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 2004 · hep-exShow all

37 papers · 2 filters

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★ 16 cited

Measurements of Branching Fractions and CP Asymmetries in B-> etah Decays

Paoti Chang

We report measurements of B to pseudoscalar-pseudoscalar decays with at least one eta meson in the final state using 140 fb^{-1} of data collected by the Belle detector at KEKB e^+…

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★ 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★ 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★ 8 cited

Measurement of masses and branching ratios of $Ξ_{c}^{+}$ and $Ξ_{c}^{0}$ baryons

T. Lesiak

We report a measurement of the $Ξ_{c}^{+}$ and $Ξ_{c}^{0}$ baryon masses, and the branching ratios for various $Ξ_{c}$ decays, using $140 fb^{- 1}$ of data collected by the Belle exp…

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★ 8 cited

Observation of $B^{0} \to D^{-} (5 π)^{+}$ , $B^{+} \to D^{-} (4 π)^{++}$ and $B^{+} \to D ˉ^{* 0} (5 π)^{+}$

G. Majumder

We report the first observation of a number of decay modes of the B meson, namely $B^{0} \to D^{*-} (5 π)^{+}$ , $B^{+} \to D^{*-} (4 π)^{++}$ and $B^{+} \to D ˉ^{* 0} (5 π)^{+}$ , where $(nπ)…

hep-ex2004★ 31 cited

Study of decay mechanisms in B- -> Lambda_c+ pbar pi- decay and observation of low mass structure in the (Lambda_c+ pbar) system

The Belle Collaboration, N. Gabyshev

Using a sample of 152 million BBbar pairs accumulated with the Belle detector at the KEKB e+e- collider, we perform a Dalitz plot analysis of the three-body charmed decay B- -> Lam…

hep-ex2004★ 44 cited

Measurements of Branching Fractions and Polarization in B > K^* rho Decays

K. Abe

We present results of a study of the charmless vector-vector decays B^0 -> K^{*0} rho^0 and B^+ ->K^{*0} rho^+. The results are based on a 140 fb^{-1} data sample collected by the…

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★ 16 cited

Search for $B^{0} \to p p ˉ$ , $Λ Λ ˉ$ and $B^{+} \to p Λ ˉ$ at Belle

M. -C. Chang

We report results of a search for the charmless two-body baryonic decays B^0 \to p \bar{p}, B^0 \to Λ\barΛ, and B^+\to p \barΛ based on the analysis of a 140 fb^{-1} data sample. W…

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★ 83 cited

Improved Measurement of CP-Violation Parameters sin(2phi1) and |lambda|, B Meson Lifetimes, and B0-B0bar Mixing Parameter Delta m_d

The Belle Collaboration, K. Abe

We present a precise measurement of the standard model CP-violation parameter sin(2phi1), the direct CP violation parameter |lambda|, the lifetimes of charged and neutral B mesons…

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★ 44 cited

Observation of B0->pi0pi0

Y. Chao

We report the first observation of the decay B0->pi0pi0, using a 253/fb data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e- collider. The me…

hep-ex2004★ 18 cited

Search for CP violation in the decay B0->D*+-D-+

T. Aushev

We report a search for CP-violating asymmetry in B0 -> D*+- D-+ decays. The analysis employs two methods of B0 reconstruction: full and partial. In the full reconstruction method a…

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