CLAS Physics Database

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Measurement E151M1162

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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 :	0.101 GeV²
W :	1775 GeV
ε :	0.8592
E_beam :	2.999 GeV
ε_L:	0.0543

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	-0.7762	0.8076	0.0642
0.55	114	-0.7359	0.7587	0.0616
0.55	126	-0.2308	0.8346	0.0344
0.55	138	-1.1542	0.8175	0.0895
0.65	114	-0.7768	0.814	0.0642
0.65	126	0.2752	0.8337	0.0361
0.65	138	0.1074	0.8462	0.031
0.65	186	-0.7133	0.7484	0.0601
0.65	198	1.0825	1.0223	0.0846
0.65	222	-0.3813	0.869	0.0409
0.65	282	-0.6221	0.6622	0.0545
0.65	294	-0.8039	0.7701	0.066
0.75	90	-1.7069	0.61	0.1283
0.75	102	-0.9819	0.6123	0.0778
0.75	114	-1.8213	0.6546	0.1365
0.75	138	-1.5944	0.6725	0.1203
0.75	186	1.2372	0.8319	0.0953
0.75	198	0.3158	0.7597	0.0379
0.75	210	-0.1954	0.6085	0.0332
0.75	222	0.4184	0.7688	0.0428
0.75	234	0.7718	0.9987	0.0639
0.75	258	0.0817	0.8364	0.0306
0.75	270	1.7185	0.8486	0.1291
0.75	282	-0.4808	0.645	0.0462
0.75	294	0.0322	0.8474	0.0301
0.85	90	0.4495	0.7932	0.0445
0.85	102	-0.9516	0.5777	0.0757
0.85	114	0.406	0.6918	0.0422
0.85	126	0.2176	0.6897	0.034
0.85	138	-0.0772	0.8857	0.0305
0.85	174	0.4823	0.8664	0.0463
0.85	186	-1.0445	0.5034	0.082
0.85	198	0.3222	0.6623	0.0381
0.85	210	-0.0989	0.6418	0.0309
0.85	222	-0.5829	0.5941	0.0521
0.85	234	-0.0844	0.707	0.0306
0.85	246	-0.3215	0.797	0.0381
0.85	270	-0.0024	0.8498	0.03
0.85	282	-0.0469	0.679	0.0302
0.95	102	-0.346	0.8036	0.0392
0.95	186	-0.3375	0.7744	0.0388
0.95	198	-0.3116	0.698	0.0377
0.95	210	-0.7823	0.6	0.0646
0.95	222	-0.2249	0.7525	0.0342
0.95	234	0.7191	0.8604	0.0605