P. Koppenburg

activity

20002026

most citedObservation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays

2k citations · 37.2k across the 525 of their papers we have counts for

collaborators

Showing 2004 · hep-exShow all

18 papers · 2 filters

hep-ex2004★ 153 cited

Dalitz analysis of the three-body charmless decays B+=>K+Pi+Pi- and B+=>K+K+K-

A. Garmash

We report results on the Dalitz analysis of three-body charmless B+=>K+Pi+Pi- and B+=>K+K+K- decays based on a 140 fb $^{- 1}$ data sample collected with the Belle detector. Measurem…

hep-ex2004★ 13 cited

Study of the Suppressed Decays $B^{-} \to [K^{+} π^{-}]_{D} K^{-}$ and $B^{-} \to [K^{+} π^{-}]_{D} π^{-}$

M. Saigo

We report a study of the suppressed decays $B^{-} \to [K^{+} π^{-}]_{D} K^{-}$ and $B^{-} \to [K^{+} π^{-}]_{D} π^{-}$ , where $[K^{+} π^{-}]_{D}$ indicates that the $K^{+} π^{-}$ pair originates from a neutral $D$ …

hep-ex2004★ 139 cited

Observation of an Isotriplet of Excited Charmed Baryons Decaying to $Λ_{c}^{+} π$

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)…

hep-ex2004★ 3 cited

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…

hep-ex2004★ 23 cited

Observation of B+ -> K+ eta gamma

S. Nishida

We report measurements of radiative B decays with K eta gamma final states, using a data sample of 253 /fb recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB…

hep-ex2004★ 28 cited

Observation of the D1(2420)->DPI+PI- decays

The Belle Collaboration

We report on the first observation of $D_{1} \to D π^{+} π^{-}$ decays (where the contribution from the dominant known $D_{1} \to D^{*} π$ decay mode is excluded) in the $B \to D_{1} π$ decays. The…

hep-ex2004★ 154 cited

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…

hep-ex2004★ 407 cited

Study of time-dependent CP violation in B0 -> J/Psi pi0 decays

S. U. Kataoka

We report a measurement of CP asymmetry parameters in the decay B0(B0bar) -> J/Psi pi0, which is governed by the b->c cbar d transition. The analysis is based on a 140/fb data samp…

hep-ex2004★ 19 cited

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…

hep-ex2004★ 143 cited

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…

hep-ex2004★ 30 cited

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…

hep-ex2004★ 67 cited

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…

hep-ex2004★ 21 cited

Measurement of Branching Fraction and CP Asymmetry in B+ ->rho+ pi0

J. Zhang

We report a measurement of the branching fraction for the decay $B^{+} \to ρ^{+} π^{0}$ based on a 140 $fb^{- 1}$ data sample collected with the Belle detector at the KEKB asymmetric…

hep-ex2004★ 16 cited

Search for the Lepton-Flavor-Violating Decay $τ^{-} \to μ^{-} η$ at Belle

Y. Enari

We have searched for the Lepton Flavor Violating decay $τ^{-} \to μ^{-} η$ using a data sample of 84.3 fb $^{- 1}$ accumulated with the Belle detector at KEK. The $η$ -meson was detected…

hep-ex2004★ 43 cited

Search for neutrinoless decays tau -> 3l

Y. Yusa

We have searched for neutrinoless tau lepton decays into three charged leptons using an 87.1 fb^{-1} data sample collected with the Belle detector at the KEKB e^+e^- collider. Sinc…

hep-ex2004★ 220 cited

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…

hep-ex2004★ 96 cited

Measurement of the B --> K^* gamma Branching Fractions and Asymmetries

Mikihiko Nakao

We report measurements of the radiative decay B --> K^*γ. The analysis is based on a data sample containing 85.0*10^6 B meson pairs collected by the Belle detector at the KEKB stor…

hep-ex2004★ 77 cited

Observation of Large CP Violation and Evidence for Direct CP Violation in B0-->pi+pi- Decays