CLAS Physics Database

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Measurement E151M866

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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 :	0.1715 GeV²
W :	1535 GeV
ε :	0.8673
E_beam :	2.2596 GeV
ε_L:	0.193

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	Stat. error	Syst. error
0.45	282	-0.0433	0.4904	0.0501
0.75	114	-1.451	0.605	0.0998
0.75	126	-0.1796	0.7697	0.0322
0.75	138	-1.2635	0.6458	0.0882
0.75	234	0.8596	0.6884	0.0639
0.75	246	-0.2356	0.7497	0.0337
0.75	258	1.1556	0.8032	0.0816
0.85	78	-0.3205	0.6993	0.0366
0.85	114	-0.1502	0.7668	0.0316
0.85	222	0.8395	0.875	0.0627
0.85	234	-0.0439	0.6967	0.0301
0.85	246	0.3375	0.7566	0.0373
0.95	210	2.0747	1.461	0.1394
0.95	246	0.1769	1.0769	0.0322
0.95	258	0.5275	1.0066	0.0458
0.95	270	1.5895	1.0781	0.1085
0.65	102	-0.1042	0.9822	0.0315
0.65	126	0.8843	0.9864	0.087
0.75	102	0.4428	1.0166	0.0507
0.75	114	0.1786	1.0754	0.0342
0.75	222	0.6866	0.9378	0.0701
0.75	234	-0.5321	0.8204	0.0575
0.85	234	-0.9057	0.854	0.0888
0.85	246	-0.7988	0.7125	0.0796
0.85	258	0.3906	0.8435	0.0469
0.95	234	2.3047	2.7787	0.2148
0.95	258	-1.134	2.3165	0.1089