CLAS Physics Database

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Measurement E151M1427

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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 :	0.0496 GeV²
W :	1205 GeV
ε :	0.9438
E_beam :	1.3383 GeV
ε_L:	0.4272

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
0.45	282	0.5537	0.4251	0.058
0.55	270	-0.3873	0.3718	0.0399
0.55	282	0.1243	0.4231	0.0353
0.65	258	-0.4124	0.3478	0.0644
0.65	270	-0.2628	0.3355	0.0344
0.65	282	0.3764	0.3308	0.0389
0.75	258	0.3527	0.3744	0.0404
0.75	270	0.1414	0.4082	0.0341
0.85	114	-1.8361	1.8361	0.1109
0.85	126	0.9136	0.3684	0.0656
0.85	138	0.5246	0.386	0.0454
0.85	150	-0.089	0.4626	0.0312
0.85	162	-0.0164	0.352	0.0329
0.85	174	0.2909	0.3946	0.0347
0.85	186	-0.2469	0.3582	0.051
0.85	198	-0.3581	0.3813	0.0412
0.85	210	0.2983	0.3798	0.042
0.95	138	-0.2737	0.5477	0.0342
0.95	150	0.265	0.4479	0.0339
0.95	162	0.804	0.5427	0.0568
0.95	174	-0.1425	0.4476	0.0312
0.95	186	-0.3412	0.4744	0.0363
0.95	198	0.4987	0.4647	0.0423
0.85	270	-0.657	0.6384	0.0486
0.95	138	0.8155	0.4903	0.0561
0.95	150	0.5984	0.6613	0.0459
0.95	162	1.4868	1.4868	0.0915
0.95	174	0.2823	0.6338	0.0342
0.95	186	-0.0127	0.5228	0.03
0.95	198	0.0992	0.6646	0.0305