CLAS Physics Database

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Measurement E151M354

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

Q² :	0.0348 GeV²
W :	1445 GeV
ε :	0.7912
E_beam :	1.3383 GeV
ε_L:	0.0628

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Data errors	Systematic errors
0.25	30	-0.4688	0.7734	0.0412
0.25	42	-0.869	0.6636	0.0603
0.35	30	-0.4307	0.7763	0.0397
0.35	42	0.8972	1.2413	0.0618
0.45	30	-0.0497	0.7929	0.0301
0.45	42	0.4728	0.9161	0.0414
0.45	234	-0.6662	0.7959	0.0501
0.55	30	-0.1444	1.0047	0.0312
0.55	42	2.4956	2.4956	0.1532
0.55	126	-0.4487	0.7417	0.0404
0.55	138	-1.086	0.6237	0.0719
0.55	162	0.599	1.2937	0.0469
0.55	222	0.3409	0.867	0.0363
0.55	234	0.8747	0.9455	0.0606
0.55	246	-0.196	0.7627	0.0322
0.55	258	0.2035	0.8404	0.0324
0.65	126	-0.0369	0.7605	0.0301
0.65	138	-0.4584	0.6372	0.0408
0.65	150	-1.6436	0.4103	0.1034
0.65	162	-0.9178	0.6776	0.0629
0.65	198	2.148	1.2436	0.1328
0.65	210	-0.6075	0.6234	0.0473
0.65	222	1.3195	0.7704	0.0849
0.65	234	1.0291	0.7128	0.0688
0.65	246	0.229	0.7519	0.033
0.65	258	1.8314	1.2571	0.1143
0.75	126	-0.789	0.6492	0.0562
0.75	138	-1.3966	0.4244	0.0893
0.75	150	-0.4661	0.787	0.0411
0.75	162	0.102	0.9139	0.0306
0.75	210	-0.0188	0.9866	0.03
0.75	222	-0.2945	0.6737	0.0348
0.75	234	0.6454	0.7352	0.0491
0.75	246	-0.0702	0.6205	0.0303
0.75	258	0.161	0.8214	0.0315
0.85	114	-1.0461	0.6986	0.0698
0.85	126	0.0982	1.041	0.0306
0.85	210	-0.4437	0.7171	0.0402
0.85	222	0.7462	0.7974	0.054
0.85	234	0.0756	0.6574	0.0303
0.85	246	-0.869	0.3924	0.0603
0.85	258	-0.6745	0.5646	0.0505
0.95	126	-0.4991	0.745	0.0425
0.95	234	0.4082	0.8104	0.0388
0.95	246	0.1423	0.8061	0.0312
0.95	258	-0.0226	0.6862	0.03
0.15	30	1.0593	0.708	0.0721
0.35	30	0.6256	0.7213	0.049
0.45	18	1.4074	0.6743	0.0922
0.45	30	-0.3757	0.5192	0.038
0.45	42	0.9841	0.5199	0.0679
0.55	42	0.8425	0.645	0.0602
0.55	126	-0.0974	0.6901	0.0306
0.55	150	-0.2015	0.6295	0.0325
0.55	162	-0.8248	0.6485	0.0592
0.55	222	0.331	0.5126	0.0363
0.55	234	0.1191	0.6024	0.0309
0.55	246	0.7869	0.5938	0.0572
0.65	126	-1.7484	0.406	0.1123
0.65	138	0.1051	0.4446	0.0307
0.65	150	0.5786	0.562	0.0467
0.65	162	-1.5704	0.5173	0.1018
0.65	198	0.7915	0.6443	0.0575
0.65	210	0.2378	0.5617	0.0334
0.65	222	0.9998	0.5344	0.0688
0.65	234	-0.2119	0.4063	0.0327
0.65	246	1.1629	0.4534	0.078
0.65	258	0.9751	0.6135	0.0674
0.75	126	-0.7482	0.4686	0.0552
0.75	138	0.0885	0.4834	0.0305
0.75	150	-0.739	0.5317	0.0547
0.75	162	-0.6207	0.5982	0.0488
0.75	210	0.2272	0.7067	0.0331
0.75	222	0.8142	0.5319	0.0587
0.75	234	0.6064	0.4075	0.0481
0.75	246	0.3264	0.4204	0.0362
0.75	258	1.3151	0.4976	0.0868
0.85	138	-1.0947	0.6263	0.0741
0.85	210	-0.013	0.6854	0.03
0.85	222	-0.1027	0.487	0.0307
0.85	234	0.1127	0.4825	0.0308
0.85	246	0.2863	0.4123	0.0348
0.85	258	0.2704	0.5133	0.0344
0.95	114	0.5733	0.5651	0.0465
0.95	126	0.4422	0.556	0.0406
0.95	222	-1.2711	0.4726	0.0842
0.95	234	1.1291	0.5386	0.0761
0.95	246	-0.1269	0.5038	0.031