CLAS Physics Database

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
Abtπ, φπ) Atπ, φπ)

Measurements

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