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Observation of exclusive charmonium production and γγ→μ +μ- in pp̄ collisions at s=1.96TeV

Abstract:

In CDF we have observed the reactions p+p̄→p+X+p̄, with X being a centrally produced J/ψ, ψ(2S), or χc0, and γγ→μ+μ- in pp̄ collisions at s=1.96TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, γ+p→J/ψ(ψ(2S))+p, observed here for the first time in hadron-hadron collisions. We also observe exclusive χc0→J/ψ+γ. The cross sections dσ...

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Journal:
Physical Review Letters More from this journal
Volume:
102
Issue:
24
Publication date:
2009-06-15
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Pubs id:
pubs:106085
UUID:
uuid:c87f1c90-a5fc-416d-9edc-f75315601f91
Local pid:
pubs:106085
Source identifiers:
106085
Deposit date:
2012-12-19

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