CLAS Physics Database

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Measurement E151M2713

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

Q² :	0.2445 GeV²
W :	1295 GeV
ε :	0.7815
E_beam :	1.3383 GeV
ε_L:	0.6208

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LU,
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_LU	Stat. error	Syst. error
0.45	270	-0.0451	0.1988	0.0305
0.55	258	0.691	0.2052	0.033
0.65	258	0.208	0.344	0.0303
0.65	270	-0.8524	0.1758	0.0345
0.75	102	-0.2551	0.3864	0.0304
0.75	114	-0.4462	0.3221	0.0313
0.75	126	-0.0473	0.3417	0.03
0.75	246	0.4162	0.3484	0.0311
0.75	258	-0.2947	0.3983	0.0306
0.75	270	0.3924	0.3123	0.031
0.75	294	-0.3743	0.2813	0.0309
0.85	66	0.383	0.4189	0.031
0.85	90	-0.1524	0.3452	0.0302
0.85	102	-0.164	0.3097	0.0302
0.85	114	0.5084	0.2425	0.0317
0.85	126	0.1097	0.334	0.0301
0.85	138	0.186	0.3599	0.0302
0.85	150	-0.2912	0.315	0.0306
0.85	258	0.2313	0.3516	0.0304
0.85	270	0.3836	0.2575	0.031
0.85	282	0.115	0.3878	0.0301
0.85	306	-0.2719	0.4711	0.0305
0.95	114	0.14	0.3198	0.0301
0.95	174	0.5565	0.2421	0.032
0.55	270	0.1088	0.2549	0.0301
0.55	282	-0.1558	0.2589	0.0302
0.65	270	0.1283	0.2291	0.0301
0.65	282	-0.6212	0.2425	0.0325
0.75	114	0.2946	0.258	0.0306
0.75	126	0.2256	0.26	0.0303
0.75	246	-0.2938	0.2276	0.0306
0.75	258	-0.1939	0.2779	0.0302
0.75	270	-0.0922	0.2536	0.0301
0.75	294	-0.0378	0.2472	0.03
0.85	102	-0.7049	0.2358	0.0331
0.85	114	0.1503	0.216	0.0302
0.85	126	-0.0756	0.2287	0.03
0.85	138	-0.0595	0.2816	0.03
0.85	258	0.1254	0.2593	0.0301
0.85	270	-0.4105	0.2514	0.0311
0.85	282	-0.4746	0.234	0.0315
0.85	294	0.1802	0.2314	0.0302
0.95	66	0.4062	0.2602	0.0311
0.95	114	-0.0981	0.2492	0.0301
0.95	150	0.1817	0.2584	0.0302