CLAS Physics Database

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Measurement E151M330

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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 :	0.0143 GeV²
W :	1415 GeV
ε :	0.8369
E_beam :	1.3383 GeV
ε_L:	0.0328

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	42	0.1237	0.6169	0.031
0.55	126	-0.6692	0.6073	0.0512
0.55	138	0.3024	0.7108	0.0354
0.55	222	0.3503	0.6426	0.037
0.55	234	-0.3923	0.5627	0.0386
0.55	246	-0.4703	0.5528	0.0418
0.65	126	-1.8652	0.5028	0.1193
0.65	138	-0.4726	0.5458	0.0419
0.65	210	0.3464	0.5353	0.0369
0.65	222	0.2327	0.4648	0.0333
0.65	234	-0.2305	0.4825	0.0332
0.65	246	-0.3333	0.5634	0.0364
0.75	126	0.1635	0.638	0.0317
0.75	138	-0.3758	0.6066	0.038
0.75	150	-0.2222	0.6259	0.033
0.75	222	0.3621	0.5054	0.0375
0.75	234	0.2797	0.461	0.0346
0.75	246	0.4933	0.5263	0.0428
0.85	126	-0.412	0.6623	0.0394
0.85	138	-0.9482	0.5272	0.0659
0.85	222	0.3328	0.5038	0.0364
0.85	234	0.6811	0.4838	0.0518
0.85	246	-0.7002	0.5519	0.0527
0.45	42	1.1949	1.161	0.078
0.45	54	-0.0884	1.0878	0.0305
0.55	30	0.067	0.9957	0.0303
0.55	138	-0.9601	0.721	0.0651
0.55	222	-0.0934	0.6874	0.0305
0.55	234	2.2015	1.0746	0.1359
0.55	246	-0.365	0.6569	0.0372
0.65	126	-0.2186	0.9208	0.0328
0.65	138	-1.3425	0.5637	0.0862
0.65	150	0.2573	0.9132	0.0338
0.65	198	0.1084	0.9993	0.0307
0.65	210	0.7697	0.8254	0.0552
0.65	222	0.7997	0.94	0.0567
0.65	234	-0.1127	0.6141	0.0308
0.65	246	0.4019	0.9482	0.0385
0.75	138	-0.7792	0.8252	0.0557
0.75	150	0.1764	1.037	0.0318
0.75	210	-0.5927	0.7084	0.0466
0.75	222	-0.3373	0.6076	0.0362
0.75	234	0.0462	0.6622	0.0301
0.75	246	0.438	1.1736	0.0399
0.85	210	2.0968	1.0831	0.1298
0.85	222	-0.4289	0.5816	0.0396
0.85	234	1.021	0.7401	0.0684
0.85	246	0.1553	0.7041	0.0314
0.85	258	-1.4667	0.4279	0.0933