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Measurement E209M72

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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: 1.0]

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 -0.4545 0.7225 0.0717
1.8 -0.3503 0.296 0.0716
1.88 0.2826 0.2396 0.0716
1.96 -0.5796 0.3097 0.0718
2.04 -0.3095 0.284 0.0716
2.12 -0.0432 0.3448 0.0715
2.2 -0.7476 0.3408 0.072
2.28 0.4153 0.3044 0.0717
2.36 0.19 0.3068 0.0715