CLAS Physics Database

Measurement E209M7

Experiment: CLAS12 RG-K K+Y recoil polarization
Year: 2025
Spokesperson: Daniel S. Carman
Reaction: ep → K+ Λ
Polarization: final
Quantity: P0y′
Q2: 0.4 — 4.5 GeV2
W: 1.625 — 2.4 GeV
Ebeam: 7.546 GeV
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

Measurement data
cos(θKc.m.) P0y′ uncertainty syst. uncert.
-0.96 -0.1199 0.1502 0.1978
-0.88 -0.05 0.0331 0.0305
-0.8 -0.1949 0.0213 0.0213
-0.72 -0.3108 0.0209 0.0114
-0.64 -0.3296 0.0207 0.0055
-0.56 -0.5314 0.0212 0.0263
-0.48 -0.5879 0.0243 0.0152
-0.4 -0.6565 0.0221 0.0246
-0.32 -0.6032 0.0239 0.0111
-0.24 -0.6709 0.0224 0.0198
-0.16 -0.6468 0.0225 0.0126
-0.08 -0.6383 0.0212 0.0245
0.0 -0.6894 0.0196 0.0125
0.08 -0.623 0.0216 0.0232
0.16 -0.6442 0.0212 0.0093
0.24 -0.6383 0.0199 0.0129
0.32 -0.5943 0.0181 0.0104
0.4 -0.5737 0.017 0.0086
0.48 -0.5398 0.0155 0.0115
0.56 -0.5479 0.0145 0.01
0.64 -0.481 0.0139 0.0098
0.72 -0.4722 0.0125 0.021
0.8 -0.4506 0.0127 0.02
0.88 -0.3577 0.0154 0.023
0.96 -0.2382 0.0154 0.0123