CLAS Physics Database

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Measurement E151M2231

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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 :	0.496 GeV²
W :	1385 GeV
ε :	0.9169
E_beam :	2.999 GeV
ε_L:	0.6807

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	90	1.6049	0.9183	0.1202
0.55	78	-0.2524	0.7151	0.0351
0.55	90	1.2528	0.8377	0.0957
0.55	102	1.8319	0.7545	0.1362
0.55	270	1.5768	0.8905	0.1182
0.65	66	1.1073	0.8016	0.0857
0.65	78	-0.5253	0.6908	0.0485
0.65	90	0.403	0.7311	0.0419
0.65	102	-0.7912	0.7307	0.0647
0.65	258	-0.5977	0.8864	0.0527
0.65	270	-0.6615	0.873	0.0566
0.65	282	-0.2214	0.7534	0.034
0.65	294	1.1531	0.7568	0.0888
0.75	66	0.2878	0.8212	0.0365
0.75	78	0.6165	0.7162	0.0538
0.75	90	0.023	0.6494	0.03
0.75	102	-0.1538	0.8196	0.032
0.75	114	-1.0065	0.8558	0.0789
0.75	234	-1.653	0.7574	0.1236
0.75	246	0.9011	0.6733	0.0719
0.75	258	0.4181	0.6868	0.0427
0.75	270	-0.6735	0.6446	0.0573
0.75	282	1.023	0.7691	0.08
0.75	294	-0.4638	0.8285	0.0451
0.75	306	-0.943	0.7667	0.0747
0.85	42	1.2948	0.7173	0.0986
0.85	78	0.0112	0.705	0.03
0.85	90	-0.6596	0.7986	0.0565
0.85	102	0.8083	0.864	0.0658
0.85	126	0.5981	0.9614	0.0527
0.85	222	0.3991	0.7352	0.0417
0.85	234	0.4248	0.777	0.043
0.85	246	-0.8706	0.7843	0.0699
0.85	258	0.2934	0.7306	0.0368
0.85	270	-0.2657	0.59	0.0357
0.85	282	0.5252	0.6767	0.0485
0.85	294	0.2828	0.6161	0.0363
0.85	306	-0.2966	0.5925	0.0369
0.85	318	-1.3506	0.627	0.1024
0.85	330	0.3023	0.7115	0.0372
0.95	90	-0.595	0.8045	0.0525
0.95	222	0.9324	0.8504	0.074
0.95	234	-0.4224	0.7216	0.0429
0.95	246	-0.5679	0.7882	0.0509
0.95	258	-0.1313	0.8199	0.0315
0.95	270	-0.0149	0.7387	0.03
0.95	282	-0.0244	0.7729	0.0301
0.95	294	0.1812	0.7155	0.0328
0.95	306	1.0006	0.6226	0.0785
0.95	318	0.3363	0.683	0.0387
0.95	330	-0.2398	0.6923	0.0347