CLAS Physics Database

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Measurement E151M631

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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 :	0.1435 GeV²
W :	1535 GeV
ε :	0.8323
E_beam :	1.9889 GeV
ε_L:	0.1604

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
0.25	282	-0.1758	0.737	0.0319
0.35	282	0.4126	0.7644	0.0392
0.35	294	0.1361	0.7082	0.0311
0.45	282	2.073	0.6074	0.1303
0.45	294	0.3686	0.6176	0.0375
0.55	114	-0.5079	0.6567	0.0432
0.55	246	-0.0496	0.7795	0.0302
0.55	270	1.6881	0.7545	0.1075
0.55	282	0.5602	0.6859	0.0455
0.65	54	-0.4228	0.6644	0.0396
0.65	102	-0.2641	0.7292	0.0341
0.65	114	-0.4126	0.6655	0.0392
0.65	126	0.3014	0.6302	0.0352
0.65	150	1.224	0.841	0.0806
0.65	222	0.1759	0.7207	0.0319
0.65	234	2.5479	2.5479	0.1587
0.65	294	1.4215	0.8318	0.092
0.75	102	-0.4108	0.6874	0.0391
0.75	114	-0.6791	0.6861	0.0512
0.75	126	-0.1227	0.6136	0.0309
0.75	138	-1.4763	0.5543	0.0951
0.75	210	-0.1186	0.7513	0.0309
0.75	222	0.1498	0.5294	0.0314
0.75	234	1.1757	0.5955	0.0779
0.75	246	1.2316	0.5847	0.0811
0.75	258	-0.4427	0.6929	0.0404
0.75	282	2.5133	2.5133	0.1566
0.85	78	-0.1725	0.6997	0.0318
0.85	90	-0.091	0.5942	0.0305
0.85	114	-0.017	0.6696	0.03
0.85	138	-0.6446	0.6847	0.0495
0.85	198	2.2143	0.6783	0.1387
0.85	210	1.6346	0.7626	0.1044
0.85	222	0.3388	0.7403	0.0365
0.85	234	-0.2755	0.4903	0.0344
0.85	246	-0.0564	0.5894	0.0302
0.85	258	0.344	0.6372	0.0366
0.85	270	1.105	0.6978	0.0739
0.95	102	-0.6221	0.5477	0.0485
0.95	222	-0.8924	0.4792	0.0623
0.95	234	1.3219	0.5625	0.0862
0.95	258	1.4206	0.5283	0.0919
0.95	270	0.1591	0.5279	0.0315