Comparison of SUSY spectra generators for natural SUSY and string landscape predictions

• Published in: The European physical journal. C, Particles and fields Vol. 82; no. 2; pp. 1 - 17
• Main Authors: Baer, Howard, Barger, Vernon, Martinez, Dakotah
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2022; Springer; Springer Nature B.V; SpringerOpen
• Subjects: Astronomy; Astrophysics and Cosmology; Building codes; Cosmology; Elementary Particles; Generators; Hadrons; Heavy Ions; Large Hadron Collider; LHC; Mass spectra; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; Statistical analysis; string phenomenology; String Theory; Strings; Supersymmetry
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-022-10141-2

Models of natural supersymmetry give rise to a weak scale m weak ∼ m W , Z , h ∼ 100 GeV without any (implausible) finetuning of independent contributions to the weak scale. These models, which exhibit radiatively driven naturalness (RNS), are expected to arise from statistical analysis of the string landscape wherein large soft terms are favored, but subject to a not-too-large value of the derived weak scale in each pocket universe of the greater multiverse. The string landscape picture then predicts, using the Isajet SUSY spectra generator Isasugra, a statistical peak at m h ∼ 125 GeV with sparticles generally beyond current LHC search limits. In this paper, we investigate how well these conclusions hold up using other popular spectra generators: SOFTSUSY, SPHENO and SUSPECT (SSS). We built a computer code DEW4SLHA which operates on SUSY Les Houches Accord files to calculate the associated electroweak naturalness measure Δ EW . The SSS generators tend to yield a Higgs mass peak ∼ 125 –127 GeV with a superparticle mass spectra rather similar to that generated by Isasugra. In an Appendix, we include loop corrections to Δ EW in a more standard notation.