The exclusive gammais not an element of(T) signal has a small standard model cross section and is thus a channel sensitive to new physics. This signature is predicted by models with a superlight gravitino or with large extra spatial dimensions. We search for such signals at the Collider Detector at Fermilab, using 87 pb(-1) of data at roots = 1.8 TeV, and extract 95% C.L. limits on these processes. A limit of 221 GeV is set on the scale F(1/2) in supersymmetric models. For 4, 6, and 8 extra dimensions, model-dependent limits on the fundamental mass scale M-D of 0.55, 0.58, and 0.60 TeV, respectively, are found. We also specify a "pseudo-model-independent" method of comparing the results to theoretical predictions.

D., A., T., A., H., A., M. G., A., D., A., D., A., et al. (2002). Limits on extra dimensions and new particle production in the exclusive photon and missing energy signature in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 89(28) [10.1103/PhysRevLett.89.281801].

Limits on extra dimensions and new particle production in the exclusive photon and missing energy signature in p(p)over-bar collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;
2002

Abstract

The exclusive gammais not an element of(T) signal has a small standard model cross section and is thus a channel sensitive to new physics. This signature is predicted by models with a superlight gravitino or with large extra spatial dimensions. We search for such signals at the Collider Detector at Fermilab, using 87 pb(-1) of data at roots = 1.8 TeV, and extract 95% C.L. limits on these processes. A limit of 221 GeV is set on the scale F(1/2) in supersymmetric models. For 4, 6, and 8 extra dimensions, model-dependent limits on the fundamental mass scale M-D of 0.55, 0.58, and 0.60 TeV, respectively, are found. We also specify a "pseudo-model-independent" method of comparing the results to theoretical predictions.
D., A., T., A., H., A., M. G., A., D., A., D., A., et al. (2002). Limits on extra dimensions and new particle production in the exclusive photon and missing energy signature in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 89(28) [10.1103/PhysRevLett.89.281801].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/39060
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