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Measurement E195M141

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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: [3.5:0.9] 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 : 0.9 — 3.5 GeV2
W : 1.6 — 2.4 GeV
Ebeam : 6.535 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 1.75616 0.18457
1.8 -0.04256 0.23673 0.10368
1.88 -0.36136 0.18545 0.0839
1.96 0.1889 0.203 0.0932
2.04 0.03168 0.25965 0.10729
2.12 -0.58894 0.28203 0.10312
2.2 0.22364 0.31765 0.1036
2.28 0.03993 0.3516 0.10021
2.36 0.00645 0.43735 0.10513