CLAS Physics Database

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Measurement E151M1456

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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 :	0.0143 GeV²
W :	1265 GeV
ε :	0.9379
E_beam :	1.3383 GeV
ε_L:	0.0879

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
0.65	234	-0.6043	0.7372	0.0462
0.65	246	0.2402	0.5995	0.0331
0.65	258	-0.0234	0.6684	0.03
0.65	270	0.4607	0.6966	0.0402
0.75	162	-1.1469	0.6722	0.0731
0.75	234	1.1484	0.733	0.0732
0.75	246	0.0721	0.6377	0.0303
0.75	258	0.0045	0.6176	0.03
0.75	270	-0.6747	0.5937	0.0494
0.85	162	-0.5605	0.8401	0.0443
0.85	234	0.7683	0.7088	0.0538
0.85	246	-0.5088	0.7227	0.0421
0.85	258	-0.9536	0.6713	0.063
0.55	246	0.1577	0.6786	0.0315
0.55	258	0.303	0.6743	0.0351
0.65	234	1.5526	0.5556	0.0978
0.65	246	0.3659	0.4889	0.0372
0.65	258	-0.3692	0.4543	0.0373
0.65	270	-0.6166	0.5566	0.0476
0.75	150	-0.3033	0.6271	0.0351
0.75	234	0.2245	0.6934	0.0329
0.75	246	0.3774	0.5102	0.0376
0.75	258	0.2335	0.555	0.0331
0.75	270	0.5812	0.4744	0.046
0.85	234	-0.2902	0.649	0.0347
0.85	246	0.4355	0.577	0.0398
0.85	258	-0.2258	0.5247	0.0329