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EG1

Spokespersons
P. Stoler, V. Burkert, R. Minehart
Year
2000
Abstract
An extensive experimental program to measure the spin structure of the nucleons is carried out in Hall B with the CLAS detector at Jefferson Lab using a polarized electron beam incident on a polarized target. Spin degrees of freedom offer the possibility to test, in an independent way, existing models of resonance electroproduction. The most accessible resonance is the Delta(1232) since it does not overlap with other states and decays strongly via pi emission. The present analysis selects the Delta(1232) and the higher W region in the exclusive channel vec p(vec e,e',p)pi0 from data taken in 2000-2001, to extract single and double asymmetries in a Q2 range from 0.2 to 0.75 GeV2. Results of the asymmetries will be presented as a function of the center of mass decay angles of the pi0.
Publication
  1. under preparation //
Quantities
Abt(θπ, φπ)   At(θπ, φπ)

Measurements

ID Quantity Beam Target Final state Q2min,
GeV2 		Q2max,
GeV2 		Wmin,
GeV 		Wmax,
GeV
E11M1 Abt(θπ, φπ) e p π0p 0.223 0.379 1.1 1.15
E11M2 Abt(θπ, φπ) e p π0p 0.223 0.379 1.15 1.2
E11M3 Abt(θπ, φπ) e p π0p 0.223 0.379 1.2 1.25
E11M4 Abt(θπ, φπ) e p π0p 0.223 0.379 1.25 1.3
E11M5 Abt(θπ, φπ) e p π0p 0.223 0.379 1.3 1.4
E11M6 Abt(θπ, φπ) e p π0p 0.223 0.379 1.4 1.5
E11M7 Abt(θπ, φπ) e p π0p 0.223 0.379 1.5 1.6
E11M8 Abt(θπ, φπ) e p π0p 0.379 0.54 1.1 1.15
E11M9 Abt(θπ, φπ) e p π0p 0.379 0.54 1.15 1.2
E11M10 Abt(θπ, φπ) e p π0p 0.379 0.54 1.2 1.25
E11M11 Abt(θπ, φπ) e p π0p 0.379 0.54 1.25 1.3
E11M12 Abt(θπ, φπ) e p π0p 0.379 0.54 1.3 1.4
E11M13 Abt(θπ, φπ) e p π0p 0.379 0.54 1.4 1.5
E11M14 Abt(θπ, φπ) e p π0p 0.379 0.54 1.5 1.6
E11M15 Abt(θπ, φπ) e p π0p 0.54 0.77 1.1 1.15
E11M16 Abt(θπ, φπ) e p π0p 0.54 0.77 1.15 1.2
E11M17 Abt(θπ, φπ) e p π0p 0.54 0.77 1.2 1.25
E11M18 Abt(θπ, φπ) e p π0p 0.54 0.77 1.25 1.3
E11M19 Abt(θπ, φπ) e p π0p 0.54 0.77 1.3 1.4
E11M20 Abt(θπ, φπ) e p π0p 0.54 0.77 1.4 1.5
E11M21 Abt(θπ, φπ) e p π0p 0.54 0.77 1.5 1.6
E11M22 At(θπ, φπ) e p π0p 0.223 0.379 1.1 1.15
E11M23 At(θπ, φπ) e p π0p 0.223 0.379 1.15 1.2
E11M24 At(θπ, φπ) e p π0p 0.223 0.379 1.2 1.25
E11M25 At(θπ, φπ) e p π0p 0.223 0.379 1.25 1.3
E11M26 At(θπ, φπ) e p π0p 0.223 0.379 1.3 1.4
E11M27 At(θπ, φπ) e p π0p 0.223 0.379 1.4 1.5
E11M28 At(θπ, φπ) e p π0p 0.223 0.379 1.5 1.6
E11M29 At(θπ, φπ) e p π0p 0.379 0.54 1.1 1.15
E11M30 At(θπ, φπ) e p π0p 0.379 0.54 1.15 1.2
E11M31 At(θπ, φπ) e p π0p 0.379 0.54 1.2 1.25
E11M32 At(θπ, φπ) e p π0p 0.379 0.54 1.25 1.3
E11M33 At(θπ, φπ) e p π0p 0.379 0.54 1.3 1.4
E11M34 At(θπ, φπ) e p π0p 0.379 0.54 1.4 1.5
E11M35 At(θπ, φπ) e p π0p 0.379 0.54 1.5 1.6
E11M36 At(θπ, φπ) e p π0p 0.54 0.77 1.1 1.15
E11M37 At(θπ, φπ) e p π0p 0.54 0.77 1.15 1.2
E11M38 At(θπ, φπ) e p π0p 0.54 0.77 1.2 1.25
E11M39 At(θπ, φπ) e p π0p 0.54 0.77 1.25 1.3
E11M40 At(θπ, φπ) e p π0p 0.54 0.77 1.3 1.4
E11M41 At(θπ, φπ) e p π0p 0.54 0.77 1.4 1.5
E11M42 At(θπ, φπ) e p π0p 0.54 0.77 1.5 1.6
Created in SINP MSU, CLAS Collaboration