Yonsei University

output

19932026

most citedFirst M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

4.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2007 · hep-exShow all

39 papers · 2 filters

hep-ex2007★ 14 cited

Measurement of Time-Dependent CP-Violating Parameters in B0 -> K0S K0S decays

Belle Collaboration, Y. Nakahama, K. Sumisawa

We report a measurement of the CP-violating parameters in B0->K0S K0S decays based on a data sample of 657 million BBbar pairs collected at the Y(4S) resonance with the Belle detec…

hep-ex2007★ 66 cited

Search for Lepton Flavor Violating tau Decays into Three Leptons

Y. Miyazaki

We search for lepton-flavor-violating tau decays into three leptons (electron or muon) using 535 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- c…

hep-ex2007★ 54 cited

Study of B -> D** l nu with full reconstruction tagging

Dmitri Liventsev

We report a study of semileptonic B decays to P-wave D** mesons. Semileptonic decay to D*_2 meson is observed for the first time and its product branching ratio is measured to be B…

hep-ex2007★ 29 cited

Measurement of CP Asymmetries and Branching Fractions in a Time-Dependent Dalitz Analysis of B^0-->(rho pi)^0 and a Constraint on the Quark Mixing Angle phi_2

The Belle Collaboration, A. Kusaka, C. C. Wang

We present the results of a time-dependent Dalitz plot analysis of B0 --> pi+ pi- pi0 decays based on a 414/fb data sample that contains 449 x 10^6 BB pairs. The data was collected…

hep-ex2007★ 180 cited

Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance

The Belle Collaboration, K. -F. Chen, W. -S. Hou +2

We report the first observation of e+e- -> Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and first evidence for e+e- -> Upsilon(3S)pi+pi-, Upsilon(1S)K+K-, near the peak of the Upsilon(5S)…

hep-ex2007★ 34 cited

Observation of Ds1(2536)+ -> D+pi-K+ and angular decomposition of Ds1(2536)+ -> D*+K0S

Belle Collaboration

Using 462/fb of e+e- annihilation data recorded by the Belle detector, we report the first observation of the decay Ds1(2536)+ -> D+pi-K+. The ratio of branching fractions B(Ds1+ -…

hep-ex2007★ 13 cited

Time-Dependent {\boldmath $C P$ }-Violating Asymmetry in $B^{0} \to ρ^{0} γ$ Decays

Y. Ushiroda

We report the first measurement of CP-violation parameters in $B^{0} \to ρ^{0} γ$ decays based on a data sample of $657 \times 1 0^{6} B B ˉ$ pairs collected with the Belle detector at the…

hep-ex2007★ 36 cited

Observation of e+e- to K+K-J/psi via Initial State Radiation at Belle

C. Z. Yuan, Belle Collaboration

The process e+e- to K+K-J/psi is observed for the first time via initial state radiation. The cross section of e+e- to K+K-J/psi for center-of-mass energies between threshold and 6…

hep-ex2007★ 56 cited

Measurement of B(Ds -> munu)

Belle Collaboration, L. Widhalm

We present a measurement of the branching fraction $B (D_{s}^{+} \to μ^{+} ν_{μ})$ using a 548 fb $^{- 1}$ data sample collected by the Belle experiment at the KEKB $e^{+} e^{-}$ collider. The $D_{s}$ …

hep-ex2007★ 183 cited

Search for new charmonium states in the processes e+ e- --> J/psi D() D() at sqrt{s} ~ 10.6 GeV

Belle Collaboration, K. Abe

We present a study of the X(3940) state in the process e+e- -> J/psi D* Dbar. The X(3940) mass and width are measured to be (3942 +7 -6 +- 6)MeV/c^2 and Gamma=(37 + 26 - 15 +- 8 Me…

hep-ex2007★ 83 cited

Observation of $ψ (4415) \to D D ˉ_{2}^{*} (2460)$ decay using initial-state radiation

Belle Collaboration, G. Pakhlova

We report the first observation of the $ψ (4415)$ resonance in the reaction $\e^+e^-\to D^0 D^-π^+$ and a measurement of its cross section in the center-of-mass energy range $4.0\ma…

hep-ex2007★ 9 cited

Measurements of time-dependent CP violation in B^0 -> psi(2S) K_S decays

H. Sahoo, T. E. Browder, K. Trabelsi

We report improved measurements of time-dependent CP violation parameters for B^0(\bar{B}^0) -> psi(2S) K_S. This analysis is based on a data sample of 657x10^6 BBbar pairs collect…

hep-ex2007★ 550 cited

Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays

Belle Collaboration, S. -K. Choi, S. L. Olsen

A distinct peak is observed in the pi^+/- psi' invariant mass distribution near 4.43 GeV in B->K pi^+/- psi' decays. A fit using a Breit Wigner resonance shape yields a peak mass a…

hep-ex2007★ 9 cited

Search for \bar{B}^0\toΛ_c^+\barΛ_c^- decay at Belle

The Belle Collaboration, K. Abe

We search for the doubly charmed baryonic decay $B ˉ^{0} \to Λ_{c}^{+} Λ ˉ_{c}^{-}$ , in a data sample of $520 \times 1 0^{6}$ $B B ˉ$ events accumulated at the $Υ (4 S)$ resonance with the B…

hep-ex2007★ 19 cited

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

S. E. Lee, K. Miyabayashi

We report improved measurements of time-dependent CP violation parameters for $B^{0} (B ˉ^{0}) \to J / ψ π^{0}$ decay. This analysis is based on 535 million $B B ˉ$ pairs accumulated…

hep-ex2007★ 136 cited

Measurement of the near-threshold $e^{+} e^{-} \to D D ˉ$ cross section using initial-state radiation

Belle Collaboration, G. Pakhlova

We report measurements of the exclusive cross section for $e^{+} e^{-} \to D D ˉ$ , where $D = D^{0}$ or $D^{+}$ , in the center-of-mass energy range from the $D D ˉ$ threshold to $5\ma…

hep-ex2007

Search for the CP-violating decays $Υ (4 S) B 0 B ˉ 0 J / K 0_{S} + J / ψ (η_{c}) K 0_{S}$

O. Tajima, M Hazumi

We report the first search for CP violating decays of the $Υ (4 S)$ using a data sample that contains 535 million $Υ (4 S)$ mesons with the Belle detector at the KEKB asymmetric-energy…

hep-ex2007★ 398 cited

Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle

X. L. Wang, Belle Collaboration

The cross section for e+e- to pi+ pi- psi(2S) between threshold and \sqrt{s}=5.5 GeV is measured using 673 fb^{-1} of data on and off the Υ(4S) resonance collected with the Belle d…

hep-ex2007★ 154 cited

Observation of a new D_sJ meson in B+->D0BD0K+ decays

J. Brodzicka, H. Palka

We report the observation of a new $D_{s J}$ meson produced in $B^{+} \to D ˉ^{0} D_{s J} \to D ˉ^{0} D^{0} K^{+}$ . This state has a mass of $M=2708 \pm 9 ^{+11}_{-10} \rm{Me…

hep-ex2007★ 390 cited

Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle

Belle Collaboration, C. Z. Yuan

The cross section for e^+e^- to pi^+pi^-J/psi between 3.8 and 5.5 GeV/c^2 is measured using a 548 fb^{-1} data sample collected on or near the Upsilon(4S) resonance with the Belle…

hep-ex2007★ 60 cited

Search for B -> h(*) nu nubar Decays at Belle

K. -F. Chen

We present a search for the rare decays B -> h(*) nu nubar, where h(*) stands for a light meson. A data sample of 535 million BBbar pairs collected with the Belle detector at the K…

hep-ex2007★ 131 cited

Study of tau- -> K_S pi- nu_tau decay at Belle

Belle Collaboration

We present a study of the decay tau- -> K_S pi- nu_tau using a 351 fb^-1 data sample collected with the Belle detector. The analysis is based on 53110 lepton-tagged signal events.…

hep-ex2007★ 127 cited

Observation of B^0 \to D^{*-} τ^+ ν_τ decay at Belle

A. Matyja, M. Rozanska

We report an observation of the decay $B^{0} \to D^{*-} τ^{+} ν_{τ}$ in a data sample containing $535 \times 1 0^{6}$ $B B ˉ$ pairs collected with the Belle detector at the KEKB asymmetric-…