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Single-photon signals at LEP in supersymmetric models with a light gravitino
J. Lopez, D. Nanopoulos, A. Zichichi
We study the single-photon signals expected at LEP in models with a very light gravitino. The dominant process is neutralino-gravitino production (e+e- -> chi+ G) with subsequent n…
No-scale supergravity confronts LEP diphoton events
J. Lopez, D. Nanopoulos, A. Zichichi
We examine the possibility that some anomalous acoplanar diphoton events observed at LEP may be consistent with the predictions of our previously proposed one-parameter no-scale su…
Supersymmetric photonic signals at LEP
J. Lopez, D. Nanopoulos, A. Zichichi
We explore and contrast the single-photon and diphoton signals expected at LEP 2, that arise from neutralino-gravitino (e^+ e^- -> chi + gravitino -> gamma + E_miss) and neutralino…
Study of Charged-Current ep Interactions at Q2 > 200 GeV2 with the ZEUS Detector at HERA
ZEUS Collaboration
Deep inelastic charged--current reactions have been studied in and collisions at a center of mass energy of about $300\,\gev$ in the kinematic region $Q^2\greater200\…
Measurement of Elastic Photoproduction at HERA
ZEUS Collaboration
The production of mesons in the reaction () at a median of has been studied with the ZEUS…
Experimental constraints on a stringy SU(5)U(1) model
J. Lopez, D. Nanopoulos, A. Zichichi
We re-examine the phenomenological aspects of a recently proposed string-derived SU(5)U(1) one-parameter supergravity model, and explore the sensitivity of the model predic…