Observation of the narrow state X(3872)-\u3e J/psi pi(+)pi(-) in (p)over-barp collisions at root s=1.96 TeV
- Authors
- Acosta D
- Affolder T
- Ahn MH
- Akimoto T
- Albrow MG
- Ambrose D
- Amerio S
- Amidei D
- Anastassov A
- Anikeev K
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- Apollinari G
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- MAURO DELL'ORSO
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- SIMONE DONATI
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- Publication date
- 1 January 2004
- Publisher
- 'Purdue University (bepress)'
- Doi
Abstract
We report the observation of a narrow state decaying into J/psipi(+)pi(-) and produced in 220 pb(-1) of (p) over barp collisions at roots=1.96 TeV 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/c(2), 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) mesonSimilar works
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