CLAS Physics Database

Measurement E209M1

Experiment: CLAS12 RG-K K+Y recoil polarization
Year: 2025
Spokesperson: Daniel S. Carman
Reaction: ep → K+ Λ
Polarization: final
Quantity: P0y′
Q2: 0.3 — 3.5 GeV2
W: 1.625 — 2.4 GeV
Ebeam: 6.535 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
-0.96 0.2182 0.1258
-0.88 0.0053 0.0254
-0.8 -0.0929 0.0166
-0.72 -0.1982 0.0148
-0.64 -0.3185 0.0144
-0.56 -0.4207 0.0141
-0.48 -0.5367 0.0148
-0.4 -0.5663 0.0151
-0.32 -0.6314 0.0156
-0.24 -0.6524 0.0155
-0.16 -0.66 0.0153
-0.08 -0.6421 0.0154
0.0 -0.6449 0.0145
0.08 -0.6024 0.0144
0.16 -0.6008 0.0143
0.24 -0.5718 0.0138
0.32 -0.551 0.0135
0.4 -0.5358 0.0129
0.48 -0.5396 0.012
0.56 -0.5 0.0117
0.64 -0.4782 0.0113
0.72 -0.4124 0.0112
0.8 -0.4068 0.0115
0.88 -0.3076 0.0126
0.96 -0.1477 0.0163