CLAS Physics Database

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Measurement E151M2041

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).

No publications available for this experiment

Quantity measured: A_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.0707 GeV²
W :	1445 GeV
ε :	0.9299
E_beam :	2.2596 GeV
ε_L:	0.1418

Select data slice:
cos(θ_π⁺) =

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

Parameter (X axis): φ(π⁺), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ_π⁺)	φ(π⁺), degrees	A_LL	Stat. error	Syst. error
0.25	54	-1.5034	0.5032	0.1105
0.25	66	-0.3157	0.5576	0.0468
0.25	78	1.0536	0.5417	0.0868
0.25	282	0.873	0.7214	0.0642
0.25	294	-0.5848	0.4722	0.0527
0.35	66	0.2244	0.3768	0.0503
0.35	78	0.5284	0.431	0.071
0.35	90	-0.0676	0.6728	0.0579
0.35	270	0.1715	0.743	0.032
0.35	282	-0.6384	0.3848	0.0552
0.35	294	0.6026	0.3749	0.0527
0.35	306	0.4889	0.5525	0.075
0.45	66	-0.8223	0.4224	0.064
0.45	78	-0.3543	0.3972	0.0455
0.45	90	0.4687	0.5247	0.1117
0.45	102	0.3401	1.1296	0.0433
0.45	270	-0.2038	0.4212	0.0515
0.45	282	0.2863	0.3822	0.0385
0.45	294	-0.4792	0.3765	0.0812
0.55	78	-0.1528	0.9377	0.0331
0.55	90	-1.6983	1.3002	0.1589
0.55	102	-0.2544	0.9811	0.038
0.55	114	-1.5941	0.9644	0.1495
0.55	126	-0.5231	0.995	0.0567
0.55	138	-1.3207	1.2964	0.125
0.55	234	-1.2867	1.1561	0.122
0.55	258	0.2115	0.7235	0.0357
0.55	270	-0.0357	0.7897	0.0302
0.55	282	-0.991	0.6509	0.0959
0.55	294	-1.8042	0.8189	0.1685
0.65	66	2.5721	0.9162	0.2383
0.65	78	0.2326	1.0926	0.0368
0.65	90	1.6602	0.9207	0.1555
0.65	102	1.4014	0.8349	0.1322
0.65	114	0.3166	0.813	0.0418
0.65	126	-0.0389	0.9124	0.0302
0.65	138	0.3256	1.1193	0.0424
0.65	150	-3.4238	3.4238	0.3161
0.65	210	0.8067	1.1553	0.08
0.65	222	0.6446	0.8731	0.0664
0.65	234	-1.6389	0.7083	0.1536
0.65	246	0.2383	0.6759	0.0371
0.65	258	-0.0975	0.7269	0.0313
0.65	270	-1.1477	0.9781	0.1097
0.65	282	0.3317	1.0491	0.0428
0.65	294	0.271	0.7636	0.039
0.65	306	-0.0518	0.9173	0.0304
0.75	66	-1.7067	1.2669	0.1597
0.75	78	-0.2108	1.2955	0.0357
0.75	90	0.9854	1.2267	0.0954
0.75	102	0.7929	0.9547	0.0788
0.75	114	1.2933	0.7869	0.1226
0.75	126	0.9953	0.8839	0.0963
0.75	138	-1.022	0.9978	0.0986
0.75	198	2.3955	1.046	0.2222
0.75	210	0.6684	1.0393	0.0684
0.75	222	-0.2162	0.8147	0.036
0.75	234	-0.8137	0.7825	0.0806
0.75	246	0.266	0.7997	0.0387
0.75	258	-0.0879	0.8434	0.0311
0.75	270	0.4583	1.0786	0.0517
0.75	282	0.4425	0.8648	0.0505
0.75	294	-1.2445	0.9253	0.1182
0.85	90	2.4857	1.0503	0.2304
0.85	102	-2.8375	1.3131	0.2625
0.85	114	0.7145	1.2384	0.0722
0.85	126	0.5065	1.1698	0.0554
0.85	138	-0.5968	1.1307	0.0625
0.85	150	-5.0842	5.0842	0.4682
0.85	210	-0.3359	1.3161	0.043
0.85	222	0.361	1.1716	0.0447
0.85	234	1.2933	0.8736	0.1226
0.85	246	-0.3062	0.8868	0.0411
0.85	258	0.0883	1.0385	0.0311
0.85	270	-0.4226	0.9616	0.0491
0.85	282	0.7152	1.2101	0.0722
0.95	102	-1.3046	4.1521	0.1236
0.95	222	0.7723	3.7818	0.0771
0.95	234	4.5104	2.9695	0.4156
0.95	246	-0.9086	2.8804	0.0887
0.95	258	-1.0508	3.2441	0.1011
0.45	306	0.7839	0.6656	0.0592
0.55	66	0.7675	0.5822	0.0582
0.55	78	-0.1238	0.5605	0.0311
0.55	90	0.4168	0.6255	0.0404
0.55	102	0.4039	0.6695	0.0399
0.55	114	0.7331	0.7123	0.0563
0.55	126	0.5082	0.7142	0.0446
0.55	246	-0.333	0.7672	0.037
0.55	258	-0.2787	0.5779	0.0351
0.55	270	-0.2049	0.4949	0.0328
0.55	282	-0.2182	0.4389	0.0332
0.55	294	-0.6446	0.5243	0.0516
0.65	66	-0.0526	0.5903	0.0302
0.65	78	-0.2858	0.6431	0.0353
0.65	90	-0.4413	0.6038	0.0415
0.65	102	-0.0972	0.6205	0.0307
0.65	114	-0.4092	0.6252	0.0401
0.65	126	-0.2118	0.5757	0.033
0.65	138	-0.1111	0.6779	0.0309
0.65	210	0.6813	0.8463	0.0535
0.65	222	-0.012	0.6493	0.03
0.65	234	-0.231	0.5567	0.0336
0.65	246	0.2232	0.5937	0.0333
0.65	258	0.137	0.555	0.0313
0.65	270	-0.149	0.5008	0.0315
0.65	282	0.7558	0.6478	0.0576
0.65	294	-0.0482	0.5506	0.0302
0.65	306	0.2944	0.6727	0.0356
0.75	66	-0.4217	0.7063	0.0407
0.75	90	1.2516	0.7327	0.0868
0.75	102	-0.5739	0.62	0.0479
0.75	114	-0.5906	0.6097	0.0487
0.75	126	-0.3402	0.5297	0.0373
0.75	138	-0.5245	0.7006	0.0454
0.75	150	-1.6017	0.8815	0.1084
0.75	198	-1.0941	0.857	0.0772
0.75	210	0.9554	0.7325	0.069
0.75	222	-0.4755	0.6467	0.0431
0.75	234	-0.4548	0.5922	0.0421
0.75	246	0.4774	0.5043	0.0432
0.75	258	0.067	0.542	0.0303
0.75	270	0.7028	0.7292	0.0547
0.75	282	-0.388	0.7007	0.0392
0.75	294	0.0262	0.6699	0.03
0.85	90	0.3914	0.6895	0.0393
0.85	102	-0.6484	0.7325	0.0518
0.85	114	-0.2111	0.7413	0.033
0.85	126	1.0164	0.6387	0.0726
0.85	138	-0.3005	0.677	0.0358
0.85	150	1.7207	0.9068	0.1159
0.85	174	-1.3315	1.0132	0.0917
0.85	210	-0.8144	0.8232	0.0609
0.85	222	-0.8177	0.781	0.0611
0.85	234	-0.4364	0.661	0.0413
0.85	246	-0.4639	0.5932	0.0426
0.85	258	0.0344	0.6215	0.0301
0.85	270	0.696	0.7107	0.0543
0.95	102	-0.9258	1.4467	0.0673
0.95	114	2.4116	1.3319	0.1597
0.95	222	-1.5204	1.4027	0.1034
0.95	234	0.1549	1.3001	0.0316
0.95	246	-0.2069	1.1076	0.0329
0.95	258	-0.8532	1.3111	0.0631