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Measurement E195M174

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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: [-0.5:0.0]

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 : 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 0.78299 0.15977
1.8 0.16911 0.21786 0.07177
1.88 -0.23495 0.18527 0.05584
1.96 -0.08128 0.21583 0.06114
2.04 0.08136 0.31561 0.08178
2.12 -0.90064 0.43147 0.10595
2.2 0.52792 0.50726 0.09189
2.28 0.58055 0.6712 0.09947
2.36 0.43252 0.76826 0.08156