CLAS Physics Database

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Measurement E151M796

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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 :	0.1715 GeV²
W :	1385 GeV
ε :	0.9248
E_beam :	2.2596 GeV
ε_L:	0.3819

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
0.35	66	-0.0558	1.0927	0.0304
0.35	294	-0.1296	0.808	0.0323
0.65	90	0.0561	1.1743	0.0304
0.65	102	-0.8738	1.0851	0.086
0.65	114	-1.4967	0.9938	0.1414
0.65	246	0.7869	1.0359	0.0786
0.65	270	0.524	1.0671	0.0569
0.75	90	1.7685	1.0966	0.166
0.75	102	0.2343	1.0558	0.037
0.75	114	2.2416	1.1323	0.2091
0.75	126	-1.7409	0.9522	0.1634
0.75	222	-2.3358	0.8423	0.2177
0.75	246	0.1294	0.8055	0.0323
0.75	258	-0.0963	0.9842	0.0313
0.75	270	0.522	0.997	0.0568
0.75	282	0.9962	1.1166	0.0967
0.85	90	2.1291	1.4225	0.1988
0.85	102	3.3557	1.193	0.3112
0.85	114	0.1524	1.2412	0.0331
0.85	138	-1.9637	1.1812	0.1837
0.85	234	-0.4493	1.1305	0.0512
0.85	246	0.2259	0.9591	0.0365
0.85	258	-1.0807	0.8671	0.1042
0.85	270	0.5834	1.0332	0.0616
0.85	282	0.4532	0.901	0.0515
0.85	294	-0.4011	0.9982	0.0477
0.95	258	2.9447	2.4016	0.2734
0.95	270	-1.2365	2.5363	0.118
0.95	282	-0.2973	2.6756	0.0407
0.95	294	1.0878	3.0953	0.1048
0.25	66	0.5397	0.6006	0.0464
0.35	66	1.4449	0.5901	0.0995
0.45	294	0.5114	0.5816	0.045
0.55	102	-0.3569	0.5616	0.0381
0.65	90	0.5325	0.6699	0.0461
0.65	102	-0.2673	0.5491	0.0348
0.65	114	0.0587	0.6627	0.0302
0.65	246	0.1831	0.6015	0.0323
0.65	258	-0.4572	0.6243	0.0424
0.75	90	-0.0904	0.6238	0.0306
0.75	102	0.5111	0.5298	0.045
0.75	114	0.2552	0.5651	0.0344
0.75	126	-0.1942	0.5965	0.0326
0.75	234	0.813	0.7171	0.0612
0.75	246	0.7808	0.6062	0.0594
0.75	258	0.3586	0.5146	0.0381
0.75	270	-1.0306	0.5364	0.074
0.85	90	-0.7017	0.6495	0.055
0.85	102	-0.7445	0.5783	0.0573
0.85	114	-0.321	0.5435	0.0367
0.85	126	-0.0865	0.6668	0.0305
0.85	222	-0.7031	0.6034	0.055
0.85	234	-0.9608	0.6595	0.0698
0.85	246	0.7589	0.656	0.0581
0.85	258	-0.0951	0.5116	0.0306
0.85	270	-0.7905	0.5215	0.0599
0.85	282	0.1103	0.5506	0.0309
0.85	294	0.8275	0.6464	0.062
0.95	138	-0.4561	1.1958	0.0424
0.95	222	1.0159	1.1887	0.0731
0.95	234	-1.6128	1.0105	0.11
0.95	246	0.1732	1.0075	0.0321
0.95	258	-1.0249	0.9351	0.0736
0.95	270	-0.9114	0.9534	0.0669
0.95	282	0.7259	1.022	0.0563