K.F. Chen

activity

20022016

most citedObservation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays

2k citations · 3.1k across the 19 of their papers we have counts for

collaborators

20 papers

hep-ex2016★ 103 cited

Angular analysis of $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$

Belle Collaboration, A. Abdesselam, I. Adachi +442

We present a measurement of angular observables, $P_{4}^{'}$ , $P_{5}^{'}$ , $P_{6}^{'}$ , $P_{8}^{'}$ , in the decay $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$ , where $ℓ^{+} ℓ^{-}$ is either $e^{+} e^{-}$ or $μ^+…

hep-ex2016★ 49 cited

Measurement of the branching ratio of $B ˉ^{0} \to D^{+} τ^{-} ν ˉ_{τ}$ relative to $B ˉ^{0} \to D^{+} ℓ^{-} ν ˉ_{ℓ}$ decays with a semileptonic tagging method

A. Abdesselam, I. Adachi, K. Adamczyk +441

We report a measurement of ratio $R (D^{*}) = B (B ˉ^{0} \to D^{*+} τ^{-} ν ˉ_{τ}) / B (B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ})$ , where $ℓ$ denot…

hep-ex2012★ 24 cited

Study of Three-Body Y(10860) Decays

I. Adachi, K. Adamczyk, H. Aihara +337

We report preliminary results on the analysis of the three-body Y(10860)=> B barB pi, Y(10860) => (B barB* + c.c.) pi and Y(10860)=> B* barB* pi decays including an observation of…

hep-ex2012★ 12 cited

Evidence for a Zb0(10610) in Dalitz analysis of Y(5S) -> Y(nS) pi0 pi0

I. Adachi, K. Adamczyk, H. Aihara +331

We report the first observation of Y(5S) -> Y(1,2S) pi0 pi0 decays. Evidence for the Zb0(10610) with 4.9sigma significance is found in a Dalitz plot analysis of Y(5S) -> Y(2S) pi0…

physics.ins-det2010

Belle II Technical Design Report

T. Abe, I. Adachi, K. Adamczyk +407

The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade of KEKB is under constructi…

hep-ex2009★ 10 cited

Measurement of the branching fraction for the decay Upsilon(4S) -> Upsilon(1S)pi+pi-

The Belle Collaboration, A. Sokolov, M. Shapkin

We study transitions between Upsilon states with the emission of charged pions using 604.6/fb of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider.…

Angular analysis of B0→K∗(892)0ℓ+ℓ−