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New Particles from Belle | | Stephen L. Olsen
; | | Date: |
25 Dec 2004 | | Journal: | J.Phys.Conf.Ser. 9 (2005) 22-31 | | Subject: | hep-ex | | Abstract: | I report recent results on hidden charm spectroscopy from Belle. These include: observation of a near-threshold enhancement in the omega-J/psi invariant mass distribution for exclusive B-->K omega J/psi decays; evidence for the decay X(3872)-->pi+pi-pi0 J/psi, where the pi+pi-pi0 invariant mass distribution has a strong peak between 750 MeV and the kinematic limit of 775 MeV, suggesting that the process is dominated by the sub-threshold decay X-->omega J/psi; and the observation of a peak near 3940 MeV in the J/psi recoil mass spectrum for the inclusive continuum process e+e- --> J/psi X. The results are based on a study of a 287 fb-1 sample of e+e- annihilation data collected at center- of-mass energies around the Upsilon(4S) in the Belle detector at the KEKB collider. | | Source: | arXiv, hep-ex/0412068 | | Services: | Forum | Review | PDF | Favorites | |
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