Treatment of threshold effects in supersymmetric spectrum computations

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.015010· OSTI ID:20774639

Baer, H ^[1]; Ferrandis, J ^[2]; Kraml, S ^[3]; Porod, W ^[4]

---

1. Dept. of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
2. Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
3. Theory Division, Dept. of Physics, CERN, CH-1211 Geneva 23 (Switzerland)
4. Instituto de Fisica Corpuscular, CSIC, Valencia (Spain)

We take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implementations in public spectrum codes, together with suggestions for improvements. In concrete examples, we compare results of Isajet 7.72 and SPheno 2.2.3, and present the improvements done in Isajet 7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.

• OSTI ID: 20774639
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevD.73.015010; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
I CODES
JET MODEL
QUANTUM FIELD THEORY
RENORMALIZATION
REST MASS
S CODES
SPARTICLES
SUPERSYMMETRY