CLAS Physics Database

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Measurement E151M2047

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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 :	0.205 GeV²
W :	1445 GeV
ε :	0.8968
E_beam :	2.2596 GeV
ε_L:	0.3245

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	102	0.2679	0.6682	0.0347
0.65	114	2.6644	0.999	0.2467
0.65	246	0.3436	0.6659	0.0494
0.75	90	0.6503	0.7199	0.0519
0.75	102	-0.3928	0.5804	0.043
0.75	114	-0.3743	0.6256	0.059
0.75	126	0.1919	0.7189	0.041
0.75	138	-3.4342	3.4342	0.317
0.75	234	0.1224	0.8267	0.031
0.75	246	0.9459	0.5969	0.1117
0.75	258	-0.3611	0.5789	0.0918
0.85	114	-1.6102	1.4271	0.151
0.85	246	0.4961	1.1014	0.0546
0.85	258	-0.0541	1.1034	0.0304
0.85	270	-0.6435	1.1145	0.0663
0.95	246	1.5311	3.2149	0.1439
0.95	270	2.677	3.3871	0.2478
0.95	282	-2.1739	2.8325	0.202
0.75	270	0.3629	0.8816	0.0382
0.85	66	0.2315	0.8313	0.0336
0.85	102	0.9142	0.8524	0.0666
0.85	114	-0.6054	0.8328	0.0495
0.85	126	-0.2599	0.7619	0.0344
0.85	222	-0.5365	0.9431	0.046
0.85	246	-1.4448	0.7384	0.0987
0.85	258	0.8464	0.7365	0.0627
0.85	282	0.5673	0.862	0.0476
0.95	222	2.3983	1.4558	0.1589
0.95	258	1.4422	1.3386	0.0985
0.95	270	2.0013	1.1706	0.1336
0.95	282	-0.1585	1.0513	0.0317