Search for R-parity Violating Supersymmetry in the Dielectron Channel

Details Search for R-parity Violating Supersymmetry in the Dielectron Channel Search for R-parity Violating Supersymmetry in the Dielectron Channel

1999-07-14

arxiv.org/abs/hep-ex/9907019v2

Phys.Rev.Lett.83:4476-4481,1999

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 2 figures, Text modified to fit under PRL line limit, One reference added

Scientific paper

10.1103/PhysRevLett.83.4476

We report on a search for R-parity violating supersymmetry in p-pbar collisions at sqrt(s) = 1.8 TeV using the D0 detector at Fermilab. Events with at least two electrons and four or more jets were studied. We observe 2 events in 99 +- 4.4 pb-1 of data, consistent with the expected background of 1.8 +- 0.4 events. This result is interpreted within the framework of minimal low-energy supergravity supersymmetry models. Squarks with mass below 243 GeV/c^2 and gluinos with mass below 227 GeV/c^2 are excluded at the 95% confidence level (C. L.) for A_0=0, mu < 0$, tan beta=2 and a finite value for R-parity violating Yukawa coupling lambda'_1jk (j=1, 2 and k=1, 2, 3). For equal squark and gluino masses, the corresponding mass limit is 277 GeV/c^2.

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