Narrow Results

At E_d = 26 MeV, H(d,pp)n cross section was measured at 4 angle pairs corresponding to off-plane star and compared with recent pd calculations. A rotary foil target was developed for this experiment. The present data and previous data revealed dependence of the star anomaly on the star-inclination angle α. The angular dependence at E_p = 13 MeV differs much with that at 9.5 MeV.

We measured D(p, pp)n cross section at E_p = 9.5 MeV and 13 MeV at off-plane star configurations, including the space star where the star is perpendicular to the beam axis. The experimental results were compared with recent pd breakup calculations using screened Coulomb force, and disagreement was found to smoothly vary with an inclination angle of the off-plane star, α. Further systematic experiments are necessary to investigate the star anomaly.

In this conference presentation I discuss CLEO-c opportunities in Dalitz plot analyzes with the data samples available now and projected by the end of CESR-c run. Using 281 pb^-1 of e⁺e^- collisions at mass of ψ(3770) we present results of the Dalitz plot analysis of D⁺ → π^-π⁺π⁺. Using the CLEO-c and CLEO III samples of 5 pb^-1, accrued at mass of ψ(2S), we study three body decays of χ_cJ produced in the radiative decay ψ(2S) → γχ_cJ, where J=0,1,2. A clear signal from at least one of χ_cJ is found in eight final states: π⁺π^-η, π⁺π^-η′, K⁺K^-π⁰, , ηK⁺K^-, , , and . For these modes we measured or set an upper limit on the branching fraction. A Dalitz plot analysis is performed on three modes χ_c1 → π⁺π^-η, K⁺K^-π⁰, and .

The Sudbury Neutrino Observatory (SNO), whose main purpose was to study the neutrinos produced in the Sun, demonstrated that neutrinos can change flavor and, thus, they are massive particles. SNO detected and recorded neutrino and cosmic ray interactions from 1999 to 2006 and several analyses have been completed in the past year using legacy data. We present the results of the most recent ones: the measurements of neutron production in atmospheric neutrino interactions and neutron production by cosmic muons, a search for Lorentz symmetry violation in neutrino oscillations and a search for neutrino decay. A few other analyses are ongoing and we comment about their goal and status.

The first results of the geometry GEANT3 simulation of the three-arm magnetic spectrometer SCAN3 are presented in this article. The possibility of detection of exotic nuclei (such as eta-mesic nucleus) with help of the SCAN3 and the Nuclotron internal target is shown.