CLAS Physics Database

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Measurement E151M2546

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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 :	0.0023 GeV²
W :	1355 GeV
ε :	0.8132
E_beam :	1.0539 GeV
ε_L:	0.0071

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	42	0.556	0.231	0.032
0.55	42	-0.1597	0.2095	0.0302
0.55	54	-0.4985	0.196	0.0316
0.55	222	0.1449	0.2014	0.0301
0.55	234	0.1644	0.2279	0.0302
0.55	246	0.0096	0.1697	0.03
0.65	30	-0.2479	0.2355	0.0304
0.65	42	0.0719	0.2057	0.03
0.65	54	-0.4521	0.1637	0.0313
0.65	162	-0.0441	0.2418	0.03
0.65	210	-0.0505	0.2539	0.03
0.65	222	-0.022	0.221	0.03
0.65	234	0.2072	0.1475	0.0303
0.65	246	-0.1621	0.1529	0.0302
0.65	258	-0.3372	0.2434	0.0307
0.75	42	-0.4768	0.1998	0.0315
0.75	54	-0.126	0.2244	0.0301
0.75	150	-0.0675	0.2123	0.03
0.75	210	0.5164	0.2189	0.0317
0.75	222	-0.0041	0.219	0.03
0.75	234	0.2324	0.1759	0.0304
0.75	246	-0.4629	0.1787	0.0314
0.75	258	-0.262	0.2464	0.0305
0.85	138	-0.0264	0.2313	0.03
0.85	222	0.1098	0.1803	0.0301
0.85	234	-0.3033	0.1882	0.0306
0.85	246	0.4067	0.1913	0.0311