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 2001 · hep-exShow all

15 papers · 2 filters

hep-ex2001★ 48 cited

Measurement of Br(Bbar -> D+l-nubar) and Determination of |Vcb|

Belle Collaboration, K. Abe

We present a measurement of the branching fraction for the semileptonic B decay Bbar -> D+l-nubar, where l- can be either an electron or a muon. We find Gamma(Bbar -> D+l-nubar)= (…

hep-ex2001★ 43 cited

Observation of B+ -> chi_c0 K+

Belle Collaboration, K. Abe

Using a sample of $31.3 x 1 0^{6}$ B\bar{B}$ pairs collected with the Belle detector at the Y(4S) resonance, we make the first observation of the charged B meson decay to chi_c0 and a…

hep-ex2001★ 46 cited

Observation of Cabibbo-suppressed and W-exchange Lambda_c^+ baryon decays

Belle Collaboration, K. Abe

We present measurements of the Cabibbo-suppressed decays Lambda_c^+ --> Lambda0 K+ and Lambda_c^+ --> Sigma0 K+ (both first observations), Lambda_c^+ --> Sigma+ K+ pi- (seen with l…

hep-ex2001★ 38 cited

A Measurement of Lifetime Difference in $D^{0}$ Meson Decays

Belle Collaboration, K. Abe

We report a measurement of the $D^{0}$ - $D ˉ^{0}$ mixing parameter $y_{C P}$ using 23.4 fb $^{- 1}$ of data collected near the $Υ$ (4S) resonance with the Belle detector at KEKB. $y_{…

hep-ex2001★ 88 cited

Observation of the Decay $B \to K ℓ^{+} ℓ^{-}$

K. Abe

We report a search for the flavor-changing neutral current decay $B \to K^{(*)} ℓ^{+} ℓ^{-}$ using a 29.1 fb $^{- 1}$ data sample accumulated at the $Υ (4 S)$ resonance with th…

hep-ex2001★ 71 cited

Production of Prompt Charmonia in $e^{+} e^{-}$ Annihilation at $s \approx 10.6$ GeV

K. Abe

The production of prompt $J / ψ$ , $ψ (2 S)$ , $χ_{c 1}$ and $χ_{c 2}$ is studied using a $32.4 f b^{- 1}$ data sample collected with the Belle detector at the $Υ (4 S)$ and 60 MeV below the r…

hep-ex2001★ 47 cited

Observation of Color-suppressed $B ˉ^{0} \to D^{0} π^{0}$ , $D^{* 0} π^{0}$ , $D^{0} η$ , and $D^{0} ω$ Decays

K. Abe, The Belle Collaboration

We report the first observation of color-suppressed $B ˉ^{0} \to D^{0} π^{0}$ , $D^{* 0} π^{0}$ , $D^{0} η$ , and $D^{0} ω$ decays and evidence for $B ˉ^{0} \to D^{* 0} η$ and $D^{*0}ω…

hep-ex2001★ 56 cited

Measurement of the Branching Fraction for B->eta' K and Search for B->eta'pi+

K. Abe

We report measurements for two-body charmless B decays with an eta' meson in the final state. Using 11.1X10^6 BBbar pairs collected with the Belle detector, we find BF(B^+ ->eta'K^…

hep-ex2001★ 625 cited

Observation of Large CP Violation in the Neutral B Meson System

K. Abe, The Belle Collaboration

We present a measurement of the Standard Model CP violation parameter sin 2phi_1 based on a 29.1 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector…

hep-ex2001★ 17 cited

Measurement of $Γ (K_{μ 3}) /Γ (K_{e 3})$ ratio using stopped positive kaons

Keito Horie, KEK-E246 Collaboration

The ratio of the $K^{+} \to π^{0} μ^{+} ν$ ( $K_{μ 3}^{+}$ ) and $K^{+} \to π^{0} e^{+} ν$ ( $K_{e 3}^{+}$ ) decay widths, $Γ (K_{μ 3}) /Γ (K_{e 3})$ , has been measured with stopped positive kaon…

hep-ex2001★ 27 cited

Observation of B->J/psi K1(1270)

K. Abe, Belle Collaboration

We report the first observation of the exclusive decay process B->J/psi K1(1270) using a sample of 11.2M BBbar meson pairs collected in the Belle detector at the KEKB asymmetric e+…

hep-ex2001★ 81 cited

Measurement of Branching Fractions for B->ππ, Kπand KK Decays

K. Abe

We report measurements of the branching fractions for $B^{0} \to π^{+} π^{-}$ , $K^{+} π^{-}$ , $K^{+} K^{-}$ and $K^{0} π^{0}$ , and $B^{+} \to π^{+} π^{0}$ , $K^{+} π^{0}$ , $K^{0} π^{+}$ and $K^{+} K ˉ^{0}$ . The results are…

hep-ex2001★ 266 cited

A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector

The Belle Collaboration, K. Abe

We have measured the branching fraction of the inclusive radiative B meson decay B --> X(s) gamma to be Br(B->X(s)gamma)=(3.36 +/- 0.53(stat) +/- 0.42(sys) +0.50-0.54(th)) x 10^{-4…

hep-ex2001★ 22 cited

Measurement of Inclusive Production of Neutral Pions from Upsilon(4S) Decays

Belle Collaboration, K. Abe

Using the Belle detector operating at the KEKB e+e- storage ring, we have measured the mean multiplicity and the momentum spectrum of neutral pions from the decays of the Upsilon(4…

hep-ex2001★ 118 cited

Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays

A. Abashian

We present a measurement of the Standard Model CP violation parameter sin(2phi_1) based on a 10.5 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector…

Measurement of Br(Bbar -> D+l-nubar) and Determination of |Vcb|

Observation of B+ -> chi_c0 K+

Observation of Cabibbo-suppressed and W-exchange Lambda_c^+ baryon decays

A Measurement of Lifetime Difference in D0 Meson Decays

Observation of the Decay B→Kℓ+ℓ−

Production of Prompt Charmonia in e+e− Annihilation at s​≈10.6 GeV

Observation of Color-suppressed Bˉ0→D0π0, D∗0π0, D0η, and D0ω Decays

Measurement of the Branching Fraction for B->eta' K and Search for B->eta'pi+

Observation of Large CP Violation in the Neutral B Meson System

Measurement of Γ(Kμ3​)/Γ(Ke3​) ratio using stopped positive kaons

Observation of B->J/psi K1(1270)

Measurement of Branching Fractions for B->ππ, Kπand KK Decays

A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector

Measurement of Inclusive Production of Neutral Pions from Upsilon(4S) Decays

Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays

A Measurement of Lifetime Difference in $D^{0}$ Meson Decays

Observation of the Decay $B \to K ℓ^{+} ℓ^{-}$

Production of Prompt Charmonia in $e^{+} e^{-}$ Annihilation at $s \approx 10.6$ GeV

Observation of Color-suppressed $B ˉ^{0} \to D^{0} π^{0}$ , $D^{* 0} π^{0}$ , $D^{0} η$ , and $D^{0} ω$ Decays

Measurement of $Γ (K_{μ 3}) /Γ (K_{e 3})$ ratio using stopped positive kaons