1998/08/24 by B. Abbott, M. Abolins, V. Abramov +97
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1103/physrevlett.82.29
published as Phys.Rev.Lett.82:29-34,1999 · 6 pages, 3 figures, submitted to Phys. Rev. Letters, fixed one reference
arxiv created 1998/08/24 · openalex publication_date 1999/01/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We search for new physics using events with one high transverse energy photon, two or more jets, and an apparent imbalance in transverse energy, in pp collisions at the Fermilab Tevatron at √(s)\phantom\rule0ex0ex=\phantom\rule0ex0ex1.8\phantom\rule0ex0exTeV. Such events are predicted for production of supersymmetric particles in some models. No excess is observed beyond expected background. For the parameter space of the minimal supersymmetric standard model with branching fraction B(\stackrel\ifmmode \else \~\fi\ensuremathχ20\ensuremath→\ensuremathγ\stackrel\ifmmode \else \~\fi\ensuremathχ10)\phantom\rule0ex0ex=\phantom\rule0ex0ex1 and m_\stackrel\ifmmode \else \~\fi\ensuremathχ20\ensuremath-m_\stackrel\ifmmode \else \~\fi\ensuremathχ10>20\phantom\rule0ex0exGeV, we obtain a 95% confidence level lower mass limit of 310 GeV for equal mass squarks and gluinos. The results are also interpreted in models with low energy gauge mediated supersymmetry breaking.