Portal de Periódicos da CAPES

Abelian D terms and the superpartner spectrum of anomaly-mediated supersymmetry breaking

2003; American Physical Society; Volume: 68; Issue: 3 Linguagem: Inglês

10.1103/physrevd.68.035006

1538-4500

Brandon Murakami, James D. Wells,

Quantum Chromodynamics and Particle Interactions

We address the tachyonic slepton problem of anomaly mediated supersymmetry breaking using abelian D-terms. We demonstrate that the most general extra U(1) symmetry that does not disrupt gauge coupling unification has a large set of possible charges that solves the problem. It is shown that previous studies in this direction that added both an extra hypercharge D-term and another D-term induced by B-L symmetry (or similar) can be mapped into a single D-term of the general ancillary U(1)_a. The U(1)_a formalism enables identifying the sign of squark mass corrections which leads to an upper bound of the entire superpartner spectrum given knowledge of just one superpartner mass.