CLAS Physics Database

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Measurement E151M2874

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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 :	0.0496 GeV²
W :	1565 GeV
ε :	0.6115
E_beam :	1.3383 GeV
ε_L:	0.0408

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	138	0.4087	0.2539	0.0311
0.65	150	0.0847	0.2619	0.03
0.65	222	0.2127	0.2648	0.0303
0.65	234	-0.0777	0.2634	0.03
0.75	234	0.0355	0.2565	0.03
0.75	246	-0.5015	0.2287	0.0316
0.85	210	-0.1111	0.2766	0.0301
0.85	222	0.2875	0.2687	0.0305
0.85	246	0.0093	0.2325	0.03
0.55	210	0.0575	0.4185	0.03
0.55	222	0.1311	0.4085	0.0301
0.55	234	-0.0703	0.3849	0.03
0.65	138	0.1829	0.3929	0.0302
0.65	150	-0.1386	0.3028	0.0301
0.65	222	0.1579	0.2936	0.0302
0.65	234	-0.8644	0.1818	0.0346
0.75	234	-0.7425	0.167	0.0335
0.75	246	-0.1905	0.3246	0.0302
0.85	126	0.0228	0.387	0.03
0.85	222	-0.0355	0.3593	0.03
0.85	246	0.3686	0.3604	0.0309