CLAS Physics Database

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Measurement E151M1896

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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 :	0.0707 GeV²
W :	1625 GeV
ε :	0.7962
E_beam :	1.9889 GeV
ε_L:	0.0592

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	282	-0.4874	0.8991	0.0421
0.45	78	1.1488	0.8017	0.0758
0.45	270	-0.7135	0.7009	0.0526
0.55	90	-0.5947	0.9955	0.0469
0.55	270	-0.0296	0.8857	0.0301
0.65	114	-0.9473	0.7362	0.0648
0.65	126	-0.8418	0.787	0.0592
0.65	150	0.021	0.9223	0.03
0.65	210	-0.9113	0.8681	0.0628
0.65	222	0.0429	0.7973	0.0301
0.65	270	1.1692	0.8509	0.0769
0.65	282	-2.3715	2.3715	0.1468
0.65	294	-0.7762	0.8543	0.0558
0.75	66	1.8994	0.7264	0.1189
0.75	114	-1.0138	0.9203	0.0684
0.75	126	-1.207	0.8209	0.0791
0.75	138	0.6379	0.8767	0.0489
0.75	210	-1.1549	0.7892	0.0761
0.75	222	-1.2818	0.7163	0.0833
0.75	234	-0.0796	0.8404	0.0304
0.75	270	1.2026	0.9163	0.0788
0.75	282	-0.2046	0.684	0.0325
0.85	102	0.3368	0.8105	0.0363
0.85	114	0.2653	0.7227	0.034
0.85	198	-0.3512	0.7119	0.0368
0.85	210	-0.3004	0.7747	0.0351
0.85	222	-1.6449	0.6267	0.1041
0.85	234	-1.658	0.5912	0.1049
0.85	246	-0.1777	0.8295	0.0319
0.95	222	0.3837	0.8201	0.038