CLAS Physics Database

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Measurement E209M3

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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⁺ Λ, 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): W, GeV

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

Measured data:

W, GeV	P⁰_y′	Data errors	Systematic errors
1.64	-0.2939	0.0327	0.0261
1.66	-0.3101	0.02	0.0222
1.69	-0.3924	0.0149	0.0192
1.71	-0.3997	0.0147	0.017
1.74	-0.4575	0.0111	0.0119
1.76	-0.4879	0.0107	0.0255
1.79	-0.5111	0.0114	0.0129
1.81	-0.5023	0.0123	0.0083
1.84	-0.4925	0.0123	0.0134
1.86	-0.4723	0.0132	0.0165
1.89	-0.425	0.0132	0.0088
1.91	-0.4506	0.0136	0.0078
1.94	-0.3912	0.0146	0.0154
1.96	-0.3824	0.0149	0.0117
1.99	-0.3821	0.0155	0.0113
2.01	-0.4113	0.0165	0.0177
2.04	-0.4105	0.0174	0.0172
2.06	-0.4286	0.0182	0.0098
2.09	-0.4577	0.0187	0.0099
2.11	-0.4273	0.0194	0.0195
2.14	-0.4187	0.0204	0.0102
2.16	-0.3947	0.0213	0.0093
2.19	-0.4141	0.0216	0.0106
2.21	-0.3752	0.0223	0.0122
2.24	-0.3004	0.0238	0.008
2.26	-0.3418	0.0242	0.0116
2.29	-0.2846	0.0253	0.0099
2.31	-0.2864	0.0265	0.0201
2.34	-0.2392	0.0273	0.0101
2.36	-0.2798	0.0282	0.0165
2.39	-0.3025	0.0295	0.0144