Skip to Main content Skip to Navigation
Reports

Measurements of the electron-helicity dependent cross sections of deeply virtual compton scattering with CEBAF at 12 GeV

Abstract : We propose precision measurements of the helicity-dependent and helicity independent cross sections for the ep->epg reaction in Deeply Virtual Compton Scattering (DVCS) kinematics. DVCS scaling is obtained in the limits Q^2>>Lambda_{QCD}^2, x_Bj fixed, and -\Delta^2=-(q-q')^2<2 GeV^2, W>2 GeV, and -\Delta^21 GeV^2. We will use our successful technique from the 5.75 GeV Hall A DVCS experiment (E00-110). With polarized 6.6, 8.8, and 11 GeV beams incident on the liquid hydrogen target, we will detect the scattered electron in the Hall A HRS-L spectrometer (maximum central momentum 4.3 GeV/c) and the emitted photon in a slightly expanded PbF_2 calorimeter. In general, we will not detect the recoil proton. The H(e,e'g)X missing mass resolution is sufficient to isolate the exclusive channel with 3% systematic precision.
Document type :
Reports
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00101676
Contributor : Jeanine Pellet <>
Submitted on : Wednesday, September 27, 2006 - 5:51:02 PM
Last modification on : Monday, July 20, 2020 - 9:18:10 AM

Links full text

Identifiers

Collections

Citation

J. Roche, C. E. Hyde-Wright, B. Michel, C. Muñoz Camacho, G. Gavalian, et al.. Measurements of the electron-helicity dependent cross sections of deeply virtual compton scattering with CEBAF at 12 GeV. 2006, 43 p. ⟨in2p3-00101676⟩

Share

Metrics

Record views

216