CLAS Physics Database

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Measurement E151M1648

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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 :	0.0245 GeV²
W :	1565 GeV
ε :	0.6351
E_beam :	1.3383 GeV
ε_L:	0.0215

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	30	-0.0073	0.8737	0.03
0.45	42	-0.6756	0.6707	0.0673
0.55	138	-2.8394	2.8394	0.1678
0.55	150	0.4282	1.1554	0.039
0.55	162	-0.0136	0.9092	0.03
0.55	210	0.1783	1.3009	0.0317
0.55	222	-0.4414	0.6538	0.0418
0.55	234	-1.9112	1.1032	0.1151
0.65	150	0.2184	1.3343	0.0326
0.65	210	-1.0973	1.018	0.0705
0.65	222	-0.117	1.2332	0.0308
0.65	234	-2.0718	0.8748	0.1242
0.75	222	0.8263	0.9318	0.0566
0.75	234	-0.3043	1.1863	0.0348
0.75	246	-1.8381	1.0532	0.111
0.85	222	-1.0868	0.9713	0.07
0.85	234	-0.1337	1.0934	0.031
0.85	246	1.0475	0.9503	0.0679
0.55	246	-1.679	0.8186	0.105
0.65	138	-1.6078	0.8532	0.1009
0.65	150	-1.9871	0.8253	0.1228
0.65	222	-1.0279	0.8018	0.0685
0.75	138	-0.8698	0.8686	0.0601
0.75	210	-0.1773	0.9404	0.0318
0.75	222	-0.1508	0.8781	0.0313
0.75	234	1.8445	0.7978	0.1145
0.75	246	-1.0174	0.8252	0.068
0.85	210	1.2486	0.8909	0.0806
0.85	222	-0.3318	0.8665	0.036
0.85	234	1.3151	0.6973	0.0843
0.85	246	-0.0934	0.8243	0.0305