CLAS Physics Database

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Measurement E151M1701

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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 :	0.1205 GeV²
W :	1235 GeV
ε :	0.956
E_beam :	1.9889 GeV
ε_L:	0.6926

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
0.35	66	-0.1118	0.6137	0.0308
0.45	66	0.6952	0.6272	0.0517
0.45	78	0.1552	0.5577	0.0314
0.45	282	0.0678	0.5489	0.0303
0.55	78	-0.5674	0.547	0.0456
0.55	270	-0.1316	0.4607	0.031
0.55	282	-0.6207	0.5041	0.0481
0.65	258	0.3548	0.6402	0.0369
0.65	270	-0.6217	0.372	0.0482
0.65	282	0.5407	0.4793	0.0444
0.75	102	-0.5223	0.6111	0.0436
0.75	258	-0.2966	0.4906	0.035
0.75	270	-0.7914	0.3979	0.0566
0.75	282	0.6242	0.4445	0.0483
0.85	90	-0.5407	0.5235	0.0444
0.85	102	0.3738	0.5009	0.0376
0.85	114	0.5388	0.4113	0.0443
0.85	126	-0.0682	0.4445	0.0303
0.85	138	-0.2523	0.5831	0.0337
0.85	258	-0.4746	0.4657	0.0416
0.85	270	-0.1382	0.4823	0.0311
0.95	90	0.8501	0.4435	0.0596
0.95	102	0.2167	0.4313	0.0327
0.95	114	0.8932	0.4162	0.0619
0.95	126	-0.411	0.3979	0.039
0.95	138	-0.2407	0.4928	0.0334
0.95	150	1.1361	0.3719	0.0751
0.95	162	-0.7072	0.4586	0.0523
0.95	174	-0.4667	0.5024	0.0412
0.95	186	1.1877	0.4477	0.078
0.95	246	0.3632	0.5289	0.0372