CLAS Physics Database

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Measurement E151M2522

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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 :	0.1205 GeV²
W :	1295 GeV
ε :	0.7589
E_beam :	1.0539 GeV
ε_L:	0.3829

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
0.45	282	-0.1548	0.2571	0.0302
0.55	258	0.2625	0.2145	0.0305
0.55	270	0.0171	0.2103	0.03
0.55	282	0.4311	0.2091	0.0312
0.65	258	-0.0849	0.2254	0.03
0.65	270	-0.0945	0.2206	0.0301
0.65	282	0.0235	0.2327	0.03
0.75	246	-0.123	0.2639	0.0301
0.75	258	-0.2292	0.2041	0.0303
0.75	270	0.0572	0.2091	0.03
0.75	282	-0.4187	0.209	0.0311
0.85	114	0.4527	0.2207	0.0313
0.85	126	0.1549	0.2268	0.0302
0.85	138	0.0103	0.2568	0.03
0.85	150	0.1287	0.2548	0.0301
0.85	162	-0.063	0.2453	0.03
0.85	174	-0.1639	0.2519	0.0302
0.85	186	0.0553	0.2564	0.03
0.85	270	-0.4008	0.1846	0.0311
0.85	282	-0.0297	0.1851	0.03
0.85	294	0.0439	0.233	0.03
0.95	126	0.3909	0.2147	0.031
0.95	150	0.137	0.2498	0.0301
0.95	186	-0.4924	0.2344	0.0316
0.95	198	-0.0516	0.2437	0.03