Physics with diproton final states at ANKE-COSY

Near-threshold pion production in diproton reactions with polarised beams and target at ANKE-COSY

An extensive experimental study of near-threshold pion production in diproton reactions is underway at the ANKE-COSY spectrometer (Jülich). The programme is aimed at isolating the four-nucleon-pion contact interaction term appearing in the χPT expansions of these processes. This will establish links between pion production and other low energy phenomena within the χPT approach. The first step i...

Kaon pair production in proton-proton collisions at COSY-ANKE

The near-threshold production of kaon-pairs has been investigated in protonproton collisions at Cooler Synchrotron (COSY)at Forschungszentrum Jülich. In the pp → ppKK reaction, the invariant mass distributions of Kp, Kpp, and KK indicate the presence of both Kp and KK final state interactions. Total cross sections for pp → ppφ reaction have been determined at excess energies ε of 18.5, 34.5, an...

FEATURING : ALTO • Spin Program at COSY - ANKE Precision Mass Measurements

Physics with tau’s in the final states at CMS

On the eve of LHC start-up, the main opportunities offered to CMS to discover and ultimately study new physics with tau’s in the final states are presented. From the discovery of the Higgs boson in the Standard Model, of its extension in the MSSM or in non-SUSY alternatives to the measurement of SUSY mass spectrum in q̃ → qχ̃2 → qτ τ̃ cascade decays, this talk reviews the most recent analyses deve...

Excited Hyperons Produced in Proton-proton Collisions with Anke at Cosy

Excited neutral hyperons Y 0∗ produced in the pp → pKY 0∗ reaction with a COSY beam momentum of 3.65 MeV/c have masses below 1540 MeV/c. The ANKE spectrometer allows the simultaneous observation of different decay modes: Y 0∗ → πΣ, π∓Σ±, π0Λ,K−p by measuring kaons and pions of either charge in coincidence with protons. We have found indications for a neutral excited hyperon resonance Y 0∗ with ...