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Nucleon-nucleon coincidence measurement in the non-mesonic weak decay of 5_Lambda-He and 12_Lambda-C hypernuclei
S. Okada, S. Ajimura, K. Aoki +30
We have measured both yields of neutron-proton and neutron-neutron pairs emitted from the non-mesonic weak decay process of 5_Lambda-He and 12_Lambda-C hypernuclei produced via the…
Evidence for Direct CP Violation in B0 -> K+- pi-+ Decays
Y. Chao
We report evidence for direct CP violation in the decay B0 -> K+-pi-+ with 253/fb of data collected with the Belle detector at the KEKB e+e- collider. Using 275 million B B_bar pai…
Search for D^0-D^0bar mixing in D^0 -> K+pi- decays and measurement of the doubly-Cabibbo-suppressed decay rate
J. Li, Z. P. Zhang, A. J. Schwartz
We have searched for mixing in the D0-D0bar system by measuring the decay-time distribution of D0->K+pi- decays. The analysis uses 90 fb^{-1} of data collected by the Belle detecto…
Observation of B+ to Lambda Lambdabar K+
Y. -J. Lee, M. -Z. Wang
We report the first observation of the charmless hyperonic B decay, B^+ --> Lambda Lambdabar K^+, using a 140 fb^-1 data sample recorded at the Upsilon(4S) resonance with the Belle…
Neutron and proton energy spectra from the non-mesonic weak decays of 5_Lambda-He and 12_Lambda-C
S. Okada, S. Ajimura, K. Aoki +30
We have simultaneously measured the energy spectra of neutrons and protons emitted in the non-mesonic weak decays of 5_Lambda-He and 12_Lambda-C hypernuclei produced via the (pi^+,…
Measurement of Branching Fraction and CP Asymmetry in B+ ->rho+ pi0
J. Zhang
We report a measurement of the branching fraction for the decay based on a 140 data sample collected with the Belle detector at the KEKB asymmetric…