CLAS Physics Database

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Measurement E151M733

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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 :	1235 GeV
ε :	0.97
E_beam :	2.2596 GeV
ε_L:	0.62

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	Stat. error	Syst. error
0.45	78	1.9964	2.2801	0.1867
0.55	270	0.6002	2.1507	0.063
0.65	270	-0.5433	1.5533	0.0584
0.65	282	0.3325	1.9983	0.0429
0.75	258	-1.0014	1.8019	0.0972
0.75	270	-1.1983	1.4707	0.1146
0.75	282	-1.0967	1.6779	0.1056
0.85	102	7.4246	2.9269	0.6859
0.85	114	0.121	2.199	0.032
0.85	126	-0.4457	2.6969	0.0509
0.85	138	-1.4777	2.4917	0.1396
0.95	114	-0.266	6.914	0.0388
0.95	126	6.6393	7.5786	0.6135
0.95	138	1.7269	6.556	0.1622
0.95	150	4.8356	7.6198	0.4473
0.95	162	0.3079	8.4745	0.0413
0.95	186	4.9082	7.6868	0.454
0.95	198	-8.6951	6.4303	0.8031
0.35	66	0.4132	0.3803	0.0404
0.35	78	0.5344	0.4274	0.0462
0.45	78	0.5676	0.3541	0.0478
0.55	78	-0.5667	0.314	0.0478
0.55	270	-0.1161	0.4568	0.031
0.55	282	0.3926	0.4543	0.0395
0.65	258	-0.1225	0.4476	0.0311
0.65	270	-0.0778	0.407	0.0304
0.65	282	-0.3307	0.322	0.037
0.75	102	0.0477	0.4877	0.0302
0.75	246	-0.3104	0.4672	0.0363
0.75	258	-0.6456	0.3295	0.0519
0.75	270	-0.0598	0.2879	0.0303
0.75	282	0.7196	0.3581	0.0559
0.85	90	1.0059	0.5172	0.0725
0.85	102	0.655	0.4757	0.0524
0.85	114	0.4838	0.4373	0.0437
0.85	126	0.441	0.395	0.0417
0.85	246	-0.3592	0.4214	0.0382
0.85	258	-0.238	0.4317	0.0338
0.85	270	-0.3108	0.3752	0.0363
0.95	102	-0.0224	0.6893	0.03
0.95	114	1.24	0.7283	0.0867
0.95	126	0.1723	0.6693	0.0321
0.95	138	-0.4473	0.7329	0.042
0.95	150	0.0818	0.7474	0.0305
0.95	162	0.1303	0.7763	0.0312
0.95	174	-0.2532	0.7568	0.0343
0.95	186	-1.2298	0.7004	0.0861