CLAS Physics Database

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Measurement E151M3048

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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 :	0.2445 GeV²
W :	1475 GeV
ε :	0.8314
E_beam :	1.9889 GeV
ε_L:	0.302

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
0.25	282	0.3237	0.2353	0.0307
0.35	78	-0.2449	0.2451	0.0304
0.35	282	-0.1238	0.254	0.0301
0.35	294	0.0516	0.2335	0.03
0.45	282	-0.0916	0.2604	0.0301
0.55	102	0.3556	0.2346	0.0308
0.55	306	0.0184	0.2878	0.03
0.65	90	-0.0514	0.2752	0.03
0.65	102	-0.2899	0.2028	0.0306
0.65	114	0.7227	0.2291	0.0333
0.65	126	0.5579	0.2022	0.032
0.65	234	-0.2856	0.2381	0.0305
0.65	246	0.1942	0.2766	0.0303
0.75	90	0.4996	0.2074	0.0316
0.75	102	0.2749	0.2141	0.0305
0.75	114	0.0839	0.2278	0.03
0.75	126	0.5856	0.1793	0.0322
0.75	222	-0.1511	0.2746	0.0302
0.75	234	0.1004	0.2376	0.0301
0.75	246	-0.2064	0.2674	0.0303
0.75	258	0.0443	0.2298	0.03
0.75	270	-0.4034	0.2375	0.0311
0.85	66	0.1875	0.2689	0.0302
0.85	78	-0.0035	0.2516	0.03
0.85	102	0.6602	0.2119	0.0328
0.85	114	0.2888	0.2045	0.0306
0.85	126	-0.332	0.2294	0.0307
0.85	138	0.3108	0.229	0.0306
0.85	222	0.0152	0.2275	0.03
0.85	234	-0.0591	0.2091	0.03
0.85	246	-0.3446	0.2132	0.0308
0.85	258	-0.0752	0.2065	0.03
0.85	270	-0.4518	0.1882	0.0313
0.95	222	0.1791	0.267	0.0302
0.95	258	-0.3039	0.2439	0.0306
0.95	270	-0.1888	0.2808	0.0302
0.95	282	0.0309	0.2305	0.03
0.95	294	0.0345	0.2433	0.03