2007•Proceedings of International Europhysics Conference on High Energy Physics — PoS(HEP2005)Open access

New particles at Belle

Pasha Pakhlov

Abstract

We report the observation of new decay modes of the X(3872) and the study of possible J PC quantum number assignments for this state.We present observations of new charmonium states, produced in different processes: B decays, e + e -annihilation and γγ interactions.These results are obtained from a large data sample collected with the Belle detector near the ϒ(4S) resonance, at the KEKB asymmetric-energy e + e -collider.

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Key concepts: KEKB, Collider, Annihilation, Physics, Electron–positron annihilation, Detector, Particle physics, Resonance (particle physics)