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Study of and at Belle

Study of and at Belle. Search Motivation. To measure 111 mass with the best accuracy, including systematics; To confirm BaBar observation of ; Analogue with D sJ. decay with isospin violation. was observed by BaBaR , CLEO,. Belle. Properties. Decay Diagrams. s. s.

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Study of and at Belle

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  1. Study of and at Belle

  2. Search Motivation • To measure 111 mass with the best accuracy, including systematics; • To confirm BaBar observation of ; • Analogue with DsJ decay with isospin violation was observed byBaBaR, CLEO, Belle

  3. Properties

  4. Decay Diagrams s s s u s s s c d u s d d calibration modes s s u c s u s s s u c s s d d u s

  5. Reconstruction ffit=Gaussian+P3

  6. Reconstruction ffit=Gaussian+P3

  7. Properties

  8. Reconstruction ffit=Crystal Ball+P3•arctg

  9. Summary

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