skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Treatment of threshold effects in supersymmetric spectrum computations

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [5]
  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)
  5. (Switzerland)
Publication Date:
OSTI Identifier:
20774639
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.73.015010; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Baer, H., Ferrandis, J., Kraml, S., Porod, W., and Institut fuer Theoretische Physik, Univ. Zurich. Treatment of threshold effects in supersymmetric spectrum computations. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.015010.
Baer, H., Ferrandis, J., Kraml, S., Porod, W., & Institut fuer Theoretische Physik, Univ. Zurich. Treatment of threshold effects in supersymmetric spectrum computations. United States. doi:10.1103/PhysRevD.73.015010.
Baer, H., Ferrandis, J., Kraml, S., Porod, W., and Institut fuer Theoretische Physik, Univ. Zurich. Sun . "Treatment of threshold effects in supersymmetric spectrum computations". United States. doi:10.1103/PhysRevD.73.015010.
@article{osti_20774639,
title = {Treatment of threshold effects in supersymmetric spectrum computations},
author = {Baer, H. and Ferrandis, J. and Kraml, S. and Porod, W. and Institut fuer Theoretische Physik, Univ. Zurich},
abstractNote = {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.},
doi = {10.1103/PhysRevD.73.015010},
journal = {Physical Review. D, Particles Fields},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}