CLAS Physics Database

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Measurement E151M2787

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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 :	0.1435 GeV²
W :	1415 GeV
ε :	0.7404
E_beam :	1.3383 GeV
ε_L:	0.2337

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
0.55	234	0.0246	0.4046	0.03
0.55	246	0.0088	0.3775	0.03
0.55	258	0.2547	0.2029	0.0304
0.65	126	-0.3396	0.3571	0.0308
0.65	138	-0.5529	0.2755	0.032
0.65	234	0.2885	0.3299	0.0305
0.65	246	0.1399	0.2775	0.0301
0.65	258	-0.0993	0.1847	0.0302
0.75	114	-0.0395	0.2055	0.03
0.75	126	-0.5435	0.2428	0.0319
0.75	222	0.0308	0.2084	0.03
0.75	234	0.2024	0.2012	0.0303
0.75	246	-0.0332	0.2814	0.03
0.75	270	-0.1135	0.2568	0.0301
0.85	114	-0.1178	0.2728	0.0301
0.85	138	0.0835	0.2601	0.03
0.85	150	-0.0566	0.2341	0.03
0.85	234	0.3346	0.2108	0.0307
0.85	246	0.27	0.244	0.0305
0.85	258	0.0926	0.2435	0.0301
0.85	270	-0.3232	0.2149	0.0307
0.85	282	-0.3298	0.2187	0.0307
0.95	78	-0.5363	0.2492	0.0319
0.95	90	0.3207	0.2561	0.0307
0.95	246	-0.1778	0.2369	0.0302
0.95	258	0.1467	0.253	0.0301
0.95	270	-0.1187	0.2603	0.0301
0.95	282	-0.1617	0.2365	0.0302
0.65	270	0.418	0.3641	0.0311
0.75	114	-0.2111	0.4023	0.0303
0.75	126	-0.3859	0.3103	0.031
0.75	138	0.6727	0.2555	0.0329
0.75	150	-0.2075	0.4048	0.0303
0.75	222	-0.2353	0.3209	0.0304
0.75	246	-0.0172	0.353	0.03
0.75	258	-0.1611	0.3235	0.0302
0.75	270	0.1907	0.3799	0.0302
0.85	114	0.4482	0.3277	0.0313
0.85	126	0.2079	0.2989	0.0303
0.85	246	-0.1841	0.301	0.0302
0.85	258	-0.5645	0.2682	0.0321
0.85	270	0.3575	0.3458	0.0308
0.85	282	-0.8799	0.1498	0.0348
0.95	90	0.5017	0.2715	0.0316
0.95	246	0.2671	0.3374	0.0305
0.95	258	0.0497	0.4024	0.03
0.95	270	0.1305	0.3483	0.0301
0.95	282	-0.3214	0.3361	0.0307