A CLAS act?

CLAS NOTE March Photon Flux Normalisation for CLAS

The rst part of this note describes in a general way the problem of the normalisation of a photon experiment Then a standard procedure will be described together with some results that show that it can be used and deal properly with the prescale scheme used in g and with E T coincidence been turned ON or OFF Further electronical problems that happended during g and g are discussed in the third ...

Using The CLAS Detector

Two charged pion final states are studied for photons incident on protons. The data come from Thomas Jefferson National Accelerator Facility using the CLAS detector. A tagged photon beam of 0.5-2.4 GeV/c was produced through bremsstrahlung radiation and was incident on a lH2 target. This analysis looks at the reaction γ p → pπ+π− using a partial wave analyis to identify intermediate baryon reso...

For the Clas Collaboration

Pion Electroproduction Using Clas

Measurements of the p(e;e p)πo reaction in the ∆(1232) resonance region have been performed with the CLAS detector at Jefferson Lab using beam energies of 1.645 and 2.445 GeV. Cross sections were measured over a range of four-momentum transfer Q2= 0.4-1.8 (GeV/c)2. Decay angular distributions in the πo p center-of-mass were obtained with full coverage in cosθ π and φ π. This permits the extract...

DVCS with CLAS

Generalized parton distributions provide a unifying framework for the interpretation of exclusive reactions at high Q2. The most promising reaction for the investigation of these distributions is the hard production of photons using Deeply Virtual Compton Scattering (DVCS). This reaction can be accessed experimentally by determining the production asymmetry using polarized electrons on a proton...