M Kornicer

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e^{+}e^{-}→ππX, based on a data set of 62  pb^{-1} at the center-of-mass energy of 3.65 GeV collected with the BESIII detector. These asymmetries can be attributed to the Collins fragmentation function. We observe a nonzero asymmetry, which increases with(More)
a r t i c l e i n f o a b s t r a c t We extract the e + e − → π + π − cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb −1 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is(More)
Using 1.09×10^{9} J/ψ events collected by the BESIII experiment in 2012, we study the J/ψ→γη^{'}π^{+}π^{-} process and observe a significant abrupt change in the slope of the η^{'}π^{+}π^{-} invariant mass distribution at the proton-antiproton (pp[over ¯]) mass threshold. We use two models to characterize the η^{'}π^{+}π^{-} line shape around 1.85 (More)
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of sqrt[s]=4.23, 4.26, and 4.36 GeV, we observe e(+)e(-)→π(0)π(0)hc for the first time. The Born cross sections are measured and found to be about half of those of e(+)e(-)→π(+)π(-)hc within less than 2σ. In the π(0)hc mass spectrum,(More)
Using (9.32, 5.88) million Çð2S; 3SÞ decays taken with the CLEO III detector, we obtain five product branching fractions for the exclusive processes Çð2SÞ ! b0;1;2 ð1PÞ ! Çð1SÞ and Çð3SÞ ! b1;2 ð1PÞ ! Çð1SÞ. We observe the transition b0 ð1PÞ ! Çð1SÞ for the first time. Using the known branching fractions for B½Çð2SÞ ! bJ ð1Pފ, we extract values for B½ bJ(More)
  • 1