CLAS Physics Database

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Measurement E151M1720

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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 :	0.2915 GeV²
W :	1265 GeV
ε :	0.9062
E_beam :	1.9889 GeV
ε_L:	0.9096

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
0.25	66	-0.0298	0.5911	0.0301
0.35	66	0.708	0.6309	0.0523
0.55	282	-0.2457	0.6048	0.0335
0.65	270	-0.3429	0.5738	0.0365
0.65	282	0.7198	0.4954	0.0529
0.65	294	-0.155	0.6272	0.0314
0.75	78	1.7583	0.6051	0.1107
0.75	90	-0.0497	0.5779	0.0302
0.75	102	0.2989	0.6154	0.035
0.75	258	0.8787	0.5911	0.0611
0.75	270	0.3158	0.6276	0.0356
0.75	282	0.0297	0.5862	0.0301
0.75	294	-0.1438	0.6208	0.0312
0.85	66	1.1365	0.6034	0.0751
0.85	78	0.2993	0.5163	0.0351
0.85	90	0.0304	0.7502	0.0301
0.85	102	1.6335	0.5529	0.1034
0.85	114	-0.1707	0.6205	0.0317
0.85	246	0.1946	0.6296	0.0322
0.85	258	1.1176	0.5686	0.0741
0.85	270	-0.0681	0.646	0.0303
0.85	282	0.2609	0.5153	0.0339
0.85	294	0.9995	0.5099	0.0676
0.95	90	0.9639	0.5044	0.0657
0.95	126	0.1503	0.5359	0.0314
0.95	150	0.4561	0.6661	0.0408
0.95	294	-0.2234	0.5545	0.0329