CLAS Physics Database

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Measurement E151M1859

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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 :	0.0291 GeV²
W :	1565 GeV
ε :	0.8567
E_beam :	1.9889 GeV
ε_L:	0.0344

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	78	-1.0117	0.8146	0.0683
0.35	270	0.8114	0.8219	0.0576
0.35	282	0.1842	0.8145	0.032
0.45	78	-0.717	0.8627	0.0528
0.45	270	-0.8497	0.8692	0.0596
0.55	90	-0.8433	0.9617	0.0593
0.55	138	-0.3318	1.0213	0.0361
0.55	222	0.4852	0.8542	0.042
0.55	270	-0.9578	0.8757	0.0653
0.55	282	0.3159	0.7991	0.0356
0.65	126	-1.1023	0.8917	0.0732
0.65	138	-0.5954	0.6753	0.0469
0.65	198	-1.1171	0.8731	0.074
0.65	210	-0.2495	0.7201	0.0336
0.65	222	0.5434	0.7815	0.0445
0.65	270	0.9617	0.8143	0.0655
0.75	78	0.1917	0.8836	0.0322
0.75	126	2.184	0.7813	0.1357
0.75	138	0.1479	0.8667	0.0313
0.75	210	-0.807	0.7114	0.0574
0.75	222	-0.4183	0.8433	0.0393
0.75	234	-0.3524	0.8044	0.0368
0.75	270	-0.1556	0.9039	0.0314
0.75	282	-0.4891	0.7756	0.0422
0.85	114	-0.2051	0.8498	0.0325
0.85	126	-0.6342	0.8408	0.0488
0.85	210	1.1274	0.6793	0.0746
0.85	222	1.5964	0.7803	0.1013
0.85	234	-0.9342	0.7051	0.0641