CLAS Physics Database

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Measurement E151M2459

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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 :	0.101 GeV²
W :	1205 GeV
ε :	0.8605
E_beam :	1.0539 GeV
ε_L:	0.6763

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
0.35	282	-0.4111	0.2142	0.0311
0.35	294	0.3108	0.2074	0.0306
0.45	270	-0.0813	0.2323	0.03
0.45	282	0.0419	0.1895	0.03
0.45	294	0.4203	0.2243	0.0312
0.55	270	0.0517	0.1922	0.03
0.55	282	0.0851	0.1763	0.03
0.55	294	-0.0313	0.2202	0.03
0.65	258	-0.01	0.2174	0.03
0.65	270	0.238	0.1774	0.0304
0.65	282	-0.0882	0.1567	0.0301
0.75	270	-0.1308	0.2241	0.0301
0.75	282	-0.0561	0.2015	0.03
0.75	294	0.4306	0.1976	0.0312
0.85	138	0.6118	0.2281	0.0324
0.85	150	0.1873	0.2276	0.0302
0.85	162	-0.2524	0.2012	0.0304
0.85	186	-0.3072	0.2438	0.0306
0.85	198	0.5659	0.1994	0.0321
0.85	210	-0.4835	0.2226	0.0315
0.85	222	0.0671	0.218	0.03
0.95	126	0.1708	0.217	0.0302
0.95	138	0.0671	0.1909	0.03
0.95	150	0.0268	0.1886	0.03
0.95	162	-0.0368	0.2103	0.03
0.95	174	-0.2601	0.205	0.0304
0.95	186	-0.1596	0.196	0.0302
0.95	198	0.0889	0.2438	0.0301
0.95	210	-0.1264	0.233	0.0301
0.95	222	-0.1122	0.24	0.0301
0.95	234	0.2869	0.2466	0.0305