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Measurement E195M173

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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′z,
z 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′z,
Plot measurement data

Parameter (X axis): W, GeV

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

Measured data:

W,
GeV
P′z Data errors Systematic errors
1.64 0 0 0
1.72 1 3.00098 0.17862
1.8 -0.49614 0.34209 0.09929
1.88 0.61151 0.29609 0.08881
1.96 1 0.30656 0.09441
2.04 0.14949 0.3821 0.10455
2.12 0.58673 0.43559 0.10423
2.2 -0.66201 0.46228 0.09711
2.28 0.63023 0.53571 0.0905
2.36 -0.90915 0.65137 0.09197