CLAS Physics Database

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Measurement E151M138

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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_UL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.0593 GeV²
W :	1385 GeV
ε :	0.7053
E_beam :	1.0539 GeV
ε_L:	0.1223

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Data errors	Systematic errors
0.15	42	0.0127	0.7891	0.03
0.25	42	0.4626	0.807	0.0606
0.35	30	1.3201	0.8889	0.1532
0.35	42	-0.0305	0.6451	0.0302
0.35	54	0.2041	0.9266	0.0379
0.45	30	1.2308	0.9185	0.1432
0.45	42	0.536	0.7483	0.068
0.45	246	-0.1454	0.8082	0.0343
0.45	258	-0.0324	0.741	0.0302
0.55	150	-0.7053	0.7618	0.0857
0.55	234	1.044	0.7596	0.1225
0.55	246	-0.3175	0.4803	0.047
0.55	258	-0.0709	0.5799	0.0311
0.55	270	-0.7242	0.7483	0.0877
0.65	138	-1.109	0.7249	0.1297
0.65	150	0.2551	0.7646	0.0417
0.65	162	-0.6988	0.6937	0.085
0.65	222	-0.2509	0.6053	0.0414
0.65	234	1.8142	0.6217	0.2086
0.65	246	0.1042	0.5561	0.0323
0.65	258	-1.2946	0.4276	0.1503
0.65	270	0.9833	0.6633	0.1158
0.75	138	-0.7711	0.571	0.0927
0.75	150	-0.3292	0.5583	0.048
0.75	162	-0.1453	0.7981	0.0343
0.75	174	0.3333	0.7288	0.0484
0.75	210	0.7709	0.8367	0.0927
0.75	222	-0.0625	0.7755	0.0308
0.75	234	0.4196	0.5125	0.0564
0.75	246	0.7523	0.4838	0.0907
0.75	258	0.8035	0.4767	0.0962
0.75	270	-1.0853	0.4567	0.1271
0.75	282	-2.063	0.4856	0.2366
0.85	126	0.417	0.8972	0.0561
0.85	138	0.6976	0.8618	0.0848
0.85	150	0.4543	0.6239	0.0598
0.85	174	-0.4394	0.7729	0.0583
0.85	234	0.3196	0.5849	0.0471
0.85	246	1.27	0.4446	0.1476
0.85	258	0.2502	0.4634	0.0414
0.85	270	-0.5494	0.4358	0.0693
0.85	282	1.2903	0.6994	0.1498
0.95	246	0.3244	0.5899	0.0476
0.95	258	-0.1098	0.5296	0.0325
0.95	270	-0.311	0.5588	0.0464