ar X iv : h ep - p h / 04 06 03 4 v 2 1 3 Ju n 20 04 One Loop Predictions of the Finely Tuned SSM

ar X iv : h ep - p h / 04 06 03 4 v 1 3 J un 2 00 4 One Loop Predictions of the Finely Tuned SSM

We study the finely tuned SSM, recently proposed by Arkani-Hamed and Dimopoulos, at the one loop level. The runnings of the four gaugino Yukawa couplings, the µ term, the gaugino masses, and the Higgs quartic coupling are computed. The Higgs mass is found to be 130 – 170 GeV for M s > 10 6 GeV. If the Yukawa coupling constants are measured at the 1% level, this can determine the SUSY breaking s...

ar X iv : a st ro - p h / 04 06 56 7 v 1 2 4 Ju n 20 04 1

ar X iv : h ep - t h / 04 06 04 8 v 1 4 Ju n 20 04 Possibility of a dynamical Higgs mechanism and of the respective phase transition induced by a boundary

The dynamical quantum effects arising due to the boundary presence with two types of boundary conditions (BC) satisfied by scalar fields are studied. It is shown that while the Neumann BC lead to the usual scalar field mass generation, the Dirichlet BC give rise to the dynamical mechanism of spontaneous symmetry breaking. Due to the later, there arises the possibility of the respective phase tr...

ar X iv : h ep - t h / 04 06 15 4 v 1 1 8 Ju n 20 04 Characters of the Positive Energy UIRs of

We give character formulae for the positive energy unitary irreducible representations of the N-extended D=4 conformal superalgebras su(2,2/N). Using these we also derive decompositions of long superfields as they descend to the unitarity threshold. These results are also applicable to irreps of the complex Lie superalgebras sl(4/N). Our derivations use results from the representation theory of...

ar X iv : h ep - p h / 04 06 33 8 v 1 3 0 Ju n 20 04

We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution ...