S. Vahsen

activity

19992026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 8.2k across the 254 of their papers we have counts for

collaborators

Showing 2014Show all

10 papers · 1 filter

physics.ins-det2014★ 19 cited

Absolute Position Measurement in a Gas Time Projection Chamber via Transverse Diffusion of Drift Charge

P. M. Lewis, S. E. Vahsen, M. T. Hedges +3

Time Projection Chambers (TPCs) with charge readout via micro pattern gaseous detectors can provide detailed measurements of charge density distributions. We here report on measure…

hep-ex2014★ 11 cited

First background-free limit from a directional dark matter experiment: results from a fully fiducialised DRIFT detector

J. B. R. Battat, J. Brack, E. Daw +28

The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities…

hep-ex2014

Measurement of the branching fraction of $B^{+} \to τ^{+} ν_{τ}$ decays with the semileptonic tagging method and the full Belle data sample

Belle Collaboration, A. Abdesselam, I. Adachi +392

We report a measurement of the branching fraction of $B^{+} \to τ^{+} ν_{τ}$ decays using a data sample of $772 \times 1 0^{6} B B ˉ$ pairs, collected at the $Υ (4 S)$ resonance with the…

hep-ex2014★ 53 cited

Observation of $e^{+} e^{-} \to π^{+} π^{-} π^{0} χ_{b J}$ and search for $X_{b} \to ω Υ (1 S)$ at $s \sim 10.867$ GeV

Belle Collaboration, X. H. He, C. P. Shen +158

The $e^{+} e^{-} \to π^{+} π^{-} π^{0} χ_{b J}$ ( $J = 0, 1, 2$ ) processes are studied using a 118~fb $^{- 1}$ data sample collected at a center-of-mass energy of 10.867 GeV, in the $Υ (10860)$ ener…

hep-ex2014★ 9 cited

Evidence of $Υ (1 S) \to J / ψ + χ_{c 1}$ and search for double-charmonium production in $Υ (1 S)$ and $Υ (2 S)$ decays

Belle Collaboration, S. D. Yang, C. P. Shen +155

Using data samples of $102 \times 1 0^{6}$ $Υ (1 S)$ and $158 \times 1 0^{6}$ $Υ (2 S)$ events collected with the Belle detector, a first experimental search has been made for double-charmonium…

hep-ex2014★ 11 cited

Measurement of Time-Dependent $C P$ Violation in $B^{0} \to η^{'} K^{0}$ Decays

Belle Collaboration, L. Šantelj, Y. Yusa +163

We present a measurement of the time-dependent $C P$ violation parameters in $B^{0} \to η^{'} K^{0}$ decays. The measurement is based on the full data sample containing $772 \times 1 0^{6}$ $B\ba…

physics.ins-det2014★ 27 cited

3-D Tracking of Nuclear Recoils in a Miniature Time Projection Chamber

S. E. Vahsen, M. T. Hedges, I. Jaegle +6

The three-dimensional (3-D) reconstruction of nuclear recoils is of interest for directional detection of fast neutrons and for direction-sensitive searches for weakly interacting…

hep-ex2014★ 25 cited

Search for CP violation in D^0 -> pi^0 pi^0 decays

N. K. Nisar, K. Trabelsi, G. B. Mohanty +161

We search for CP violation in neutral charm meson decays using a data sample with an integrated luminosity of 966 fb^-1 collected with the Belle detector at the KEKB e+e- asymmetri…

hep-ex2014★ 16 cited

Measurement of the Lepton Forward-Backward Asymmetry in $B \to X_{s} ℓ^{+} ℓ^{-}$ Decays with a Sum of Exclusive Modes

Y. Sato, A. Ishikawa, H. Yamamoto +173

We report the first measurement of the lepton forward-backward asymmetry $A_{FB}$ as a function of the squared four-momentum of the dilepton system, $q^{2}$ , for the elect…

hep-ex2014★ 30 cited

Observation of $D^{0} - D ˉ^{0}$ Mixing in $e^{+} e^{-}$ Collisions

B. R. Ko, E. Won, I. Adachi +164

We observe $D^{0} - D ˉ^{0}$ mixing in the decay $D^{0} \to K^{+} π^{-}$ using a data sample of integrated luminosity 976 fb $^{- 1}$ collected with the Belle detector at the KEKB $e^+…

Absolute Position Measurement in a Gas Time Projection Chamber via Transverse Diffusion of Drift Charge

First background-free limit from a directional dark matter experiment: results from a fully fiducialised DRIFT detector

Measurement of the branching fraction of B+→τ+ντ​ decays with the semileptonic tagging method and the full Belle data sample

Observation of e+e−→π+π−π0χbJ​ and search for Xb​→ωΥ(1S) at s​∼10.867 GeV

Evidence of Υ(1S)→J/ψ+χc1​ and search for double-charmonium production in Υ(1S) and Υ(2S) decays

Measurement of Time-Dependent CP Violation in B0→η′K0 Decays