CLAS Physics Database

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Measurement E151M1472

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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 :	0.2445 GeV²
W :	1265 GeV
ε :	0.8039
E_beam :	1.3383 GeV
ε_L:	0.7443

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
0.55	270	0.1424	0.5559	0.0542
0.65	258	0.4447	0.7218	0.0401
0.65	282	0.5909	0.6814	0.0464
0.75	114	0.101	0.6834	0.0306
0.75	258	-0.2813	0.7233	0.0344
0.75	270	0.4152	0.6985	0.039
0.75	294	-0.9638	0.6697	0.0651
0.85	90	0.7066	0.718	0.0519
0.85	114	-0.2405	0.6725	0.0333
0.85	126	0.7145	0.6456	0.0523
0.85	138	0.9036	0.6895	0.0619
0.85	282	-0.7024	0.6632	0.0517
0.95	114	0.4494	0.5787	0.0403
0.95	138	1.0124	0.576	0.0677
0.95	150	0.679	0.5721	0.0506
0.55	282	0.5995	0.7902	0.046
0.65	258	1.368	0.7745	0.085
0.65	270	-0.0916	0.8908	0.0305
0.65	282	0.7823	0.859	0.0545
0.65	294	-0.3196	0.8451	0.0353
0.75	246	-1.6889	0.4633	0.1027
0.75	258	0.3484	0.9844	0.0362
0.75	282	-1.1981	0.7334	0.0759
0.85	90	-0.5043	0.9478	0.042
0.85	102	-0.0057	0.9438	0.03
0.85	126	1.689	0.7758	0.1027
0.85	138	-0.0215	0.94	0.03
0.85	270	-0.8947	0.7403	0.0601
0.85	282	0.3424	0.9186	0.036
0.85	294	1.1167	0.9657	0.0715