CLAS Physics Database

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Measurement E151M260

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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 :	0.0496 GeV²
W :	1295 GeV
ε :	0.9028
E_beam :	1.3383 GeV
ε_L:	0.2202

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
0.15	42	0.6218	0.44	0.0487
0.35	30	0.6801	0.4272	0.0575
0.55	258	0.3624	0.3353	0.0479
0.55	270	-0.346	0.2786	0.0662
0.65	138	0.8669	0.5668	0.0615
0.65	234	-0.6802	0.3688	0.0681
0.65	246	-0.1842	0.2776	0.0369
0.65	258	-0.3124	0.2494	0.0356
0.65	270	-0.2424	0.2578	0.0378
0.65	282	-0.3343	0.4615	0.0407
0.75	114	0.4626	0.3758	0.0488
0.75	126	0.1764	0.3412	0.0324
0.75	138	0.1773	0.3369	0.041
0.75	150	-0.0794	0.3665	0.0332
0.75	162	-0.8019	0.3129	0.0595
0.75	174	-0.7003	0.6607	0.0518
0.75	222	-0.0972	0.5443	0.0306
0.75	234	-0.0752	0.3036	0.0362
0.75	246	-0.1442	0.2552	0.0384
0.75	258	-0.0247	0.2223	0.0407
0.75	270	-0.3402	0.2542	0.0365
0.75	282	-0.0323	0.3406	0.0306
0.85	114	-0.4438	0.3381	0.0407
0.85	126	0.2617	0.2843	0.0383
0.85	138	0.459	0.3626	0.0416
0.85	150	-0.3257	0.3212	0.0415
0.85	162	-0.0461	0.2871	0.0474
0.85	174	0.3898	0.3946	0.0385
0.85	186	0.0597	0.3249	0.0786
0.85	210	0.6496	0.9435	0.0493
0.85	222	0.4431	0.4553	0.0418
0.85	234	-0.0709	0.3103	0.0308
0.85	246	-0.1001	0.2268	0.0365
0.85	258	0.045	0.2334	0.0395
0.85	270	-0.2955	0.2465	0.0372
0.85	282	-0.2277	0.2456	0.0452
0.95	102	0.1658	0.3968	0.0407
0.95	114	-0.915	0.371	0.0627
0.95	126	-0.0883	0.3479	0.0341
0.95	138	0.4644	0.907	0.041
0.95	150	-0.3023	0.4482	0.0354
0.95	162	-0.1611	0.4348	0.0316
0.95	174	-0.3072	0.4381	0.0355
0.95	186	1.1445	0.4052	0.077
0.95	234	0.9034	0.7391	0.0621
0.95	246	-0.7231	0.2948	0.0645
0.95	258	0.2735	0.3604	0.036
0.95	270	-0.5609	0.2859	0.0458