU(3)c×SU(2)L×U(1)Y ×U(1)X below the compactification scale. The gauge symmetry SU(5) × U(1)X is preserved on one of the fixed points, while ‘flipped’ SU(5) × U(1)′X is respected on the other fixed point. Inflation is associated with U(1)X breaking, and is implemented through F-term scalar potentials on the tw...

ar X iv : h ep - p h / 03 02 12 9 v 1 1 7 Fe b 20 03 Scalar σ meson effects in radiative ρ 0 - meson decays

ar X iv : h ep - p h / 02 09 33 2 v 1 2 7 Se p 20 02 1 K → ππ Electroweak Penguins in the Chiral Limit

We report on dispersive and finite energy sum rule analyses of the electroweak penguin matrix elements (ππ)2|Q7,8|K 0 in the chiral limit. We accomplish the correct perturbative matching (scale and scheme dependence) at NLO in αs, and we describe two different strategies for numerical evaluation.

ar X iv : h ep - p h / 06 02 19 2 v 1 2 1 Fe b 20 06 UT - 06 - 01 Minimal Supergravity , Inflation , and All That

We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We emphasize that all the phenomenological requirements from cosmology and particle physics are sat...