CLAS Physics Database

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Measurement E151M950

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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 :	0.1715 GeV²
W :	1235 GeV
ε :	0.977
E_beam :	2.999 GeV
ε_L:	0.8855

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
0.25	66	0.1109	0.4563	0.0311
0.35	66	0.182	0.4295	0.0328
0.35	78	-0.3844	0.5343	0.0411
0.35	294	-0.0799	0.5917	0.0306
0.45	66	0.4184	0.4813	0.0428
0.45	78	-0.1673	0.4665	0.0324
0.45	282	0.2378	0.4398	0.0347
0.45	294	0.1199	0.4906	0.0313
0.55	78	0.9888	0.6512	0.0783
0.55	270	-0.4608	0.4137	0.0451
0.55	282	0.6553	0.3704	0.0565
0.55	294	1.0265	0.5418	0.0808
0.65	78	-0.292	0.5841	0.0368
0.65	90	-0.8309	0.511	0.0677
0.65	270	-0.4332	0.326	0.0436
0.65	282	-0.4102	0.2871	0.0424
0.65	294	-0.2732	0.3695	0.036
0.75	66	-0.587	0.5679	0.0524
0.75	78	0.4985	0.4334	0.0472
0.75	90	-0.6443	0.357	0.0558
0.75	102	-0.2557	0.4526	0.0353
0.75	258	-0.2572	0.3812	0.0354
0.75	270	-0.0865	0.3402	0.0307
0.75	282	0.003	0.3049	0.03
0.75	294	0.0171	0.3287	0.03
0.85	66	-0.6779	0.3841	0.0579
0.85	78	0.4197	0.3608	0.0429
0.85	90	0.2137	0.3179	0.0338
0.85	102	0.3616	0.3275	0.04
0.85	114	1.1787	0.4243	0.0912
0.85	126	1.6023	0.7755	0.1209
0.85	234	-0.6477	0.5964	0.056
0.85	246	-0.3118	0.4356	0.0377
0.85	258	-0.7138	0.323	0.0602
0.85	270	0.1391	0.3207	0.0317
0.85	282	-0.1736	0.3421	0.0326
0.85	294	0.1606	0.3938	0.0322
0.95	42	-0.8326	0.4841	0.0678
0.95	54	0.3898	0.4631	0.0414
0.95	66	1.0207	0.3773	0.0804
0.95	78	-0.0627	0.3418	0.0303
0.95	90	0.3545	0.3799	0.0396
0.95	102	-0.0564	0.3573	0.0303
0.95	114	0.0327	0.3303	0.0301
0.95	126	0.0576	0.3954	0.0303
0.95	138	-0.2584	0.3962	0.0355
0.95	150	-0.328	0.4164	0.0384
0.95	162	0.4735	0.559	0.0458
0.95	174	-0.1485	0.4865	0.0319
0.95	198	-0.6379	0.5031	0.0554
0.95	210	0.157	0.5447	0.0321
0.95	222	-0.8736	0.5111	0.0705
0.95	234	0.8732	0.6167	0.0705
0.95	246	-0.1427	0.4335	0.0318
0.95	258	-0.0779	0.4409	0.0305
0.95	270	0.0944	0.3968	0.0308
0.95	282	0.174	0.4705	0.0326
0.95	306	0.2163	0.6171	0.0339