![]() The scattered electrons were detected in the BigBite spectrometer with associated detectors while the hadrons were detected with the LHRS which had excellent particle identification capabilities. It also collected inclusive hadron (pion, kaon and proton) production data parasitically. The experiment measured target single spin asymmetries (SSA) and beam-target double-pin asymmetries (DSA) in semi-inclusive deep-inelastic scattering (SIDIS) and in deep-inelastic scattering (DIS) processes. The experiment E06-010 ("Transversity Experiment") at JLab Hall A is the first measurement of the transverse spin structure of the neutron using a transversely polarized 3He target and a 5.89 GeV incident electron beam. Another spectrometer, the BigBite spectrometer, can be installed on request by certain experiments. Hall A consists of two standard high-resolution spectrometers (HRS): left HRS (LHRS) and right HRS (RHRS). The accelerator can provide a continuous electron beam (2 ns beam bunch) with high polarization (up to ~ 90%) and high current (up to ~ 200μA) for fixed target experiments in all experimental halls. It is equipped with the continuous electron beam accelerator facility (CEBAF) and four experimental halls: A, B, C and D. Jefferson Lab (JLab) is located at Newport News, VA, US. #EXPERIMENTS ER STATISTICAL CALCULATIONS FULL#Recently, when the pioneer work revealed the significant role that transverse spin plays in understanding the full structure of the nucleon more » and in understanding the dynamics of the strong interaction, the study of the transverse spin structure became the new focus of the worldwide effort. However, this effort has been focused mainly on the nucleon's longitudinal spin structure. The so-called "spin crisis" in the 1980s revealed the limitation of naive quark-parton models and led to a worldwide effort to study the nucleon spin structure. Experimental study of the nucleon spin structure has provided us with many exciting and often surprising results. Spin-dependent observables are a powerful tool to probe the internal structure of the nucleon and to study the dynamics of the strong interaction. This work is aimed at improving our understanding of the pion-nucleon interaction, of the pion-nucleus interaction mechanism, and of nuclear structure. The PIBETA experiment was carried out using a low energy pion beam at the Paul Scherrer Institute in Villigen, more » Switzerland. The first three, labeled JLab, were experiments made with the CLAS detector at the Thomas Jefferson Laboratory in Newport News, VA. A precise measurement of the branching ratio for pion beta decay was carried out along with other members of the PIBETA collaboration (PSI). Contributions to the PRIMEX experiment (JLab). Measurement of proton and deuteron spin structure functions in and above the nucleon resonance region at low and moderate $$Q^2$$, using inclusive electron-proton and electron deuteron scattering (JLAB). Electro-production of excited states of the nucleon through the analysis of exclusive single pion production reactions induced by polarized electrons incident on both polarized and unpolarized nucleon targets. Our work during this period involved the following: 1. This report largely consists of a summary of the technical activities carried out during last 2-1/2 years of the project, along with a list of papers published in the period from 2002-2005. Along with our publications, these reports provide a detailed record of our accomplishments. Yearly Progress Reports were submitted throughout the duration of the project. ![]()
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