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Measurement E195M144

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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: [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 : 0.9 — 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 -0.75754 0.33275 0.12196
1.8 -0.95548 0.1388 0.06735
1.88 -0.31996 0.12777 0.05986
1.96 -0.57501 0.14854 0.07248
2.04 -0.1579 0.15881 0.0744
2.12 -0.46367 0.16973 0.07502
2.2 -0.45102 0.17808 0.07894
2.28 -0.50616 0.18025 0.07229
2.36 -0.27876 0.18326 0.07005