CLAS Physics Database

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Measurement E151M3321

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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 :	0.1205 GeV²
W :	1565 GeV
ε :	0.8673
E_beam :	2.2596 GeV
ε_L:	0.129

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
0.55	114	-0.3416	0.1736	0.0308
0.65	102	-0.149	0.2362	0.0301
0.65	114	-0.0456	0.2331	0.03
0.65	138	0.0574	0.2605	0.03
0.65	222	0.2238	0.2407	0.0303
0.65	234	0.0529	0.1734	0.03
0.75	102	0.3128	0.2476	0.0306
0.75	114	0.0372	0.1711	0.0302
0.75	126	-0.1901	0.2555	0.0302
0.75	210	-0.3419	0.2422	0.0308
0.75	222	-0.0972	0.2081	0.0301
0.75	234	0.0413	0.1652	0.0304
0.85	90	0.1785	0.24	0.0302
0.85	222	-0.2194	0.2069	0.0303
0.85	234	0.0073	0.2279	0.03
0.85	246	0.0667	0.2608	0.03
0.95	234	0.1542	0.2415	0.0302
0.95	246	-0.1714	0.239	0.0302
0.75	282	-0.0213	0.2325	0.03
0.75	294	0.0967	0.2476	0.0301
0.85	90	0.0302	0.2609	0.03
0.85	198	0.4937	0.2377	0.0316
0.85	222	0.0554	0.2064	0.03
0.85	234	0.3126	0.2085	0.0306
0.85	246	-0.3708	0.2111	0.0309
0.95	246	-0.2043	0.2343	0.0303
0.95	258	0.0451	0.2459	0.03