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Observation of the narrow state X(3872)-->J/psipi+pi- in pp collisions at sqaure root of s=1.96 TeV.

Abstract:
We report the observation of a narrow state decaying into J/psipi+pi- and produced in 220 pb(-1) of p p-bar collisions at =1.96 Tesqaure root of sV in the CDF II experiment. We observe 730+/-90 decays. The mass is measured to be 3871.3+/-0.7(stat)+/-0.4(syst) MeV/c2, with an observed width consistent with the detector resolution. This is in agreement with the recent observation by the Belle Collaboration of the X(3872) meson.

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Journal:
Physical review letters
Volume:
93
Issue:
7
Pages:
072001
Publication date:
2004-08-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:67e658b4-62b6-4822-8c2e-a1d44faefc2d
Source identifiers:
8537
Local pid:
pubs:8537
Language:
English

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