CLAS Physics Database

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Measurement E151M1604

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.1715 GeV²
W :	1475 GeV
ε :	0.6422
E_beam :	1.3383 GeV
ε_L:	0.1803

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.65	234	-1.5987	0.8485	0.1004
0.65	246	0.8097	0.8014	0.0571
0.75	126	-0.7296	0.9284	0.053
0.75	234	1.3353	0.7994	0.0855
0.75	246	0.0145	0.7976	0.03
0.75	258	0.9826	0.7763	0.0661
0.75	270	0.0105	0.8381	0.03
0.85	126	-1.1336	0.8814	0.0743
0.85	138	-0.2555	0.8829	0.0337
0.85	246	-0.3565	0.9299	0.0368
0.85	258	-0.6476	0.7857	0.0491
0.85	270	-0.581	0.7612	0.046
0.95	246	1.2926	0.7733	0.0831
0.95	282	1.1228	0.706	0.0737
0.55	246	0.0423	1.1399	0.0301
0.65	234	2.4545	2.4545	0.1458
0.65	246	-0.4613	0.9619	0.0402
0.65	258	-1.3145	0.8464	0.0821
0.75	246	0.9749	1.0289	0.0641
0.75	258	2.4897	2.4897	0.1478
0.75	270	-1.3623	0.949	0.0847
0.85	234	-0.0198	1.0577	0.03
0.85	246	-0.297	0.8776	0.0346
0.85	258	0.8435	0.9625	0.0575
0.85	270	-0.3116	0.96	0.035
0.85	282	1.8545	0.7204	0.1119
0.95	270	-0.0821	0.8168	0.0304