CLAS Physics Database

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Measurement E151M304

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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 :	0.1435 GeV²
W :	1355 GeV
ε :	0.7997
E_beam :	1.3383 GeV
ε_L:	0.3345

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
0.55	258	0.7545	0.4771	0.0632
0.55	270	0.2399	0.5106	0.0352
0.65	126	-0.1323	0.504	0.0423
0.65	234	-0.6525	0.57	0.0503
0.65	246	-0.8074	0.369	0.0579
0.65	258	-0.0078	0.4036	0.0305
0.65	270	-0.3719	0.4077	0.0377
0.75	102	0.1448	0.5956	0.0313
0.75	114	-0.4995	0.3892	0.0547
0.75	126	-0.1648	0.4325	0.0451
0.75	138	-0.0325	0.4994	0.0301
0.75	222	-0.6327	0.5981	0.0493
0.75	234	-0.526	0.3341	0.0501
0.75	246	0.3943	0.4192	0.0461
0.75	258	-0.2776	0.4134	0.0491
0.75	270	0.0827	0.444	0.0308
0.75	282	-0.6292	0.4252	0.049
0.85	102	0.0977	0.5217	0.0353
0.85	114	0.0973	0.4156	0.0406
0.85	126	0.0392	0.4434	0.0361
0.85	138	-0.3075	0.3711	0.0504
0.85	150	-0.4629	0.4704	0.0478
0.85	162	-0.052	0.9478	0.0302
0.85	234	-0.7867	0.3991	0.0574
0.85	246	-0.1741	0.4348	0.0335
0.85	258	0.7254	0.4581	0.0537
0.85	270	0.1581	0.3776	0.0322
0.85	282	0.0262	0.319	0.031
0.85	294	-1.0137	0.3221	0.07
0.95	78	0.343	0.4416	0.0382
0.95	90	-0.1115	0.4304	0.0353
0.95	102	-0.6877	0.5339	0.0521
0.95	126	-0.2374	0.8379	0.0332
0.95	138	0.1563	0.5496	0.0315
0.95	150	-0.4803	0.5165	0.0422
0.95	174	0.7661	0.5709	0.0561
0.95	234	0.3252	0.4445	0.0381
0.95	246	2.8275	2.8275	0.1729
0.95	258	0.73	0.4222	0.0539
0.95	270	-0.4648	0.3809	0.0414
0.95	282	-0.577	0.3687	0.0468
0.95	294	-0.7648	0.259	0.0679