CLAS Physics Database

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Measurement E209M14

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Experiment: CLAS12 RG-K K+Y recoil polarization, 2025

Spokespersons: Daniel S. Carman

Publication:

D. S. Carman et al. (CLAS Collaboration) Recoil Polarization in K+Y Electroproduction in the Nucleon Resonance Region with CLAS12 // https://arxiv.org/abs/2505.12030

Quantity measured: P⁰_y′,
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 — 3.5 GeV²
W :	1.625 — 2.4 GeV
E_beam :	6.535 GeV

Observable quantity measured (Y axis): P⁰_y′,
Plot measurement data

Parameter (X axis): Q², GeV²

Click here to get data in text file, delimited with tabs.

Measured data:

Q², GeV²	P⁰_y′	Data errors	Systematic errors
0.35	0.237	0.0456	0.0898
0.45	0.3083	0.0478	0.0502
0.55	0.1925	0.0562	0.0584
0.65	0.0779	0.0668	0.0938
0.75	-0.0271	0.0788	0.1742
0.85	-0.2166	0.0909	0.1025
0.95	-0.1548	0.102	0.1443
1.05	-0.3726	0.1183	0.1808
1.15	-0.2186	0.1336	0.0755
1.25	-0.246	0.1492	0.1315
1.35	-0.1876	0.1717	0.097
1.45	-0.2831	0.1933	0.1172
1.6	-0.4612	0.1596	0.1882
1.8	-0.2536	0.1981	0.1296
2	-0.2244	0.2354	0.0284
2.2	-0.2356	0.2696	0.0228
2.4	0.4791	0.3094	0.0816
2.65	0.0374	0.3263	0.0227
2.95	0.293	0.4358	0.2699
3.3	0.4296	0.5325	0.2472