CLAS Physics Database

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Measurement E151M2520

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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 :	1295 GeV
ε :	0.796
E_beam :	1.0539 GeV
ε_L:	0.3049

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
0.05	42	0.2657	0.253	0.0305
0.15	42	-0.1351	0.2269	0.0301
0.25	30	0.4039	0.2243	0.0311
0.25	42	0.1356	0.2404	0.0301
0.35	42	-0.2774	0.2347	0.0305
0.45	270	0.0498	0.2521	0.03
0.45	282	0.1302	0.235	0.0301
0.55	246	0.3269	0.2176	0.0307
0.55	258	0.0812	0.1775	0.03
0.55	270	-0.0954	0.1865	0.0301
0.55	282	0.0886	0.2069	0.0301
0.65	234	-0.1519	0.1976	0.0302
0.65	246	0.1345	0.1584	0.0301
0.65	258	0.1805	0.1494	0.0302
0.65	270	0.019	0.141	0.03
0.65	282	-0.257	0.1719	0.0304
0.75	126	-0.0496	0.2462	0.03
0.75	138	0.052	0.1836	0.03
0.75	150	0.1393	0.1793	0.0301
0.75	162	-0.0387	0.2472	0.03
0.75	234	0.0069	0.1867	0.03
0.75	246	-0.0917	0.1585	0.0301
0.75	258	-0.0758	0.1365	0.03
0.75	270	-0.1696	0.1501	0.0302
0.75	282	-0.0497	0.16	0.03
0.85	114	0.3889	0.187	0.031
0.85	126	-0.0815	0.164	0.03
0.85	138	-0.1518	0.1522	0.0302
0.85	150	-0.0564	0.1788	0.03
0.85	162	-0.0394	0.194	0.03
0.85	174	0.0362	0.1873	0.03
0.85	186	0.1523	0.1793	0.0302
0.85	198	-0.2258	0.2245	0.0303
0.85	234	-0.3891	0.1968	0.031
0.85	246	0.4413	0.1658	0.0313
0.85	258	-0.1028	0.1455	0.0301
0.85	270	-0.1956	0.1543	0.0303
0.85	282	0.1281	0.1497	0.0301
0.85	294	0.0894	0.2542	0.0301
0.95	90	0.3496	0.2329	0.0308
0.95	102	0.1141	0.208	0.0301
0.95	114	-0.0819	0.2558	0.03
0.95	126	-0.0187	0.2255	0.03
0.95	138	0.035	0.2052	0.03
0.95	150	0.2875	0.2089	0.0305
0.95	162	-0.2019	0.2007	0.0303
0.95	174	0.0124	0.2293	0.03
0.95	186	0.1463	0.2097	0.0301
0.95	234	-0.2875	0.2502	0.0305
0.95	246	-0.1483	0.2316	0.0301
0.95	258	0.046	0.2565	0.03
0.95	270	-0.3512	0.2201	0.0308