Skip to main content

Limits on Extra Dimensions and New Particle Production in the Exclusive Photon and Missing Energy Signature in pp-bar Collisions at sqrt[s]=1.8 TeV

Publication ,  Journal Article
al, DAE
Published in: Physical Review Letters
December 2002

The exclusive gamma E̸T 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 sqrt[s]=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 MD 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.

Duke Scholars

Published In

Physical Review Letters

Publication Date

December 2002

Volume

89

Start / End Page

281801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Published In

Physical Review Letters

Publication Date

December 2002

Volume

89

Start / End Page

281801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences