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Measurement E209M87

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Experiment: CLAS12 RG-K K+Y recoil polarization, 2025

Spokespersons: Daniel S. Carman

Measurement comment: cos(θKc.m.) bin: [0.0: 0.5]

Publication:

Quantity measured: P0y,
y projection of recoil polarization P0; 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 : 1.625 — 2.4 GeV
Ebeam : 7.546 GeV

Observable quantity measured (Y axis): P0y,
Plot measurement data

Parameter (X axis): W, GeV

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

Measured data:

W,
GeV
P0y Data errors Systematic errors
1.72 0.8847 2.3026 0.0723
1.8 0.2753 0.259 0.0716
1.88 -0.8841 0.1985 0.0723
1.96 -0.5805 0.254 0.0718
2.04 -0.0903 0.383 0.0715
2.12 -0.0582 0.4573 0.0715
2.2 -0.0113 0.4919 0.0715
2.28 -0.5205 0.5713 0.0718
2.36 0.195 0.6575 0.0715