CLAS Physics Database

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Measurement E151M3032

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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 :	0.205 GeV²
W :	1445 GeV
ε :	0.8619
E_beam :	1.9889 GeV
ε_L:	0.3118

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
0.15	66	0.6135	0.208	0.0324
0.25	294	0.2103	0.2239	0.0303
0.35	66	0.2812	0.2146	0.0305
0.35	282	-0.2395	0.2597	0.0304
0.35	294	-0.0162	0.2728	0.03
0.45	66	0.0019	0.2533	0.03
0.45	78	0.0736	0.2548	0.03
0.45	282	0.001	0.2485	0.03
0.55	114	0.0635	0.2618	0.03
0.55	282	-0.3344	0.2561	0.0307
0.65	102	0.3452	0.2412	0.0308
0.65	114	0.1359	0.2103	0.0301
0.65	126	-0.127	0.2499	0.0301
0.65	246	0.5169	0.1882	0.0317
0.65	270	-0.2315	0.2686	0.0304
0.75	90	0.0138	0.247	0.03
0.75	102	-0.0005	0.2026	0.03
0.75	114	0.07	0.2172	0.03
0.75	126	0.0843	0.234	0.03
0.75	138	-0.2349	0.2652	0.0304
0.75	210	0.2753	0.2707	0.0305
0.75	222	0.4223	0.2234	0.0312
0.75	234	0.0316	0.2322	0.03
0.75	246	0.0286	0.2583	0.03
0.75	258	-0.1362	0.2272	0.0301
0.75	270	0.2359	0.2207	0.0304
0.85	66	-0.1695	0.2734	0.0302
0.85	78	-0.1241	0.2524	0.0301
0.85	102	0.1666	0.2426	0.0302
0.85	114	-0.1279	0.2246	0.0301
0.85	126	0.0055	0.228	0.03
0.85	138	-0.1009	0.2628	0.0301
0.85	210	0.1807	0.2585	0.0302
0.85	222	-0.4724	0.1989	0.0315
0.85	234	0.3339	0.2099	0.0307
0.85	246	-0.1909	0.2002	0.0302
0.85	258	-0.3744	0.1826	0.0309
0.85	270	0.0824	0.2105	0.03
0.85	282	0.1177	0.1853	0.0301
0.95	234	-0.0286	0.2622	0.03
0.95	246	-0.5407	0.2109	0.0319
0.95	258	0.2375	0.2301	0.0304
0.95	270	-0.1442	0.2033	0.0301
0.95	282	-0.3578	0.1865	0.0308
0.95	294	-0.1844	0.2538	0.0302