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Measurement E209M85

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

Spokespersons: Daniel S. Carman

Measurement comment: cos(θKc.m.) bin: [-1.0: -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 -0.0443 0.6473 0.0715
1.8 -0.9584 0.6137 0.0724
1.88 -0.3171 0.4509 0.0716
1.96 -0.9573 0.4103 0.0724
2.04 -0.977 0.5354 0.0724
2.12 -0.9587 0.5473 0.0724
2.2 -0.9598 0.4939 0.0724
2.28 -0.9591 0.4947 0.0724
2.36 -0.951 0.5652 0.0724