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Measurement E195M128

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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′x,
x 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′x,
Plot measurement data

Parameter (X axis): W, GeV

Click here to get data in text file, delimited with tabs.

Measured data:

W,
GeV
P′x Data errors Systematic errors
1.64 0 0 0
1.72 0.40574 0.30812 0.12196
1.8 -0.00223 0.12471 0.06735
1.88 0.09099 0.11601 0.05986
1.96 -0.04322 0.133 0.07248
2.04 -0.00625 0.14335 0.0744
2.12 0.42244 0.15683 0.07502
2.2 0.18479 0.1642 0.07894
2.28 0.02646 0.1663 0.07229
2.36 0.3631 0.17076 0.07005