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Measurement E209M83

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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 : 0.4 — 1 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 Stat. error Syst. error
1.72 -0.1774 0.7933 0.0715
1.8 -0.3794 0.2271 0.0716
1.88 -0.7187 0.1464 0.072
1.96 -0.2431 0.1683 0.0715
2.04 0.3221 0.2045 0.0716
2.12 0.1095 0.2349 0.0715
2.2 -0.1567 0.2708 0.0715
2.28 -0.5122 0.2846 0.0717
2.36 0.3175 0.3328 0.0716