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Search for exclusive γγ production in hadron-hadron collisions

Abstract:

We have searched for exclusive γγ production in proton-antiproton collisions at s=1.96TeV, using 532pb-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>5GeV 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 oth...

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Journal:
Physical Review Letters
Volume:
99
Issue:
24
Publication date:
2007-12-14
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Pubs id:
pubs:117346
UUID:
uuid:cbb83c66-78a8-43df-8d21-bb2154a513b4
Local pid:
pubs:117346
Source identifiers:
117346
Deposit date:
2012-12-19

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