Z. Zhang

activity

19992026

most citedObservation of electron-antineutrino disappearance at Daya Bay

2.2k citations · 31.8k across the 513 of their papers we have counts for

collaborators

Showing 2004Show all

32 papers · 1 filter

hep-ex2004★ 64 cited

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…

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★ 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★ 58 cited

Observation of B+ --> K1(1270)+ gamma

Heyoung Yang

We report the observation of the radiative decay B+ --> K1(1270)+ gamma using a data sample of 140 fb-1 taken at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e-…

hep-ex2004★ 40 cited

Measurement of Cross Sections for $D^{0} D ˉ^{0}$ and $D^{+} D^{-}$ Production in $e^{+} e^{-}$ Annihilation at $s = 3.773$ GeV

BES Collaboration

The cross sections for $D^{0} D ˉ^{0}$ and $D^{+} D^{-}$ production at 3.773 GeV have been measured with BES-II detector at BEPC. These measurements are made by analyzing a data sample…

nucl-ex2004★ 216 cited

Minijet deformation and charge-independent angular correlations on momentum subspace $(η, ϕ)$ in Au-Au collisions at $s_{N N}$ = 130 GeV

STAR Collaboration, J. Adams

First measurements of charge-independent correlations on angular difference variables $η_{1} - η_{2}$ (pseudorapidity) and $ϕ_{1} - ϕ_{2}$ (azimuth) are presented for primary charged hadro…

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★ 30 cited

Direct Measurement of the Pseudoscalar Decay Constant fD+

BES Collaboration

The absolute branching fraction of $D^{+} \to μ^{+} ν$ has been directly measured by an analysis of a data sample of about 33 $p b^{- 1}$ collected around $s = 3.773$ GeV with…

hep-ex2004★ 37 cited

Direct Measurement of the Branching Fraction for the Decay of $D^{+} \to K ˉ^{0} e^{+} ν_{e}$ and Determination of $Γ (D^{0} \to K^{-} e^{+} ν_{e}) /Γ (D^{+} \to K ˉ^{0} e^{+} ν_{e})$

BES Collaboration

The absolute branching fraction for the decay $D^{+} \to K ˉ^{0} e^{+} ν_{e}$ is determined using $5321 \pm 149 \pm 160$ singly tagged $D^{-}$ sample from the data collected around 3.773 Ge…

hep-ex2004★ 5 cited

First observations of $ψ (2 S)$ and $χ_{c J} (1 P)$ decays to four-body final states $h^{+} h^{-} K_{S}^{0} K_{S}^{0}$

M. Ablikim

$χ_{c 0}$ , $χ_{c 1}$ , and $χ_{c 2}$ decays to $π^{+} π^{-} K_{S}^{0} K_{S}^{0}$ and $K^{+} K^{-} K_{S}^{0} K_{S}^{0}$ , as well as $ψ (2 S)$ decay to $π^{+} π^{-} K_{S}^{0} K_{S}^{0}$ are presented. The branching fractions of these…

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…

nucl-ex2004★ 638 cited

Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV

STAR Collaboration

The results from the STAR Collaboration on directed flow (v_1), elliptic flow (v_2), and the fourth harmonic (v_4) in the anisotropic azimuthal distribution of particles from Au+Au…

hep-ex2004

Observation of B+ --> K1(1270)+ gamma

K. Abe

We report the observation of the radiative decay B+ --> K1(1270)+ gamma using a data sample of 140 fb-1 taken at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e-…

hep-ex2004★ 26 cited

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…

hep-ex2004★ 346 cited

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…

hep-ex2004★ 20 cited

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…

hep-ex2004★ 7 cited

Time-Dependent CP Violation Effects in Partially Reconstructed $B^{0} \to D^{*} π$ Decays

T. Gershon

We report measurements of time-dependent decay rates for $B^{0} \to D^{*\mp} π^{\pm}$ decays and extraction of CP violation parameters related to $ϕ_{3}$ . We use a partial reconstruction…

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★ 97 cited

The $σ$ pole in $J / ψ \to ω π^{+} π^{-}$

BES Collaboration

Using a sample of 58 million $J / ψ$ events recorded in the BESII detector, the decay $J / ψ \to ω π^{+} π^{-}$ is studied. There are conspicuous $ω f_{2} (1270)$ and $b_{1} (1235) π$ signals. At lo…

hep-ex2004★ 64 cited

Direct Measurements of the Branching Fractions for $D^{0} \to K^{-} e^{+} ν_{e}$ and $D^{0} \to π^{-} e^{+} ν_{e}$ and Determinations of the Form Factors $f_{+}^{K} (0)$ and $f_{+}^{π} (0)$

BES Collaboration

The absolute branching fractions for the decays $D^{0} \to K^{-} e^{+} ν_{e}$ and $D^{0} \to π^{-} e^{+} ν_{e}$ are determined using $7584 \pm 198 \pm 341$ singly tagged $D ˉ^{0}$ sample from the dat…

Measurement of the gamma gamma -> pi+ pi- and gamma gamma -> K+ K- processes at energies of 2.4 - 4.1 GeV

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

Observation of an Isotriplet of Excited Charmed Baryons Decaying to Λc+​π

Observation of B+ --> K1(1270)+ gamma

Measurement of Cross Sections for D0Dˉ0 and D+D− Production in e+e− Annihilation at s​=3.773 GeV

Minijet deformation and charge-independent angular correlations on momentum subspace (η,ϕ) in Au-Au collisions at sNN​​ = 130 GeV

Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions

Observation of B+ -> K+ eta gamma

Direct Measurement of the Pseudoscalar Decay Constant fD+

Direct Measurement of the Branching Fraction for the Decay of D+→Kˉ0e+νe​ and Determination of Γ(D0→K−e+νe​)/Γ(D+→Kˉ0e+νe​)

First observations of ψ(2S) and χcJ​(1P) decays to four-body final states h+h−KS0​KS0​

Evidence for Direct CP Violation in B0 -> K+- pi-+ Decays

Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV

Observation of B+ --> K1(1270)+ gamma

Study of B0 -> rho+-pi-+ Time-dependent CP Violation at Belle

Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays

Search for D^0-D^0bar mixing in D^0 -> K+pi- decays and measurement of the doubly-Cabibbo-suppressed decay rate

Time-Dependent CP Violation Effects in Partially Reconstructed B0→D∗π Decays

Improved Measurements of Partial Rate Asymmetry in B -> h h Decays

Study of double charmonium production in e^+ e^- annihilation at \sqrt{s} ~ 10.6 GeV

Observation of the Decays B0->K+pi-pi0 and B0->rho-K+

Observation of B+ to Lambda Lambdabar K+

The σ pole in J/ψ→ωπ+π−

Direct Measurements of the Branching Fractions for D0→K−e+νe​ and D0→π−e+νe​ and Determinations of the Form Factors f+K​(0) and f+π​(0)

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

Measurement of Cross Sections for $D^{0} D ˉ^{0}$ and $D^{+} D^{-}$ Production in $e^{+} e^{-}$ Annihilation at $s = 3.773$ GeV

Minijet deformation and charge-independent angular correlations on momentum subspace $(η, ϕ)$ in Au-Au collisions at $s_{N N}$ = 130 GeV

Direct Measurement of the Branching Fraction for the Decay of $D^{+} \to K ˉ^{0} e^{+} ν_{e}$ and Determination of $Γ (D^{0} \to K^{-} e^{+} ν_{e}) /Γ (D^{+} \to K ˉ^{0} e^{+} ν_{e})$

First observations of $ψ (2 S)$ and $χ_{c J} (1 P)$ decays to four-body final states $h^{+} h^{-} K_{S}^{0} K_{S}^{0}$

Time-Dependent CP Violation Effects in Partially Reconstructed $B^{0} \to D^{*} π$ Decays

The $σ$ pole in $J / ψ \to ω π^{+} π^{-}$

Direct Measurements of the Branching Fractions for $D^{0} \to K^{-} e^{+} ν_{e}$ and $D^{0} \to π^{-} e^{+} ν_{e}$ and Determinations of the Form Factors $f_{+}^{K} (0)$ and $f_{+}^{π} (0)$