CLAS Physics Database

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Measurement E151M246

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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 :	1265 GeV
ε :	0.8786
E_beam :	1.3383 GeV
ε_L:	0.528

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
0.45	270	0.5401	0.4505	0.0449
0.45	282	-0.0348	0.4008	0.0385
0.55	270	-0.0698	0.3484	0.0347
0.55	282	0.3004	0.2966	0.0375
0.55	294	0.1381	0.5233	0.0365
0.65	258	0.5381	0.3899	0.0448
0.65	270	-0.0899	0.3134	0.0409
0.65	282	0.0377	0.3341	0.0311
0.65	294	-0.6131	0.335	0.0486
0.75	126	-0.8536	0.4902	0.0608
0.75	234	1.5074	0.9966	0.0956
0.75	246	-0.1602	0.3725	0.0319
0.75	258	-0.3605	0.2822	0.0375
0.75	270	-0.014	0.2959	0.0321
0.75	282	-0.1162	0.2593	0.0346
0.75	294	-0.5177	0.2549	0.0441
0.85	90	0.6354	0.4037	0.065
0.85	102	-0.1184	0.3018	0.0332
0.85	114	0.0566	0.3305	0.0328
0.85	126	-0.2297	0.2932	0.0346
0.85	138	-0.1277	0.3159	0.0324
0.85	150	-0.0702	0.3834	0.0372
0.85	162	0.457	0.4594	0.0478
0.85	246	-0.6463	0.2408	0.0538
0.85	258	-0.0748	0.2975	0.031
0.85	270	0.2077	0.3012	0.0338
0.85	282	-0.0516	0.2689	0.0349
0.85	294	0.227	0.3505	0.0336
0.95	66	-0.0855	0.4189	0.0305
0.95	78	-0.9872	0.3674	0.0681
0.95	102	0.2279	0.3525	0.0353
0.95	114	0.0666	0.2816	0.0399
0.95	126	0.0015	0.3191	0.0341
0.95	138	-0.0405	0.3124	0.0313
0.95	150	-0.2662	0.2989	0.0348
0.95	162	0.0416	0.2935	0.0446
0.95	174	-0.1115	0.304	0.0356
0.95	186	-0.7253	0.3624	0.053
0.95	198	-0.8188	0.2189	0.062
0.95	210	1.1073	0.9546	0.0731
0.95	246	0.5656	0.4407	0.0461
0.95	270	-0.8534	0.2414	0.06
0.95	294	0.2998	0.6268	0.035