CLAS Physics Database

Measurement E63M4

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Experiment: , 0

Spokespersons: Curtis A. Meyer

Experiment comment: The data were obtained using real photons produced via bremsstrahlung from a 4.023-GeV electron beam

Measurement comment: Spin density matrix element ρ⁰₀₀ in the Adair frame for the charged-mode (no Λ^* cuts) topology

Publication:

• B.Dey, C.A.Meyer, M.Bellis, M.Williams, and CLAS Collaboration Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction γp -> φp // arXiv:1403.2110v2 [nucl-ex]

Quantity measured: ρ⁰_0,0, dimensionless
Spin density matrix element.
Beam: γ, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: φ p, polarization: none

Select data slice: W = 1.985 1.995 2.005 2.015 2.025 2.035 2.045 2.055 2.065 2.075 2.085 2.095 2.105 2.115 2.125 2.135 2.145 2.155 2.165 2.175 2.185 2.195 2.205 2.215 2.225 2.235 2.245 2.255 2.265 2.275 2.285 2.295 2.305 2.315 2.325 2.335 2.345 2.355 2.365 2.375 2.385 2.395 2.405 2.415 2.425 2.435 2.445 2.455 2.465 2.475 2.485 2.495 2.505 2.515 2.525 2.535 2.545 2.555 2.565 2.575 2.585 2.595 2.605 2.615 2.625 2.635 2.645 2.655 2.665 2.675 2.685 2.695 2.705 2.715 2.725 2.735 2.745 2.755 2.765 2.775 2.785 2.795 2.805 2.815 2.825 2.835 GeV

Observable quantity measured (Y axis): ρ00,0, dimensionless Parameter (X axis): cos(θ), dimensionless

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