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Measurement E209M70

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

Spokespersons: Daniel S. Carman

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

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 : 0.9 — 3.5 GeV2
W : 1.625 — 2.4 GeV
Ebeam : 6.535 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 0.4006 0.7526 0.0716
1.8 -0.9331 0.1957 0.0724
1.88 -0.5447 0.1344 0.0718
1.96 -0.581 0.1557 0.0718
2.04 0.023 0.2436 0.0715
2.12 -0.1601 0.3827 0.0715
2.2 -0.3372 0.4606 0.0716
2.28 -0.9576 0.5367 0.0724
2.36 -0.6872 0.5901 0.072