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Measurement E195M157

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Experiment: CLAS12 RG-K, 2022

Spokespersons: Daniel S. Carman

Measurement comment: Coordinate system:
    (x,y,z), z along virtual photon direction, y normal to electron scattering plane, x=y x z
Q2 bin: [1:4.5] GeV^2
cos(θKc.m.) bin: [-1.0:-0.5]

Publication:

Quantity measured: P′x,
x projection of beam-recoil transferred polarization P′ in (x,y,z) system
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: K+ Σ0, polarization: polarized

Q2 : 1 — 4.5 GeV2
W : 1.6 — 2.4 GeV
Ebeam : 7.546 GeV

Observable quantity measured (Y axis): P′x,
Plot measurement data

Parameter (X axis): W, GeV

Click here to get data in text file, delimited with tabs.

Measured data:

W,
GeV
P′x Data errors Systematic errors
1.64 0 0 0
1.72 1 2.8236 0.17862
1.8 -0.70238 0.34205 0.09929
1.88 -0.74583 0.29073 0.08881
1.96 -0.11663 0.30281 0.09441
2.04 -0.00955 0.37261 0.10455
2.12 1 0.42586 0.10423
2.2 -0.64777 0.4564 0.09711
2.28 0.60181 0.50456 0.0905
2.36 0.88461 0.59506 0.09197