CLAS Physics Database

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Measurement E18M37

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Experiment: E89-004, 2005

Spokespersons: R. A. Schumacher

Experiment comment: Correlated data on W & cos(theta) distribution are available in E18M37 and E18M38 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⁺ Λ, polarization: none

W :	1.679 — 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
1.679	-0.75	0	0
1.679	-0.55	0.114	0.724
1.679	-0.35	-0.96	0.269
1.679	-0.15	-0.304	0.186
1.679	0.05	-0.47	0.169
1.679	0.25	-0.7	0.175
1.679	0.45	-0.444	0.139
1.679	0.65	-0.216	0.154
1.679	0.85	-0.126	0.19
1.734	-0.75	0	0
1.734	-0.55	-0.453	0.31
1.734	-0.35	-0.543	0.186
1.734	-0.15	-0.26	0.136
1.734	0.05	-0.301	0.123
1.734	0.25	-0.426	0.108
1.734	0.45	-0.235	0.089
1.734	0.65	-0.189	0.103
1.734	0.85	-0.262	0.16
1.787	-0.75	0.14	1.021
1.787	-0.55	-0.224	0.228
1.787	-0.35	-0.065	0.138
1.787	-0.15	-0.375	0.112
1.787	0.05	0.041	0.097
1.787	0.25	-0.185	0.081
1.787	0.45	-0.072	0.069
1.787	0.65	-0.061	0.069
1.787	0.85	-0.086	0.094
1.839	-0.75	0.024	0.303
1.839	-0.55	-0.094	0.148
1.839	-0.35	-0.237	0.109
1.839	-0.15	-0.16	0.089
1.839	0.05	-0.056	0.081
1.839	0.25	-0.086	0.067
1.839	0.45	-0.139	0.063
1.839	0.65	-0.044	0.062
1.839	0.85	0.015	0.081
1.889	-0.75	-0.099	0.155
1.889	-0.55	-0.266	0.106
1.889	-0.35	-0.145	0.097
1.889	-0.15	0.05	0.078
1.889	0.05	-0.074	0.07
1.889	0.25	-0.047	0.058
1.889	0.45	-0.149	0.053
1.889	0.65	-0.218	0.05
1.889	0.85	-0.038	0.067
1.939	-0.75	-0.086	0.129
1.939	-0.55	-0.104	0.115
1.939	-0.35	-0.047	0.093
1.939	-0.15	-0.027	0.08
1.939	0.05	0.003	0.07
1.939	0.25	0.002	0.054
1.939	0.45	-0.076	0.047
1.939	0.65	-0.191	0.046
1.939	0.85	-0.084	0.06
1.987	-0.75	-0.216	0.155
1.987	-0.55	-0.058	0.135
1.987	-0.35	-0.14	0.116
1.987	-0.15	-0.014	0.112
1.987	0.05	0.226	0.08
1.987	0.25	-0.105	0.059
1.987	0.45	-0.128	0.054
1.987	0.65	-0.319	0.049
1.987	0.85	-0.195	0.073
2.035	-0.75	-0.121	0.145
2.035	-0.55	-0.497	0.149
2.035	-0.35	-0.305	0.141
2.035	-0.15	-0.168	0.11
2.035	0.05	-0.01	0.081
2.035	0.25	0.12	0.063
2.035	0.45	-0.112	0.05
2.035	0.65	-0.241	0.055
2.035	0.85	-0.331	0.071
2.081	-0.75	-0.384	0.18
2.081	-0.55	-0.618	0.189
2.081	-0.35	-0.96	0.19
2.081	-0.15	-0.056	0.139
2.081	0.05	0.229	0.107
2.081	0.25	0.087	0.071
2.081	0.45	-0.109	0.056
2.081	0.65	-0.335	0.065
2.081	0.85	-0.448	0.074
2.126	-0.75	-0.522	0.182
2.126	-0.55	-1.082	0.181
2.126	-0.35	-0.957	0.174
2.126	-0.15	-0.558	0.15
2.126	0.05	-0.034	0.111
2.126	0.25	0.29	0.077
2.126	0.45	-0.154	0.11
2.126	0.65	-0.328	0.166
2.126	0.85	-0.475	0.063
2.17	-0.75	-0.501	0.186
2.17	-0.55	-0.962	0.161
2.17	-0.35	-0.896	0.168
2.17	-0.15	-0.121	0.161
2.17	0.05	0.053	0.121
2.17	0.25	0.078	0.088
2.17	0.45	-0.047	0.068
2.17	0.65	-0.431	0.062
2.17	0.85	-0.552	0.061
2.212	-0.75	-0.983	0.252
2.212	-0.55	-0.8	0.187
2.212	-0.35	-0.711	0.273
2.212	-0.15	-0.17	0.18
2.212	0.05	-0.145	0.131
2.212	0.25	0.034	0.106
2.212	0.45	0.02	0.084
2.212	0.65	-0.299	0.056
2.212	0.85	-0.455	0.062
2.255	-0.75	-0.69	0.226
2.255	-0.55	-0.466	0.268
2.255	-0.35	-0.931	0.252
2.255	-0.15	-0.504	0.229
2.255	0.05	0.206	0.194
2.255	0.25	0.245	0.136
2.255	0.45	-0.183	0.098
2.255	0.65	-0.466	0.077
2.255	0.85	-0.421	0.075
2.296	-0.75	-0.357	0.384
2.296	-0.55	-0.232	0.29
2.296	-0.35	-0.354	0.261
2.296	-0.15	-0.241	0.32
2.296	0.05	0.28	0.299
2.296	0.25	0.636	0.194
2.296	0.45	0.032	0.13
2.296	0.65	-0.492	0.083
2.296	0.85	-0.45	0.087
2.338	-0.75	-0.79	0.385
2.338	-0.55	-0.697	0.422
2.338	-0.35	-0.253	0.402
2.338	-0.15	-0.521	0.366
2.338	0.05	-0.097	0.278
2.338	0.25	0.107	0.231
2.338	0.45	0.191	0.156
2.338	0.65	-0.393	0.334
2.338	0.85	-0.416	0.157
2.377	-0.75	-0.393	0.432
2.377	-0.55	-0.007	0.42
2.377	-0.35	-0.938	0.466
2.377	-0.15	-0.188	0.406
2.377	0.05	-0.521	0.403
2.377	0.25	-0.289	0.401
2.377	0.45	-0.426	0.189
2.377	0.65	-0.258	0.126
2.377	0.85	-0.45	0.114
2.416	-0.75	-0.135	0.569
2.416	-0.55	-0.102	0.554
2.416	-0.35	-0.903	0.472
2.416	-0.15	-0.866	0.533
2.416	0.05	-0.052	0.534
2.416	0.25	0.122	0.405
2.416	0.45	-0.126	0.238
2.416	0.65	-0.385	0.14
2.416	0.85	-0.155	0.205
2.454	-0.75	0.534	0.796
2.454	-0.55	0.064	1.182
2.454	-0.35	0.105	0.713
2.454	-0.15	-0.289	0.442
2.454	0.05	-0.549	0.717
2.454	0.25	0.071	0.402
2.454	0.45	-0.083	0.233
2.454	0.65	-0.474	0.213
2.454	0.85	-0.449	0.212