CLAS Physics Database

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Measurement E151M3128

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

Q² :	0.0348 GeV²
W :	1655 GeV
ε :	0.7866
E_beam :	1.9889 GeV
ε_L:	0.0269

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LU,
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_LU	Stat. error	Syst. error
0.35	66	0.2219	0.2883	0.0303
0.35	270	0.5037	0.2341	0.0316
0.35	282	0.035	0.2646	0.03
0.45	78	0.351	0.226	0.0308
0.45	90	-0.2186	0.264	0.0303
0.45	126	-0.0195	0.2564	0.03
0.45	270	0.1862	0.2011	0.0302
0.45	282	0.149	0.2732	0.0301
0.45	294	-0.0446	0.243	0.03
0.45	330	-0.0948	0.2756	0.0301
0.55	126	0.1512	0.2127	0.0302
0.55	138	-0.0662	0.2614	0.03
0.55	198	0.1129	0.2716	0.0301
0.55	210	-0.2372	0.2547	0.0304
0.55	222	0.2573	0.2638	0.0304
0.55	258	-0.3374	0.2269	0.0307
0.55	270	-0.5236	0.2181	0.0318
0.55	282	0.3708	0.2478	0.0309
0.65	66	0.0291	0.267	0.03
0.65	114	0.0611	0.2755	0.03
0.65	126	-0.5129	0.2156	0.0317
0.65	138	0.386	0.1981	0.031
0.65	210	0.056	0.2379	0.03
0.65	222	-0.5682	0.1979	0.0321
0.65	246	-0.7052	0.1784	0.0332
0.65	282	0.4112	0.208	0.0311
0.75	66	-0.1429	0.2435	0.0301
0.75	78	-0.0873	0.2683	0.0301
0.75	114	-0.2325	0.2568	0.0304
0.75	126	0.3857	0.261	0.031
0.75	198	0.0791	0.2743	0.03
0.75	210	-0.0855	0.2031	0.03
0.75	222	-0.1483	0.2044	0.0301
0.75	234	-0.5894	0.2023	0.0322
0.75	258	-0.036	0.2491	0.03
0.75	270	-0.3056	0.1978	0.0306
0.75	282	-0.0007	0.2073	0.03
0.75	294	-0.3173	0.2517	0.0307
0.85	114	-0.1144	0.2117	0.0301
0.85	126	0.0192	0.2182	0.03
0.85	138	-0.1413	0.2841	0.0301
0.85	198	-0.0302	0.2594	0.03
0.85	210	0.1285	0.2351	0.0301
0.85	222	0.1397	0.2363	0.0301