CLAS Physics Database

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Measurement E151M223

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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 :	0.0593 GeV²
W :	1235 GeV
ε :	0.9272
E_beam :	1.3383 GeV
ε_L:	0.3903

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
0.25	42	0.077	0.4623	0.0304
0.45	270	0.1496	0.4592	0.0314
0.45	282	-0.2999	0.4238	0.0353
0.55	258	-0.8229	0.4186	0.0591
0.55	270	0.0053	0.3141	0.03
0.55	282	-0.3534	0.3016	0.0371
0.65	246	0.0091	0.423	0.03
0.65	258	-0.1695	0.3	0.0318
0.65	270	0.0251	0.2787	0.03
0.65	282	-0.22	0.3084	0.0329
0.65	294	1.1922	0.4362	0.0797
0.75	234	-0.5021	0.4289	0.0432
0.75	246	-0.3419	0.361	0.0367
0.75	258	-0.3938	0.2671	0.0387
0.75	270	0.1977	0.2896	0.0324
0.75	282	0.0189	0.3526	0.03
0.85	102	0.5423	0.4669	0.045
0.85	114	0.547	0.4737	0.0452
0.85	126	-0.1379	0.3483	0.0312
0.85	138	-0.1178	0.3294	0.0309
0.85	150	0.828	0.3042	0.0594
0.85	162	0.0853	0.3686	0.0305
0.85	174	0.484	0.3867	0.0424
0.85	186	-0.1419	0.4545	0.0313
0.85	198	-0.8625	0.3673	0.0613
0.85	210	0.1646	0.4318	0.0317
0.85	234	-0.0899	0.4522	0.0305
0.85	246	0.0201	0.3316	0.03
0.85	258	0.1479	0.3317	0.0314
0.85	270	-0.0227	0.3041	0.03
0.85	282	0.089	0.3483	0.0305
0.95	114	0.1572	0.449	0.0315
0.95	126	0.2118	0.45	0.0327
0.95	138	0.4696	0.3137	0.0418
0.95	150	0.3591	0.3691	0.0373
0.95	162	-0.4959	0.3204	0.0429
0.95	174	-0.1157	0.3392	0.0308
0.95	198	-0.0782	0.377	0.0304
0.05	42	-0.3685	0.641	0.0373
0.15	42	-0.372	0.5726	0.0374
0.45	270	0.1944	0.707	0.0322
0.45	282	0.8569	1.094	0.0597
0.55	258	0.3537	0.8519	0.0368
0.55	270	-0.5338	0.3214	0.044
0.55	282	0.4666	0.4893	0.0411
0.65	258	0.2906	0.536	0.0347
0.65	270	0.3283	0.4513	0.0359
0.65	282	-0.2897	0.3849	0.0347
0.65	294	0.7296	0.8066	0.0532
0.75	234	0.4808	0.849	0.0417
0.75	246	-0.3451	0.3893	0.0365
0.75	258	0.1463	0.3979	0.0313
0.75	270	1.0817	0.5026	0.0717
0.75	282	0.1209	0.448	0.0309
0.85	102	0.3561	0.9112	0.0369
0.85	114	-0.7442	0.4311	0.0539
0.85	126	-0.4724	0.4743	0.0413
0.85	138	-0.3254	0.3976	0.0358
0.85	150	0.0145	0.5806	0.03
0.85	162	0.7112	0.7095	0.0523
0.85	174	1.0205	0.7958	0.0684
0.85	186	-0.3836	0.5301	0.0379
0.85	198	0.7961	0.8208	0.0566
0.85	210	0.5972	0.8313	0.0468
0.85	234	0.682	0.7953	0.0509
0.85	246	0.5628	0.5727	0.0453
0.85	258	-0.0743	0.4718	0.0303
0.85	270	0.1938	0.512	0.0322
0.85	282	-0.7718	0.3161	0.0553
0.95	126	-0.4266	0.4399	0.0395
0.95	138	-0.255	0.4152	0.0337
0.95	150	0.6522	0.6218	0.0494
0.95	162	0.6172	0.6197	0.0478
0.95	174	0.1923	0.6384	0.0322
0.95	186	-0.757	0.3176	0.0546