CLAS Physics Database

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Measurement E151M2584

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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 :	0.0844 GeV²
W :	1385 GeV
ε :	0.6751
E_beam :	1.0539 GeV
ε_L:	0.1594

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	42	0.1617	0.2006	0.0302
0.55	234	-0.0597	0.2467	0.03
0.55	246	-0.0266	0.2394	0.03
0.55	258	-0.0583	0.1989	0.03
0.65	150	-0.0106	0.242	0.03
0.65	234	-0.0326	0.2105	0.03
0.65	246	-0.1279	0.1956	0.0301
0.65	258	-0.2036	0.1933	0.0303
0.65	270	-0.4287	0.2003	0.0312
0.75	138	-0.0131	0.2444	0.03
0.75	150	0.0578	0.2271	0.03
0.75	162	0.1469	0.2443	0.0301
0.75	174	0.2155	0.2253	0.0303
0.75	234	-0.4682	0.1994	0.0314
0.75	246	-0.1668	0.1848	0.0302
0.75	258	-0.2749	0.1798	0.0305
0.75	270	-0.3869	0.1802	0.031
0.85	126	0.3085	0.2473	0.0306
0.85	138	0.3949	0.2428	0.031
0.85	150	0.0536	0.2535	0.03
0.85	162	-0.0601	0.2615	0.03
0.85	174	0.0276	0.2236	0.03
0.85	234	-0.4732	0.1982	0.0315
0.85	246	-0.1068	0.1761	0.0301
0.85	258	0.2869	0.1816	0.0305
0.85	270	-0.065	0.1535	0.03
0.85	282	-0.0618	0.1907	0.03
0.95	258	0.2409	0.2093	0.0304
0.95	270	-0.3155	0.2456	0.0307