CLAS Physics Database

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Measurement E151M2301

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.348 GeV²
W :	1565 GeV
ε :	0.8936
E_beam :	2.999 GeV
ε_L:	0.2981

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.25	282	-1.2531	0.9943	0.0957
0.35	282	-1.2966	0.8178	0.0987
0.45	90	0.2038	0.9262	0.0334
0.45	114	-0.6852	1.0008	0.058
0.45	282	0.2695	0.9578	0.0358
0.55	90	0.0494	0.8499	0.0302
0.55	102	0.1991	1.0054	0.0333
0.55	114	0.8766	0.9279	0.0703
0.65	90	-0.5054	0.7233	0.0474
0.65	102	1.2528	0.7947	0.0957
0.65	114	-0.0476	0.7294	0.0302
0.65	126	-0.6693	0.7717	0.0571
0.65	222	-0.2484	1.0177	0.035
0.65	234	0.3202	1.0121	0.0379
0.65	306	-0.7645	0.8206	0.063
0.75	66	-0.039	0.8555	0.0301
0.75	78	0.9163	0.9627	0.0729
0.75	90	-0.3083	0.7897	0.0374
0.75	102	0.3339	0.7037	0.0386
0.75	114	0.0695	0.6782	0.0304
0.75	126	-0.464	1.0387	0.0451
0.75	198	-0.0334	1.0387	0.0301
0.75	210	2.149	0.683	0.1587
0.75	222	0.3132	0.852	0.0376
0.75	234	-0.6753	0.7986	0.0574
0.75	246	-0.7628	0.6958	0.0629
0.75	258	0.3051	0.8052	0.0373
0.85	54	0.5976	0.7325	0.0527
0.85	66	0.7399	0.7265	0.0615
0.85	78	-0.8262	0.6896	0.067
0.85	102	0.007	0.7848	0.03
0.85	114	-0.3327	0.8237	0.0385
0.85	198	1.3432	0.8785	0.1019
0.85	210	-0.9914	0.6617	0.0779
0.85	222	0.7568	0.8342	0.0625
0.85	234	0.3936	0.6018	0.0414
0.85	246	-0.4905	0.6575	0.0465
0.85	258	-0.6535	0.5647	0.0561
0.85	270	-0.0635	0.5989	0.0304
0.85	282	-1.1646	0.7135	0.0896
0.85	294	0.0513	0.7633	0.0302
0.95	78	-0.5743	0.9153	0.0513
0.95	198	0.1631	0.9279	0.0322
0.95	210	-0.3227	0.8008	0.038
0.95	222	1.0224	0.7264	0.08
0.95	234	0.3785	0.6648	0.0407
0.95	246	-0.4527	0.6561	0.0445
0.95	258	-0.0827	0.6354	0.0306
0.95	270	-0.7499	0.6251	0.0621
0.95	282	0.786	0.6968	0.0644
0.95	294	0.2996	0.5786	0.037
0.95	306	0.6714	0.6566	0.0572
0.95	318	0.2168	0.6474	0.0339