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Measurement E209M58

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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 : 0.3 — 0.9 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 -0.9526 0.7111 0.0724
1.8 0.4935 0.1248 0.0717
1.88 0.6843 0.0723 0.072
1.96 0.2785 0.0834 0.0716
2.04 -0.21 0.1323 0.0715
2.12 -0.0791 0.1783 0.0715
2.2 0.2877 0.2176 0.0716
2.28 -0.0534 0.2686 0.0715
2.36 -0.0194 0.3507 0.0715