CLAS Physics Database

Measurement E209M12

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
W, [GeV] P0y uncertainty syst. uncert.
1.64 -0.2532 0.0442 0.0442
1.66 -0.325 0.0287 0.0423
1.69 -0.2438 0.0222 0.0371
1.71 -0.2763 0.0177 0.0322
1.74 -0.2827 0.0175 0.0104
1.76 -0.2784 0.0173 0.0055
1.79 -0.2916 0.0176 0.0121
1.81 -0.2446 0.0182 0.0139
1.84 -0.2814 0.0184 0.0113
1.86 -0.291 0.0192 0.0398
1.89 -0.3683 0.0195 0.0124
1.91 -0.3295 0.0208 0.0088
1.94 -0.361 0.0216 0.0146
1.96 -0.3583 0.0229 0.0095
1.99 -0.3844 0.0236 0.008
2.01 -0.419 0.0249 0.0266
2.04 -0.4529 0.0254 0.017
2.06 -0.4144 0.0272 0.017
2.09 -0.3793 0.0276 0.0295
2.11 -0.4403 0.0288 0.0102
2.14 -0.4231 0.0299 0.0423
2.16 -0.4283 0.0308 0.034
2.19 -0.3991 0.0318 0.0171
2.21 -0.4153 0.0326 0.0368
2.24 -0.4821 0.0336 0.0387
2.26 -0.5025 0.0346 0.0308
2.29 -0.4448 0.0353 0.0148
2.31 -0.5032 0.0368 0.0312
2.34 -0.4508 0.0382 0.0188
2.36 -0.4757 0.0389 0.0238
2.39 -0.4394 0.0397 0.0258