CLAS Physics Database

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Measurement E151M2972

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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 :	0.2915 GeV²
W :	1325 GeV
ε :	0.8864
E_beam :	1.9889 GeV
ε_L:	0.6685

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
0.65	270	-0.1995	0.2308	0.0303
0.65	282	-0.3469	0.2458	0.0308
0.75	90	0.265	0.2453	0.0305
0.75	102	0.4539	0.1991	0.0313
0.75	258	0.3295	0.2227	0.0307
0.75	270	-0.0417	0.2649	0.03
0.75	282	0.0375	0.2676	0.03
0.75	294	0.4923	0.1914	0.0316
0.85	78	0.0296	0.197	0.03
0.85	90	0.2377	0.2147	0.0304
0.85	102	-0.1134	0.2335	0.0301
0.85	114	0.255	0.2481	0.0304
0.85	126	-0.0865	0.262	0.03
0.85	234	-0.0064	0.2441	0.03
0.85	246	-0.4134	0.2903	0.0311
0.85	258	-0.1507	0.2098	0.0302
0.85	270	-0.5171	0.2316	0.0317
0.85	282	-0.195	0.2382	0.0303
0.85	294	-0.4658	0.2211	0.0314
0.85	306	0.2487	0.2245	0.0304
0.95	90	0.0171	0.2683	0.03
0.95	102	-0.5994	0.219	0.0323
0.95	114	0.0588	0.3141	0.03
0.95	126	0.1744	0.2727	0.0302
0.95	246	-0.0658	0.2806	0.03
0.95	270	0.1627	0.2243	0.0302
0.95	282	0.3586	0.2379	0.0308
0.95	294	0.1484	0.2327	0.0301
0.95	306	0.4775	0.2476	0.0315