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Measurement E209M71

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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 : 0.9 — 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 0.9585 0.5737 0.0724
1.8 -0.0042 0.1828 0.0715
1.88 -0.255 0.1388 0.0715
1.96 -0.303 0.1714 0.0716
2.04 0.3339 0.2286 0.0716
2.12 0.8583 0.2772 0.0722
2.2 0.6089 0.3091 0.0719
2.28 0.3349 0.3618 0.0716
2.36 0.6358 0.4364 0.0719