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Measurement E195M140

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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: [0.9:0.3] GeV^2
cos(θKc.m.) bin: [0.5:1.0]

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 : 0.3 — 0.9 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 0.46156 0.09766
1.8 0.12322 0.19676 0.0593
1.88 -0.02765 0.15316 0.04259
1.96 -0.2721 0.1545 0.0474
2.04 0.13328 0.13589 0.04406
2.12 -0.1399 0.12388 0.04311
2.2 -0.20771 0.1132 0.04186
2.28 -0.13469 0.10791 0.04311
2.36 -0.28578 0.10705 0.04643