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research article
Production of new charmoniumlike states in e+e-→J/ψD() D̄() at s 10.6GeV
We report a study of the processes e+e-→J/ψD()D̄(). In J/ψDD̄ we observe a significant enhancement in the DD̄ invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156-20+25±15)MeV/c2 and Γ=(139-61+111±21)MeV. We also report a new measurement of the X(3940) mass and width: M=(3942-6+7±6) MeV/c2 and Γ=(37-15+26±8)MeV. The analysis is based on a 693fb-1 data sample recorded near the Υ(4S) resonance by the Belle detector at the KEKB asymmetric-energy collider. © 2008 The American Physical Society.
Type
research article
Web of Science ID
WOS:000256206400017
Scopus ID
2-s2.0-44249122818
Authors
Pakhlov, P.
•
Adachi, I.
•
Aihara, H.
•
Arinstein, K.
•
Aushev, T.
•
Aziz, T.
•
Bakich, A.M.
•
Balagura, V.
•
Barberio, E.
•
Bedny, I.
Publication date
2008
Published in
Volume
100
Issue
20
Article Number
202001
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
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