CLAS Physics Database

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Measurement E151M2541

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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 :	0.0707 GeV²
W :	1325 GeV
ε :	0.7757
E_beam :	1.0539 GeV
ε_L:	0.216

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	30	0.0742	0.2141	0.03
0.35	42	-0.0039	0.2107	0.03
0.45	42	-0.7043	0.18	0.0331
0.45	270	-0.0548	0.2214	0.03
0.55	234	-0.1378	0.2591	0.0301
0.55	246	0.1252	0.1958	0.0301
0.55	258	0.0008	0.1587	0.03
0.55	270	-0.1257	0.1809	0.0301
0.65	138	0.3337	0.2514	0.0307
0.65	234	-0.0736	0.2048	0.03
0.65	246	-0.1642	0.1498	0.0302
0.65	258	0.1381	0.15	0.0301
0.65	270	0.111	0.1519	0.0301
0.75	126	0.304	0.2148	0.0306
0.75	138	-0.3597	0.1796	0.0309
0.75	150	0.2998	0.1634	0.0306
0.75	162	-0.097	0.1971	0.0301
0.75	174	-0.2331	0.248	0.0304
0.75	186	0.2007	0.2224	0.0303
0.75	234	-0.0888	0.1743	0.0301
0.75	246	-0.135	0.1469	0.0301
0.75	258	0.1529	0.153	0.0302
0.75	270	0.0126	0.1384	0.03
0.75	282	-0.3032	0.176	0.0306
0.85	126	0.0416	0.1889	0.03
0.85	138	0.166	0.1488	0.0302
0.85	150	0.1995	0.1777	0.0303
0.85	162	-0.0214	0.1968	0.03
0.85	174	0.0232	0.1792	0.03
0.85	186	0.1799	0.2496	0.0302
0.85	198	-0.1778	0.2389	0.0302
0.85	234	-0.2668	0.1744	0.0305
0.85	246	-0.0875	0.1479	0.0301
0.85	258	-0.0086	0.146	0.03
0.85	270	0.0598	0.1469	0.03
0.85	282	0.1522	0.1794	0.0302
0.85	294	-0.0344	0.2511	0.03
0.95	102	-0.2288	0.2205	0.0303
0.95	114	0.7015	0.1649	0.0331
0.95	126	0.1684	0.231	0.0302
0.95	138	-0.0481	0.2336	0.03
0.95	150	-0.0037	0.2172	0.03
0.95	162	0.188	0.246	0.0302
0.95	174	-0.2787	0.2413	0.0305
0.95	270	0.0023	0.2191	0.03