Bounds on the Gluino Mass from a Global Parton Density Analysis

2004/08/19 by Edmond L. Berger, Berger, Edmond L.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0408217

5 pages, 1 figure. To be published in the Proceedings of the 12th International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2004) June 17-23, 2004, Tsukuba, Japan

arxiv created 2004/08/19 · arxiv updated 2009/12/01

Abstract

Parton distribution functions for protons are devised in which a light gluino is included along with standard model quark, antiquark, and gluon constituents. A global analysis of a large set of hadronic scattering data provides empirical constraints on the allowed range of the gluino mass as a function of the value of the strong coupling strength alpha_s(M_Z). We find that the gluino mass m_\widetildeg > 12 GeV for the standard model world-average value alpha_s(M_Z)=0.118. Gluino masses as small as 10 GeV are admissible provided that alpha_s(M_Z) > 0.12, about one standard deviation above the world-average value. Current hadron scattering data are insensitive to the presence of gluinos heavier than about 100 - 150 GeV.

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