CLAS Physics Database

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Measurement E151M1116

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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 :	0.348 GeV²
W :	1655 GeV
ε :	0.8615
E_beam :	2.999 GeV
ε_L:	0.2168

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
0.35	270	0.1676	0.8375	0.0324
0.55	90	-0.1962	0.6419	0.0333
0.55	102	-1.199	0.5771	0.0926
0.55	126	-0.4424	0.826	0.0441
0.55	270	1.4865	0.9491	0.1127
0.55	294	0.6927	0.8525	0.0588
0.55	306	-0.2055	0.6982	0.0336
0.65	90	-0.6192	0.6927	0.0543
0.65	102	-0.4447	0.6389	0.0442
0.65	114	0.0265	0.8833	0.0301
0.65	126	-1.2861	0.6334	0.0987
0.65	210	1.5353	1.008	0.1162
0.65	234	0.6432	0.8336	0.0558
0.65	246	1.5653	0.8754	0.1183
0.65	306	0.4593	0.7857	0.045
0.75	66	0.2772	0.787	0.0362
0.75	78	-0.5721	0.5382	0.0515
0.75	102	-1.2204	0.5301	0.0941
0.75	114	0.5379	0.7575	0.0495
0.75	126	-0.5968	0.7278	0.0529
0.75	210	-0.191	0.6922	0.0331
0.75	222	1.0811	0.8731	0.0845
0.75	234	0.2038	0.6269	0.0335
0.75	246	0.707	0.8112	0.0598
0.75	282	1.5465	0.9181	0.1169
0.75	294	0.3175	0.7482	0.0379
0.85	66	-0.2937	0.5435	0.0369
0.85	78	-0.3554	0.4835	0.0397
0.85	90	-0.2769	0.6473	0.0362
0.85	198	1.0573	0.8124	0.0829
0.85	210	1.619	0.9625	0.1221
0.85	222	-0.1032	0.6287	0.0309
0.85	234	0.5328	0.5829	0.0492
0.85	246	0.6307	0.5791	0.055
0.85	258	0.4116	0.6346	0.0425
0.85	270	0.6845	0.8384	0.0583
0.95	78	-0.7776	0.5994	0.0643
0.95	174	-0.7055	0.7027	0.0597
0.95	186	1.3371	0.9515	0.1022
0.95	210	0.6839	0.7287	0.0583
0.95	222	-0.1891	0.6752	0.033
0.95	234	1.4754	0.6689	0.1119
0.95	246	0.2575	0.5844	0.0354
0.95	258	0.7509	0.644	0.0625
0.95	270	-0.2634	0.5377	0.0356
0.95	282	-0.099	0.5472	0.0309
0.95	294	-0.6484	0.5154	0.0561
0.95	306	0.2116	0.7316	0.0338