Publication
Title
Search for exclusive $\gamma\gamma$ production in hadron-hadron collisions
Author
Institution/Organisation
CDF Collaboration
Abstract
 We have searched for exclusive γγ production in proton-antiproton collisions at √s=1.96   TeV, using 532  pb-1 of integrated luminosity taken by the run II Collider Detector at Fermilab. The event signature requires two electromagnetic showers, each with transverse energy ET>5  GeV and pseudorapidity |η|<1.0, with no other particles detected in the event. Three candidate events are observed. We discuss the consistency of the three events with γγ, π0π0, or ηη production. The probability that other processes fluctuate to ≥3 events is 1.7×10-4. An upper limit on the cross section of pp̅ →p+γγ+p̅ production is set at 410 fb with 95% confidence level.
Language
English
Source (journal)
Physical review letters. - New York, N.Y.
Publication
New York, N.Y. : 2007
ISSN
0031-9007
Volume/pages
99:24(2007), p. 242002,1-242002,7
ISI
000251674300018
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Publication type Subject Affiliation Publications with a UAntwerp address