CLAS Physics Database

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Measurement E151M284

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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 :	0.8394
E_beam :	1.3383 GeV
ε_L:	0.3593

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	-0.5328	0.4553	0.046
0.55	270	-0.2887	0.3478	0.0541
0.65	246	-0.5978	0.3141	0.0486
0.65	258	0.0365	0.3466	0.0362
0.65	270	0.0673	0.3719	0.0313
0.65	282	-0.9787	0.3142	0.0669
0.75	102	0.399	0.5639	0.0396
0.75	114	-0.5045	0.3625	0.0438
0.75	126	0.3144	0.4256	0.0359
0.75	138	-0.1969	0.4541	0.0402
0.75	150	-1.0594	0.6162	0.0705
0.75	222	0.2654	0.8859	0.034
0.75	234	-0.6169	0.4167	0.0502
0.75	246	-0.0829	0.3272	0.0325
0.75	258	0.5161	0.3622	0.0438
0.75	270	-0.0186	0.332	0.0327
0.75	282	0.193	0.3765	0.0339
0.85	102	0.1229	0.3953	0.0328
0.85	114	0.014	0.3701	0.0304
0.85	126	-0.3807	0.3176	0.0401
0.85	138	-0.1774	0.383	0.0329
0.85	150	0.023	0.3963	0.0309
0.85	162	0.7516	0.4675	0.0552
0.85	174	0.7487	0.5053	0.0552
0.85	234	-0.3376	0.3943	0.0382
0.85	246	-0.1333	0.3149	0.0352
0.85	258	-0.368	0.3134	0.0409
0.85	270	-0.5577	0.2713	0.0483
0.85	282	-0.0701	0.2733	0.0453
0.85	294	0.9087	0.4174	0.0649
0.95	66	0.8134	0.4107	0.0584
0.95	78	-0.1793	0.3238	0.032
0.95	90	-0.4496	0.3851	0.0412
0.95	126	0.8477	0.9433	0.0592
0.95	138	0.6971	0.4332	0.0579
0.95	150	-0.8253	0.3256	0.0588
0.95	162	0.0496	0.5274	0.0302
0.95	174	-0.7488	0.468	0.0552
0.95	234	-1.0617	0.4388	0.0723
0.95	246	-0.5122	0.3398	0.0463
0.95	258	-0.4421	0.3469	0.0427
0.95	270	0.1082	0.3084	0.0387
0.95	282	-0.3678	0.3614	0.0438
0.95	294	0.6368	0.3844	0.0497