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Measurement E195M176

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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: [0.5:1.0]

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 : 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 0.83891 0.17197
1.8 -0.30773 0.19958 0.08701
1.88 -0.07923 0.17916 0.0659
1.96 -0.65385 0.20396 0.0751
2.04 -0.39659 0.22718 0.0832
2.12 0.05112 0.25833 0.09122
2.2 -0.96099 0.262 0.08515
2.28 0.54294 0.26815 0.08382
2.36 0.09547 0.27541 0.08275