H. Yamamoto

activity

19942013

most citedMeasurements of the Meson-Photon Transition Form Factors of Light Pseudoscalar Mesons at Large Momentum Transfer

505 citations · 2.4k across the 51 of their papers we have counts for

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44 papers · 1 filter

hep-ex2013★ 96 cited

Measurement of the Branching Fraction Br(Lambda_c+ -> p K- pi+)

A. Zupanc, C. Bartel, N. Gabyshev +184

We present the first model-independent measurement of the absolute branching fraction of the Lambda_c+ -> p K- pi+ decay using a data sample of 978 fb^-1 collected with the Belle d…

hep-ex2009★ 8 cited

Measurement of cross sections of exclusive $e^{+} e^{-} \to V P$ processes at $s = 10.58$ GeV

K. Belous, M. Shapkin

The cross sections for the reactions $e^{+} e^{-} \to ϕ η, ϕ η^{'}, ρ η, ρ η^{'}$ have been measured using a data sample of 516 fb $^{- 1}$ collected with the Belle detector at th…

hep-ex2008★ 27 cited

Measurement of the Moments of the Photon Energy Spectrum in B -> X_s gamma Decays and Determination of |V_cb| and m_b at Belle

Belle Collaboration, C. Schwanda, P. Urquijo +2

Using the previous Belle measurement of the inclusive photon energy in $B \to X_{s} γ$ decays, we determine the first and second moments of this spectrum for minimum photon energies in…

hep-ex2008★ 32 cited

Improved search for D^0 mixing using semileptonic decays at Belle

BELLE Collaboration, U. Bitenc

A search for mixing in the neutral D meson system has been performed using semileptonic D0 -> K(*)- e+ νand D0 -> K(*)- μ+ νdecays. Neutral D mesons from D*+ -> D0 π_s^+ decays are…

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-ex2005★ 44 cited

Measurement of |V_ub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays

The Belle Collaboration, A. Limosani

We report measurements of partial branching fractions of inclusive charmless semileptonic $B$ -meson decays at the endpoint of the electron momentum spectrum. The measurements are m…

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★ 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-ex2003★ 52 cited

Measurement of branching fraction ratios and CP asymmetries in $B^{\pm} \to D_{C P} K^{\pm}$

S. K. Swain, T. E. Browder

We report results on the decay $B^{-} \to D_{C P} K^{-}$ and its charge conjugate using a data sample of 85.4 million $B B ˉ$ pairs recorded at the $Υ (4 S)$ resonance with the Bell…

hep-ex2003★ 46 cited

Evidence for CP-Violating Asymmetries in B0->pi+pi- Decays and Constraints on the CKM Angle phi2

Belle Collaboration, K. Abe

We present an improved measurement of CP-violating asymmetries in B0 -> pi+ pi- decays based on a 78 fb^-1 data sample collected at the Y(4S) resonance with the Belle detector at t…

hep-ex2002★ 211 cited

Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System

The Belle Collaboration, K. Abe

We present an improved measurement of the standard model CP violation parameter sin2phi_1 (also known as sin2beta) based on a sample of 85 times 10^6 B Bbar pairs collected at the…

hep-ex2002★ 20 cited

Precise Measurement of B Meson Lifetimes with Hadronic Decay Final States

Belle collaboration, K. Abe

The lifetimes of the B0bar and B- mesons are extracted from 29.1/fb of data collected with the Belle detector at the KEK B-factory. A fit to the decay length differences of neutral…

hep-ex2002★ 14 cited

Observation of chi_c2 Production in B-meson Decay

Belle Collaboration

We report the first observation of chi_c2 production in B-meson decays. We find an inclusive B -> chi_c2 X branching fraction of (1.80^{+0.23}_{-0.28}+/- 0.26) 10^-3. The data set,…

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★ 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★ 29 cited

Observation of Cabibbo suppressed $B \to D^{(*)} K^{-}$ decays at Belle

K. Abe

Cabibbo-suppressed decays $B \to D^{(*)} K^{-}$ using a 10.4 fb $^{- 1}$ data sample accumulated at the $Υ (4 S)$ resonance with the Belle detector at the KEKB $e^{+} e^{-}$ storage ring. Th…

hep-ex1998★ 54 cited

Observation of Two Narrow States Decaying into $Ξ_{c}^{+} γ$ and $Ξ_{c}^{0} γ$

C. P. Jessop

We report the first observation of two narrow charmed strange baryons decaying to $Ξ_{c}^{+} γ$ and $Ξ_{c}^{0} γ$ , respectively, using data from the CLEO II detector at CESR. We interpret th…

hep-ex1998★ 17 cited

First Observation of $Υ (1 S) \to γ π π$

A. Anastassov

We report on a study of exclusive radiative decays of the Upsilon(1S) resonance collected with the CLEO-II detector operating at CESR. We present the first observation of the radia…

hep-ex1998★ 53 cited

Observation of High Momentum $η^{'}$ Production in B Decay

T. E. Browder

We report the first observation of $B \to η^{'} X$ transitions with high momentum $η^{'}$ mesons. We observe $39.0 \pm 11.6$ B decay events with $2.0 < p_{η^{'}} < 2.7$ GeV/c, the high momentu…

hep-ex1998★ 33 cited

First Observation of the Cabibbo Suppressed Decay $B^{+} \to D ˉ^{0} K^{+}$

M. Athanas

We have observed the decay of the $B^{-}$ meson into $D^{0} K^{-}$ , using 3.3 million $B B ˉ$ pairs collected with the CLEO II detector at the Cornell Electron Storage Ring. We find th…

hep-ex1998★ 26 cited

The Hadronic Transitions $U p s i l o n (2 S) \to U p s i l o n (1 S)$

J. Alexander

Using a data sample of $Υ (2 S)$ events collected with the CLEO II detector at the Cornell Electron Storage Ring, we have investigated the hadronic transitions between the $Υ (2 S)$ an…

hep-ex1998★ 87 cited

Two-Body B Meson Decays to $η$ and $η^{^{'}}$ -- Observation of $B \to η$ {'}K$

CLEO Collaboration, B. Behrens et al

In a sample of 6.6 million produced B mesons we have observed decays B -> eta' K, with branching fractions BR(B+ -> eta' K+ = 6.5 +1.5 -1.4 +- 0.9) x $1 0^{- 5}$ and BR(B0 -> eta' K0…

hep-ex1997★ 31 cited

New Limits for Neutrinoless Tau Decays

CLEO Collaboration, D. Bliss et al

Neutrinoless 3-prong tau lepton decays into a charged lepton and either two charged particles or one neutral meson have been searched for using 4.79 fb^{-1} of data collected with…

hep-ex1997★ 7 cited

Study of Semileptonic Decays of B Mesons to Charmed Baryons

CLEO Collaboration, G. Bonvicini et al

Using data collected by the CLEO II detector at the center-of-mass energy on or near the Upsilon(4S) resonance, we have determined the 90% confidence level upper limit B(Bbar --> L…