CLAS Physics Database

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Measurement E151M100

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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 :	0.1205 GeV²
W :	1325 GeV
ε :	0.7217
E_beam :	1.0539 GeV
ε_L:	0.3089

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
0.55	258	-0.3532	0.6374	0.0502
0.55	270	-0.8324	0.5213	0.0993
0.65	246	-0.8079	0.4639	0.0967
0.65	258	-0.6301	0.5769	0.0777
0.65	270	0.1143	0.5743	0.0327
0.65	282	-0.2161	0.6591	0.0388
0.75	138	-1.1961	0.5918	0.1393
0.75	150	-0.1649	0.75	0.0354
0.75	246	-0.0598	0.5701	0.0308
0.75	258	0.7429	0.7002	0.0897
0.75	270	0.1505	0.5895	0.0345
0.75	282	0.6915	0.6254	0.0842
0.75	294	-0.359	0.7058	0.0507
0.85	126	0.1889	0.7187	0.0369
0.85	138	-0.4399	0.5951	0.0583
0.85	150	-0.2035	0.6513	0.0379
0.85	162	1.1685	0.6648	0.1363
0.85	186	0.8649	0.6712	0.1029
0.85	246	-0.0604	0.6962	0.0308
0.85	258	-0.088	0.5524	0.0316
0.85	270	0.5401	0.6153	0.0684
0.85	282	-0.9285	0.4495	0.1098
0.85	294	-0.2612	0.6304	0.0422
0.95	102	-0.2219	0.63	0.0392
0.95	114	1.8563	0.7637	0.2133
0.95	138	1.1937	0.6611	0.1391
0.95	162	-0.286	0.5654	0.0443
0.95	174	-0.7715	0.5057	0.0928
0.95	258	-0.3228	0.5512	0.0474