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Spectroscopy and new particles
Tadeusz Lesiak
The properties of three new particles X(3872), Y(3940) and Z(3931), recently dicovered by the Belle collaboration, are briefly reviewed. Negative results of the search for the pent…
Observation of B- -> J/psi Lambda pbar and searches for B- -> J/psi Sigma0 pbar and B0 -> J/psi p pbar Decays
Q. L. Xie
We report the observation of B- -> J/psi Lambda pbar and searches for B- -> J/psi Sigma0 pbar and B0 -> J/psi p pbar decays, using a sample of 275 million BBbar pairs collected wit…
Improved measurement of B0bar -> D_s^-D^+ and search for B0bar -> D_s^+D_s^- at Belle
K. Abe
We reconstruct B0bar -> D_s^-D^+ decays using a sample of 275 million BBbar pairs recorded by the Belle experiment, and we measure the branching fraction to be [7.42 +- 0.23(stat)…
Search for D^0-\bar{D^0} mixing using semileptonic decays at Belle
U. Bitenc
A search for mixing in the neutral D meson system has been performed using semileptonic D^0 \to K^(*)- e^+ nu decays. Neutral D mesons from D^*+ \to D^0 pi+ decays are used; the fl…
Search for Lepton and Baryon Number Violating tau- Decays into Lambda-bar pi- and Lambda pi-
Y. Miyazaki
We have searched for tau lepton decays, tau- -> Lambda-bar pi- and tau- -> Lambda pi-, that simultaneously violate the conservation of the lepton and baryon number using a data sam…
Observation of a new charmonium state in double charmonium production in e+ e- annihilation at \sqrt{s} ~ 10.6 GeV
The Belle Collaboration, K. Abe
We report the first observation of a new charmonium state at a mass of . This state, called X(3940), is observed in the process $e^+ e^- \to…