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Measurement E209M55

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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+ Λ, 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 Stat. error Syst. error
1.64 0.0145 0.0697 0.0173
1.72 -0.0076 0.0283 0.0173
1.8 -0.051 0.0289 0.0173
1.88 -0.1221 0.0343 0.0174
1.96 -0.0333 0.0424 0.0173
2.04 -0.0442 0.0471 0.0173
2.12 -0.0398 0.0541 0.0173
2.2 -0.0489 0.061 0.0173
2.28 -0.0576 0.0697 0.0173
2.36 -0.0788 0.079 0.0173