CLAS Physics Database

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Measurement E151M245

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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 :	0.101 GeV²
W :	1265 GeV
ε :	0.8899
E_beam :	1.3383 GeV
ε_L:	0.4696

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
0.45	270	-0.4148	0.4501	0.0395
0.45	282	0.0709	0.394	0.0313
0.55	258	0.0153	0.7611	0.03
0.55	270	-0.0794	0.2986	0.0358
0.55	282	-0.0191	0.3216	0.0301
0.65	246	-0.3011	0.4484	0.0353
0.65	258	0.4123	0.3837	0.0394
0.65	270	-0.286	0.3109	0.0348
0.65	282	0.1303	0.3538	0.0311
0.65	294	0.2942	0.4564	0.0351
0.75	114	-0.9775	0.4874	0.0676
0.75	126	0.0288	0.4925	0.0301
0.75	234	0.2274	0.5253	0.0331
0.75	246	-0.3578	0.3543	0.0373
0.75	258	-0.3532	0.3131	0.0371
0.75	270	0.6509	0.3322	0.0502
0.75	282	-0.1799	0.4033	0.032
0.75	294	-0.2708	0.3817	0.0344
0.85	102	-0.5207	0.4436	0.044
0.85	114	0.0745	0.355	0.0304
0.85	126	0.4822	0.3801	0.0423
0.85	138	0.3036	0.3761	0.0354
0.85	150	0.1565	0.4295	0.0315
0.85	162	-0.1015	0.4574	0.0307
0.85	174	0.6832	0.4823	0.0519
0.85	222	0.1021	0.5252	0.0307
0.85	234	-0.4697	0.4596	0.0418
0.85	246	-0.0781	0.3889	0.0304
0.85	258	0.0399	0.3212	0.0301
0.85	270	-0.2609	0.3806	0.0341
0.85	282	-0.0675	0.3259	0.0303
0.85	294	-0.3023	0.3647	0.0354
0.95	66	-0.2009	0.4358	0.0325
0.95	78	0.6657	0.433	0.051
0.95	114	-0.6126	0.3218	0.0484
0.95	126	0.5528	0.347	0.0455
0.95	138	-0.1464	0.3816	0.0313
0.95	150	0.1319	0.3317	0.0311
0.95	162	-0.7546	0.3214	0.0555
0.95	174	-0.2134	0.4213	0.0328
0.95	186	-0.3621	0.3794	0.0375
0.95	198	1.1732	0.4047	0.0786
0.95	234	-0.2304	0.4239	0.0332
0.95	270	0.0362	0.4475	0.0301
0.55	294	-0.5462	0.5907	0.0445
0.65	246	-0.7176	0.4418	0.0526
0.65	258	0.6468	0.7332	0.0492
0.65	270	0.4228	0.5246	0.0393
0.65	282	0.5218	0.5724	0.0434
0.65	294	-0.4589	0.5344	0.0408
0.75	114	-0.164	0.7234	0.0316
0.75	126	1.1966	0.9201	0.0781
0.75	234	0.0191	0.6651	0.03
0.75	246	0.7517	0.716	0.0543
0.75	258	0.5	0.5671	0.0425
0.75	270	-0.5577	0.3529	0.045
0.75	282	0.0485	0.4788	0.0301
0.75	294	-0.2154	0.472	0.0327
0.85	102	0.3352	0.7189	0.0362
0.85	114	-0.7567	0.4186	0.0546
0.85	126	-0.1408	0.4696	0.0312
0.85	138	-0.0031	0.5767	0.03
0.85	150	-0.167	0.5643	0.0316
0.85	162	0.3415	0.801	0.0364
0.85	174	2.926	2.926	0.1787
0.85	234	-0.5838	0.5776	0.0462
0.85	246	-0.1644	0.5588	0.0316
0.85	258	-0.6548	0.3535	0.0495
0.85	270	-0.5716	0.3272	0.0457
0.85	282	0.7067	0.5911	0.0521
0.85	294	-0.0206	0.5497	0.03
0.95	66	-0.6848	0.4749	0.051
0.95	102	-0.2476	0.539	0.0335
0.95	114	0.0812	0.6196	0.0304
0.95	126	0.8958	0.8015	0.0617
0.95	150	0.0056	0.6155	0.03
0.95	162	-0.9476	0.2874	0.0645
0.95	174	0.0855	0.5993	0.0304
0.95	186	0.5218	0.819	0.0434
0.95	270	0.0341	0.5467	0.0301
0.95	282	0.3117	0.7525	0.0354