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18 papers · 2 filters
Measurement of the gamma gamma -> pi+ pi- and gamma gamma -> K+ K- processes at energies of 2.4 - 4.1 GeV
H. Nakazawa
We have measured pi+pi- and K+K- production in two-photon collisions using 87.7 /fb of data collected with the Belle detector at the asymmetric energy e+e- collider KEKB. The cross…
Observation of an Isotriplet of Excited Charmed Baryons Decaying to
R. Mizuk
We report the observation of an isotriplet of excited charmed baryons, decaying into Lambda_c+ pi-, Lambda_c+ pi0 and Lambda_c+ pi+. We measure the mass differences M(Lambda_c+ pi)…
Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions
T. Okabe
We present spectra of prompt electrons from decays of neutral and charged B mesons. The results are based on 140 /fb of data collected by the Belle detector on the Upsilon(4S) reso…
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…
Observation of , and
G. Majumder
We report the first observation of a number of decay modes of the B meson, namely , and , where $(nπ)…
Study of B0 -> rho+-pi-+ Time-dependent CP Violation at Belle
C. C. Wang
We present a time-dependent analysis of CP violation in B0 -> rho pi decays based on a 140 1/fb data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asy…
Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays
S. -K. Choi, S. L. Olsen
We report the observation of a near-threshold enhancement in the omega-J/psi invariant mass distribution for exclusive B-->K omega J/psi decays. The results are obtained from a 253…
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…
Time-Dependent CP Violation Effects in Partially Reconstructed Decays
T. Gershon
We report measurements of time-dependent decay rates for decays and extraction of CP violation parameters related to . We use a partial reconstruction…
Improved Measurements of Partial Rate Asymmetry in B -> h h Decays
Y. Chao, P. Chang
We report improved measurements of the partial rate asymmetry (Acp) in B -> h h decays with 140fb^-1 of data collected with the Belle detector at the KEKB e+e- collider. Here h sta…
Study of double charmonium production in e^+ e^- annihilation at \sqrt{s} ~ 10.6 GeV
K. Abe
We present a new analysis of double charmonium production in e^+ e^- annihilation. The observation of the processes e^+ e^- -> J/psi eta_c, J/psi chi_c0, and J/psi eta_c(2S) is con…
Observation of the Decays B0->K+pi-pi0 and B0->rho-K+
P. Chang
We report the observation of B^0 decays to the K^+pi^-pi^0 final state using a data sample of 78 fb^-1 collected by the Belle detector at the KEKB e^+e^- collider. With no assumpti…
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…
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…
Evidence of B0 --> rho0 pi0
J. Dragic, T. Gershon
We present the first evidence of the decay B0 --> rho0 pi0, using 140fb^-1 of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collid…
Search for the Lepton-Flavor-Violating Decay at Belle
Y. Enari
We have searched for the Lepton Flavor Violating decay using a data sample of 84.3 fb accumulated with the Belle detector at KEK. The -meson was detected…
An inclusive measurement of the photon energy spectrum in b->s gamma decays
P. Koppenburg
We report a fully inclusive measurement of the flavour changing neutral current decay b->s gamma in the energy range 1.8 GeV < E* < 2.8 GeV, covering 95% of the total spectrum. Usi…
Observation of Large CP Violation and Evidence for Direct CP Violation in B0-->pi+pi- Decays
K. Abe
We report the first observation of CP-violating asymmetries in B0 --> pi+pi- decays based on a 140 fb-1 data sample collected at the Upsilon(4S) resonance with the Belle detector a…