CLAS Physics Database

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Measurement E19M33

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Experiment: E89-004, 2005

Spokespersons: R. A. Schumacher

Experiment comment: Correlated data on W & cos(theta) distribution are available in E19M33 and E19M34 measurements.

Publication:

R. Bradford, R. A. Schumacher, and CLAS Collaboration First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction // Submitted to Physical Review C

Quantity measured: C_x, dimensionless
Spin transfer coefficient C_x for circularly polarized photon beam and recoiling polarized hyperons.
Beam: γ, polarization: circular
Target: p (Z=1, A=1), polarization: none
Final state: K⁺ Σ⁰, polarization: none

W :	1.787 — 2.454 GeV
E_γ :	0 GeV

Select data slice:
W = GeV

Observable quantity measured (Y axis): C_x, dimensionless
Plot measurement data

Parameter (X axis): cos(θ), dimensionless

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Measured data:

W, GeV	cos(θ), dimensionless	C_x, dimensionless	Data errors, dimensionless
1.787	-0.7	0	0
1.787	-0.4	-1.348	0.595
1.787	-0.1	-0.227	0.379
1.787	0.2	-0.792	0.371
1.787	0.5	-0.438	0.305
1.787	0.8	-0.286	0.442
1.839	-0.7	0	0
1.839	-0.4	-1.045	0.335
1.839	-0.1	-0.963	0.226
1.839	0.2	-0.563	0.193
1.839	0.5	-0.756	0.192
1.839	0.8	-0.077	0.277
1.889	-0.7	-0.729	0.67
1.889	-0.4	-0.007	0.257
1.889	-0.1	-0.437	0.157
1.889	0.2	-0.131	0.137
1.889	0.5	-0.552	0.139
1.889	0.8	-0.074	0.205
1.939	-0.7	-1.622	0.693
1.939	-0.4	-0.131	0.238
1.939	-0.1	-0.02	0.156
1.939	0.2	-0.227	0.134
1.939	0.5	-0.41	0.14
1.939	0.8	-0.309	0.218
1.987	-0.7	-0.115	0.767
1.987	-0.4	-0.49	0.283
1.987	-0.1	-0.312	0.173
1.987	0.2	-0.64	0.147
1.987	0.5	-0.362	0.143
1.987	0.8	-0.047	0.216
2.035	-0.7	0.936	0.683
2.035	-0.4	-0.406	0.341
2.035	-0.1	-0.878	0.195
2.035	0.2	-0.731	0.153
2.035	0.5	-0.55	0.139
2.035	0.8	0.168	0.201
2.081	-0.7	-0.011	0.644
2.081	-0.4	-1	0.507
2.081	-0.1	-0.891	0.24
2.081	0.2	-0.912	0.179
2.081	0.5	-0.429	0.164
2.081	0.8	-0.745	0.253
2.126	-0.7	0.782	0.529
2.126	-0.4	-1.255	0.403
2.126	-0.1	-0.458	0.264
2.126	0.2	-0.388	0.176
2.126	0.5	-0.601	0.166
2.126	0.8	-0.227	0.182
2.17	-0.7	-1.268	0.48
2.17	-0.4	-1.606	0.43
2.17	-0.1	-0.629	0.294
2.17	0.2	-1.315	0.196
2.17	0.5	0.004	0.188
2.17	0.8	-0.185	0.216
2.212	-0.7	-0.019	0.457
2.212	-0.4	-0.535	0.438
2.212	-0.1	-0.405	0.332
2.212	0.2	-0.507	0.214
2.212	0.5	-0.029	0.183
2.212	0.8	0.002	0.209
2.255	-0.7	1.186	0.761
2.255	-0.4	0.134	0.515
2.255	-0.1	-0.92	0.404
2.255	0.2	-0.424	0.3
2.255	0.5	-0.312	0.203
2.255	0.8	-0.521	0.267
2.296	-0.7	-0.074	0.676
2.296	-0.4	0.01	0.686
2.296	-0.1	0.97	0.55
2.296	0.2	-0.435	0.398
2.296	0.5	-0.232	0.24
2.296	0.8	-0.042	0.227
2.338	-0.7	-1.507	0.71
2.338	-0.4	0.253	0.872
2.338	-0.1	0.956	1.071
2.338	0.2	0.137	0.581
2.338	0.5	-0.53	0.337
2.338	0.8	-0.015	0.327
2.377	-0.7	-1.474	1.238
2.377	-0.4	0.08	2.297
2.377	-0.1	-3.047	1.204
2.377	0.2	0.014	0.835
2.377	0.5	0.459	0.363
2.377	0.8	-0.49	0.315
2.416	-0.7	0.446	1.85
2.416	-0.4	0.933	1.03
2.416	-0.1	-1.616	1.587
2.416	0.2	-1.441	0.948
2.416	0.5	-0.975	0.507
2.416	0.8	0.587	0.413
2.454	-0.7	-0.986	1.066
2.454	-0.4	-1.042	1.022
2.454	-0.1	1.461	1.218
2.454	0.2	-0.333	1.151
2.454	0.5	0.392	0.692
2.454	0.8	-0.743	0.505