CLAS Physics Database

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Measurement E151M643

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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 :	0.0844 GeV²
W :	1565 GeV
ε :	0.8353
E_beam :	1.9889 GeV
ε_L:	0.0909

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	294	1.4339	0.7794	0.0927
0.35	78	-1.7138	0.5191	0.109
0.35	270	0.9129	0.8035	0.0634
0.35	282	-0.328	0.7677	0.0361
0.45	66	-1.8112	0.5558	0.1148
0.45	78	-0.5341	0.7016	0.0444
0.45	270	-0.1365	0.7211	0.0311
0.45	282	-0.249	0.639	0.0336
0.55	78	0.6737	0.8763	0.051
0.55	114	-1.7906	0.5691	0.1136
0.55	126	-1.2652	0.6552	0.083
0.55	138	-0.6892	0.6817	0.0517
0.55	234	0.7916	0.8344	0.057
0.55	258	-1.1484	0.6469	0.0764
0.55	270	0.2167	0.7925	0.0328
0.55	282	1.3175	0.7941	0.086
0.65	114	0.6949	0.6998	0.052
0.65	126	-0.812	0.5991	0.058
0.65	138	-1.2739	0.5949	0.0835
0.65	198	1.7622	0.8276	0.1119
0.65	210	1.241	0.8399	0.0816
0.65	222	-0.3219	0.6245	0.0359
0.65	234	0.3874	0.7097	0.0382
0.65	282	0.639	0.8221	0.0493
0.65	294	-0.099	0.6278	0.0306
0.75	114	-0.9181	0.6911	0.0637
0.75	126	-1.5173	0.4591	0.0975
0.75	138	1.0702	0.8139	0.072
0.75	150	-1.2654	0.5994	0.083
0.75	210	-0.0348	0.647	0.0301
0.75	222	-0.1466	0.6154	0.0313
0.75	234	-0.1797	0.5651	0.0319
0.75	246	2.2391	0.6011	0.1402
0.75	282	-0.3902	0.5115	0.0383
0.75	294	-0.0969	0.5737	0.0306
0.85	102	0.4953	0.6981	0.0426
0.85	114	-0.1332	0.7447	0.0311
0.85	198	1.431	0.8802	0.0925
0.85	210	-0.0673	0.6947	0.0303
0.85	222	0.27	0.673	0.0342
0.85	234	0.2893	0.5361	0.0348
0.85	246	1.642	0.6163	0.1048
0.95	114	0.1164	0.7595	0.0308
0.95	222	1.6362	0.6801	0.1045
0.95	246	-0.087	0.667	0.0305