Photoproduction of mesons off the deuteron: quasifree and coherent processes

摘要：

Photoproduction of mesons off the deuteron has been investigated at a tagged photon beam of the Bonn ELSA accelerator with the combined Crystal Barrel-TAPS electromagnetic calorimeter for incident photon energies up to 2.5 GeV. The mesons have been detected in coincidence with recoil protons, neutrons and deuterons. This allow the measurement of meson production reactions off the quasifree nucleons bound in the deutron, as well as the coherent production off the deuteron. The comparison of quasifree proton reactions to free proton reactions can confirm or invalidate possible nuclear effects on the extracted cross section reactions. Furthermore the isospin composition of a resonance can be estimated from the comparison of quasifree proton and neutron reactions. The quasifree photoproduction of the η and π~°η mesons off nucleons and the coherent photoproduction of π~°η-pairs off the deuteron are discussed.

关键词： quasifree coherent photoproduction η π~0η neutron proton deuteron

作者: I.Jaeglé

作者单位: Departmement of Physics,University of Basel,CH-4056 Bnsel,Switzerland

会议类型: 国际会议

会议名称: The 12th International Workshop on the Physics of Ezcited Nucleon NSTAR2009(2009激发态核子物理研讨会)

会议地点: 北京

会议语种:英文

页码: 1340-1344

在线出版日期: 2009-04-19（万方平台首次上网日期，不代表论文的发表时间）