32 research outputs found
Parallel integral projection transform for straight electrode localization in 3-D ultrasound images
Measurement of the leptonic decay widths of the phi-meson with the KLOE detector
The phi-meson leptonic widths, Gee and Gmm, are obtained, respectively, from
the e+e- forward-backward asymmetry and the muon cross section around the
phi-mass energy. We find Gee=1.32⊕0.05⊕0.03 kev and sqrt(GeeGmm)=
1.320⊕0.018⊕0.017 kev. These results, compatible with Gee=Gmm,
provide a precise test of lepton universality. Combining the two results gives
G_lept=1.320⊕0.023 kev.Comment: 10 pages and 8 figures to be submitted to Phys.Lett.
Measurement of the branching ratio for the decay with the KLOE detector
A new measurement of the absolute branching ratio BR() with the KLOE detector at the DANE collider is
presented, based on a sample of charged kaons tagged
events, produced in the reaction .The value BR() has been
obtained.Comment: Contributed paper to EPS 2003 and LP 200
The hadronic cross section measurement at KLOE
KLOE uses the radiative return to measure cross section σ(e+e-->π+π-γ) at the electron-positron collider DAΦNE. Divinding by a theoretical radiator function, we obtain the cross section σ(e+e-->π+π-γ) for the mass range 0.35π<0.95GeV2. We calculate the hadronic contribution to the muon anomaly for the given mass range: aμ=388.7+/-0.8stat+/-3.5syst+/-3.5t
Upper limit on the eta -> pi+pi- branching ratio with the KLOE experiment
We have searched with the KLOE detector for the P and CP violating decay eta
-> pi^+pi^- in a sample of 1.55 x 10^7 eta's from the decay phi -> eta gamma of
phi mesons produced in e+e- annihilations at DAFNE. No signal is found. We
obtain the upper limit BR(eta -> pi^+pi^-) < 1.3 x 10^-5 at 90% confidence
level.Comment: 8 pages, 3 figure
Measurement of and extraction of below 1 {\rm GeV} with the KLOE detector
We have measured the cross section at
an energy GeV with the KLOE detector at the electron-positron
collider DANE. From the dependence of the cross section on the invariant
mass of the two-pion system, we extract for the
mass range GeV. From this result, we calculate the pion form
factor and the hadronic contribution to the muon anomaly, .Comment: 20 pages, 12 figure
Comparison of Methods for Tool Localization in Biological Tissue from 3D Ultrasound Data
International audienc
MEASUREMENT OF SIGMA(E+E- --> PI+ PI- GAMMA) AND EXTRACTION OF SIGMA(E+E- --> PI+ PI-) BELOW 1-GEV WITH THE KLOE DETECTOR.
We have measured the cross section sigma(e+e -> pi+ pi- gamma) at an energy W = m_phi=1.02 GeV with the KLOE detector at the electron-positron collider DAFNE. From the dependence of the cross section on the invariant mass of the two-pion system, we extract sigma(e+e- -> pi+pi-) for the mass range 0.35 < s < 0.95 GeV^2. From this result, we calculate the pion form factor and the hadronic contribution to the muon anomaly, a_mu