M. Hazumi

activity

19952026

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

2k citations · 20.9k across the 251 of their papers we have counts for

collaborators

Showing 2006Show all

28 papers · 1 filter

hep-ex2006★ 31 cited

Observation of the decay Upsilon(4S) -> Upsilon(1S) pi+ pi-

The Belle Collaboration

We study transitions between Upsilon states with the emission of charged pions using 477 fb^{-1} of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- colli…

hep-ex2006★ 40 cited

Search for Invisible Decay of the $Υ (1 S)$

The Belle Collaboration, O. Tajima, H. Hayashii +4

We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)->pi+pi-Upsilon(1S) transition using a data sample of 2.9 fb^{-1} at the Upsilon(3S) res…

hep-ex2006★ 7 cited

Measurement of the ratio Br(D0 --> pi+pi-pi0)/Br(D0 --> K-pi+pi0)

K. Abe

We report a high-statistics measurement of the relative branching fraction Br(D0 --> pi+pi-pi0)/Br(D0 --> K-pi+pi0). A 357 inverse fb data sample collected with the Belle detector…

hep-ex2006★ 4 cited

Search for B+ -> J/psi eta' K+ and B0 -> J/psi eta' Ks0 Decays

Q. L. Xie

We report the results of searches for B+ -> J/psi eta' K+ and B0 -> J/psi eta' Ks0 decays, using a sample of 388 x 10^6 BBbar pairs collected with the Belle detector at the Upsilon…

hep-ex2006★ 17 cited

Measurements of exclusive B_s^0 decays at the Y(5S) resonance

A. Drutskoy

Several exclusive $B_{s}^{0}$ decays are studied using a 1.86 fb-1 data sample collected at the Y(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+ e^- collider.…

hep-ex2006★ 25 cited

Measurements of time-dependent CP violation in $B^{0} \to ω K_{S}^{0}$ , $f_{0} (980) K_{S}^{0}$ , $K_{S}^{0} π^{0}$ and $K^{+} K^{-} K_{S}^{0}$ decays

Belle Collaboration

We present measurements of time-dependent CP asymmetries in $B^{0} \to ω K_{S}^{0}$ , $f_{0} (980) K_{S}^{0}$ , $K_{S}^{0} π^{0}$ and $K^{+} K^{-} K_{S}^{0}$ based on a sample of 535 $\times 1 0^{6}$ $B B ˉ$ p…

hep-ex2006★ 10 cited

Improved measurements of branching fractions and CP partial rate asymmetries for $B \to ω K$ and $B \to ω π$

by C. -M. Jen, P. Chang, K. Abe +2

We report improved measurements of $B$ to pseudoscalar-vector decays containing an $ω$ meson in the final states. Our results are obtained from a data sample that contains $388\tim…

hep-ex2006★ 18 cited

The first observation of $τ^{\pm} \to ϕ K^{\pm} ν$ decay

Belle Collaboration

We present the first measurement of tau-decays to hadronic final states with a $ϕ$ -meson. This is based on 401.4 fb $^{- 1}$ of data accumulated at the Belle experiment. The branchin…

hep-ex2006★ 29 cited

Observation of B Decays to Two Kaons

S. -W. Lin, P. Chang

Using 449 million BBbar pairs collected with the Belle detector at the KEKB asymmetric-energy e^+e^- collider, we observe clear signals for B^+-> \bar{K}^0 K^+ and B^0-> \bar{K}^0…

hep-ex2006★ 101 cited

Experimental Constraints on the Spin and Parity of the Lambda_c(2880)

R. Mizuk

We report the results of several studies of the Lambda_c+pi+pi-X final state in continuum e+e- annihilation data collected by the Belle detector. An analysis of angular distributio…

hep-ex2006★ 113 cited

Observation of Time-Dependent CP Violation in B0 -> eta' K0 Decays and Improved Measurements of CP Asymmetries in B0 -> phiK0, KsKsKs and B0 -> J/psi K0 Decays

The Belle Collaboration, K. -F. Chen

We present improved measurements of CP-violation parameters in B0->phiK0, eta'K0, KsKsKs decays based on a sample of 535x10^6 BBbar pairs collected at the Y(4S) resonance with the…

hep-ex2006★ 11 cited

Search for Resonant $B^{\pm} \to K^{\pm} h \to K^{\pm} γ γ$ Decays at Belle

Belle Collaboration, J. Wicht

We report measurements and searches for resonant $B^{\pm} \to K^{\pm} h \to K^{\pm} γ γ$ decays where $h$ is a $η, η^{'}, η_{c}, η_{c} (2 S), χ_{c 0}, χ_{c 2}, J / ψ$ meson or the X(3872)…

hep-ex2006★ 12 cited

Improved Measurements of Branching Fractions and CP Asymmetries in B-> eta h Decays

P. Chang

We report improved measurements of B decays with an eta meson in the final state using 492 fb^{-1} of data collected by the Belle detector at the KEKB e^+ e^- collider. We observe…

hep-ex2006★ 15 cited

Study of the charmed baryonic decays $B ˉ^{0} \to Σ_{c}^{++} p ˉ π^{-}$ and $B ˉ^{0} \to Σ_{c}^{0} p ˉ π^{+}$

K. S. Park, H. Kichimi

We study the three-body charmed baryonic decays $B ˉ^{0} \to Σ_{c}^{++} p ˉ π^{-}$ and $B ˉ^{0} \to Σ_{c}^{0} p ˉ π^{+}$ in the four-body final state $\bar{B}^0\toΛ_c^{+}\bar{p}π^+π^-…

hep-ex2006★ 52 cited

Time-Dependent CP Asymmetries in B0 -> Ks pi0 gamma transitions

The Belle Collaboration, Y. Ushiroda, K. Sumisawa

We report measurements of CP violation parameters in B0->Ks pi0 gamma transitions based on a data sample of 535x10^6 BB pairs collected with the Belle detector at the KEKB asymmetr…

hep-ex2006★ 42 cited

Measurement of inclusive $D_{s}$ , $D^{0}$ , and $J / ψ$ rates and determination of the $B_{s}^{()} B ˉ_{s}^{()}$ production fraction in $b b ˉ$ events at the Y(5S) resonance

A. Drutskoy

The inclusive production of $D_{s}$ , $D^{0}$ , and $J / ψ$ mesons is studied using a 1.86 fb $^{- 1}$ data sample collected on the $Υ$ (5S) resonance by the Belle detector at the KEKB asymme…

hep-ex2006★ 190 cited

Observation of a Near-threshold $D^{0} D ˉ^{0} π^{0}$ Enhancement in $B \to D^{0} D ˉ^{0} π^{0} K$ Decay

G. Gokhroo, G. Majumder

We report the first observation of a near-threshold enhancement in the $D^{0} D ˉ^{0} π^{0}$ system from $B \to D^{0} D ˉ^{0} π^{0} K$ decays using a 414 $fb^{- 1}$ data sample col…

hep-ex2006★ 11 cited

Search for Lepton Flavor Violating tau- Decays Including with a K0s Meson

Y. Miyazaki

We have searched for the lepton flavor violating decays $τ^-\to \ell^-\ks$ ( $ℓ = e or μ$ ), using a data sample of 281 fb $^{- 1}$ collected with the Belle detector at the KEKB $…

hep-ex2006★ 19 cited

Search for the h_c meson in B^+- ->h_c K^+-

F. Fang

We report a search for the $h_{c}$ meson via the decay chain $B^{\pm} \to h_{c} K^{\pm}$ , $\etac γ$ with $η_{c} \to K_{S}^{0} K^{\pm} π^{\mp}$ and $p p ˉ$ . No significant signals are obser…

hep-ex2006★ 34 cited

Measurement of the CKM parameter cos(2phi_1) using time-dependent Dalitz analysis of B0bar -> D[Ks pi+ pi-] h0

P. Krokovny

We present a measurement of the angle phi1 of the CKM Unitarity Triangle using time-dependent Dalitz analysis of D -> Ks pi+ pi- decays produced in neutral B meson decay to a neutr…

hep-ex2006★ 55 cited

Measurements of branching fractions and $q^{2}$ distributions for $B \to π ℓ ν$ and $B \to ρ ℓ ν$ Decays with $B \to D^{(*)} ℓ ν$ Decay Tagging

T. Hokuue

We report measurements of the charmless semileptonic decays $B^{0} \to π^{-} / ρ^{-} ℓ^{+} ν$ and $B^{+} \to π^{0} / ρ^{0} ℓ^{+} ν$ , based on a sample of $2.75 \times 1 0^{8}$ $B B ˉ$ e…

hep-ex2006★ 104 cited

Measurement of D0 -> pilnu (Klnu) Form Factors and Absolute Branching Fractions

L. Widhalm

Using a 282 1/fb data sample collected by the Belle experiment at the KEKB e+e- collider, we study D0 decays to K-l+nu and pi-l+nu final states. The D0 flavor and momentum are tagg…

hep-ex2006★ 226 cited

Evidence of the Purely Leptonic Decay B- --> tau- nu_tau-bar

K. Ikado

We present the first evidence of the decay B- --> tau- nu_tau-bar using 414 fb^-1 of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-ener…

hep-ex2006★ 18 cited

Search for neutrinoless decays tau -> lhh and tau -> lV0

Y. Yusa

We have searched for neutrinoless tau lepton decays into l h h or l V0, where l stands for an electron or muon, h for a charged light hadron, pi or K, and V0 for a neutral vector m…