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Measurement E209M56

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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+ 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 Data errors Systematic errors
1.64 -0.041 0.0614 0.0173
1.72 -0.0024 0.0212 0.0173
1.8 -0.011 0.0216 0.0173
1.88 -0.1029 0.0242 0.0173
1.96 -0.1459 0.0281 0.0174
2.04 -0.189 0.0319 0.0174
2.12 -0.2007 0.0332 0.0175
2.2 -0.1913 0.0358 0.0174
2.28 -0.1922 0.0398 0.0174
2.36 -0.2377 0.0427 0.0175