Charged pion form factor between Q{sup 2}=0.60 and 2.45 GeV{sup 2}. I. Measurements of the cross section for the {sup 1}H(e,e{sup '}{pi}{sup +})n reaction
- Dept. of Physics, VU university, NL-1081 HV Amsterdam (Netherlands)
- University of Maryland, College Park, Maryland 20742 (United States)
- University of Regina, Regina, Saskatchewan S4S 0A2 (Canada)
- Physics Division, TJNAF, Newport News, Virginia 23606 (United States)
Cross sections for the reaction {sup 1}H(e,e{sup '}{pi}{sup +})n were measured in Hall C at Thomas Jefferson National Accelerator Facility (JLab) using the high-intensity Continuous Electron Beam Accelerator Facility (CEBAF) to determine the charged pion form factor. Data were taken for central four-momentum transfers ranging from Q{sup 2}=0.60 to 2.45 GeV{sup 2} at an invariant mass of the virtual photon-nucleon system of W=1.95 and 2.22 GeV. The measured cross sections were separated into the four structure functions {sigma}{sub L},{sigma}{sub T},{sigma}{sub LT}, and {sigma}{sub TT}. The various parts of the experimental setup and the analysis steps are described in detail, including the calibrations and systematic studies, which were needed to obtain high-precision results. The different types of systematic uncertainties are also discussed. The results for the separated cross sections as a function of the Mandelstam variable t at the different values of Q{sup 2} are presented. Some global features of the data are discussed, and the data are compared with the results of some model calculations for the reaction {sup 1}H(e,e{sup '}{pi}{sup +})n.
- OSTI ID:
- 21192340
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 78, Issue 4; Other Information: DOI: 10.1103/PhysRevC.78.045202; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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