CLAS Physics Database

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Measurement E151M2015

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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 :	0.101 GeV²
W :	1385 GeV
ε :	0.9405
E_beam :	2.2596 GeV
ε_L:	0.2578

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	66	0.2691	0.5898	0.0347
0.25	78	1.1739	0.6292	0.082
0.25	294	-0.2494	0.5875	0.0341
0.35	66	-0.6234	0.6009	0.0504
0.35	78	0.148	0.5487	0.0315
0.35	282	-1.3837	0.5422	0.0949
0.35	294	-0.3916	0.5437	0.0394
0.35	306	0.6008	0.6502	0.0493
0.45	66	-0.3626	0.6727	0.0382
0.45	78	0.997	0.4561	0.0715
0.45	282	-0.3593	0.6601	0.038
0.45	294	-0.0641	0.5368	0.0303
0.55	66	-0.4754	0.7023	0.0431
0.55	78	-1.6297	0.4852	0.1102
0.55	90	0.2904	0.6532	0.0355
0.55	102	0.1306	0.8232	0.0312
0.55	114	0.5843	0.7862	0.0484
0.55	282	-1.7081	0.574	0.1151
0.55	294	-0.4918	0.5824	0.0439
0.65	66	0.7369	0.6596	0.0566
0.65	78	-0.4649	0.6382	0.0426
0.65	90	-1.2348	0.6314	0.0857
0.65	102	-0.8735	0.5346	0.0643
0.65	114	-0.4246	0.5684	0.0408
0.65	126	0.4153	0.6432	0.0404
0.65	234	-0.5308	0.726	0.0457
0.65	246	0.3347	0.6144	0.0371
0.65	258	-0.5793	0.5229	0.0482
0.65	270	0.4318	0.7847	0.0411
0.75	90	0.5526	0.7671	0.0468
0.75	102	-0.572	0.5317	0.0478
0.75	114	0.1436	0.5227	0.0314
0.75	126	0.6155	0.5998	0.05
0.75	138	-0.1004	0.7864	0.0307
0.75	210	0.9955	0.8142	0.0714
0.75	222	-0.5904	0.6278	0.0487
0.75	234	0.3547	0.5782	0.0378
0.75	246	-0.2419	0.5516	0.0339
0.75	258	-0.6085	0.5423	0.0497
0.75	270	0.2362	0.5463	0.0337
0.85	90	-0.1427	0.7425	0.0314
0.85	102	0.767	0.6045	0.0582
0.85	114	-0.0994	0.6044	0.0307
0.85	126	-0.2737	0.5728	0.0349
0.85	138	0.7339	0.7071	0.0564
0.85	150	-0.841	0.8813	0.0624
0.85	222	-0.0187	0.7025	0.03
0.85	234	0.0199	0.5621	0.03
0.85	246	-0.0465	0.5437	0.0302
0.85	258	0.2908	0.5228	0.0355
0.85	270	-0.0582	0.5305	0.0302
0.85	282	1.0588	0.5532	0.0751
0.95	90	1.703	1.2259	0.1148
0.95	126	0.3677	1.2975	0.0384
0.95	222	1.0381	1.2761	0.0739
0.95	234	0.5329	1.1505	0.0458
0.95	246	-2.4193	1.1092	0.1602
0.95	258	-0.1172	0.9039	0.031
0.95	270	1.8622	0.9258	0.1248
0.15	306	0.9957	1.0022	0.0963
0.25	54	-1.4491	1.3196	0.1365
0.25	66	0.0865	1.1653	0.031
0.25	294	-0.3068	1.0795	0.0412
0.35	66	0.3976	1.0084	0.0473
0.35	78	-1.2987	1.0587	0.1231
0.35	282	0.4462	1.0394	0.0508
0.35	294	-0.3674	0.8228	0.0452
0.35	306	-0.2439	0.9846	0.0374
0.45	66	0.5322	1.1682	0.0574
0.45	78	-1.0122	0.9118	0.0977
0.45	270	1.134	1.0792	0.1084
0.45	282	-0.5638	0.893	0.0599
0.45	294	1.4075	0.7933	0.1328
0.55	66	1.3878	1.0528	0.131
0.55	78	0.5265	1.0306	0.0569
0.55	90	1.6394	1.3588	0.1536
0.55	270	-0.6758	0.9737	0.069
0.55	282	-1.2387	0.8554	0.1177
0.55	294	1.7886	0.9526	0.1671
0.65	102	0.894	1.0461	0.0875
0.65	114	1.3563	1.1689	0.1282
0.65	126	-1.679	1.3424	0.1572
0.65	246	-0.0823	1.0585	0.0309
0.65	258	-1.5002	0.907	0.1411
0.65	270	1.6776	1.0939	0.1571
0.75	90	0.7846	1.2608	0.0781
0.75	102	0.0607	1.0133	0.0305
0.75	114	-0.3005	0.9681	0.0408
0.75	126	-2.448	1.0428	0.227
0.75	138	-0.5357	1.3834	0.0577
0.75	222	-1.0938	0.8623	0.1049
0.75	234	-0.4833	0.88	0.0536
0.75	246	0.6513	0.7952	0.067
0.75	258	-1.5736	0.8457	0.1477
0.75	270	-1.4172	1.0385	0.1337
0.75	282	0.1732	1.1769	0.034
0.85	78	2.5844	1.5324	0.2394
0.85	90	0.6502	1.559	0.0669
0.85	102	0.1456	1.2162	0.0328
0.85	114	-0.4232	1.2617	0.0491
0.85	126	-0.1342	1.0879	0.0324
0.85	138	0.6826	1.2121	0.0695
0.85	150	0.2373	1.4457	0.0371
0.85	210	-1.3275	1.5276	0.1256
0.85	222	1.2954	1.1396	0.1228
0.85	234	0.2857	1.016	0.0399
0.85	246	0.9991	1.0506	0.0966
0.85	258	0.4909	0.9796	0.0542
0.85	270	0.8189	0.9541	0.081
0.85	282	-0.3779	0.9488	0.0459
0.95	90	-1.0466	4.4277	0.1008
0.95	126	0.3596	4.4851	0.0446
0.95	210	4.5108	4.2896	0.4156
0.95	222	-2.0793	3.8847	0.1934
0.95	234	5.1528	3.6986	0.4745
0.95	246	-3.4205	3.3121	0.3158
0.95	258	-1.085	3.0109	0.1041
0.95	270	4.5104	3.0192	0.4156