CLAS Physics Database

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Measurement E151M265

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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 :	0.1205 GeV²
W :	1295 GeV
ε :	0.8604
E_beam :	1.3383 GeV
ε_L:	0.4341

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
0.45	282	-0.3413	0.4612	0.0668
0.55	258	-0.2142	0.395	0.034
0.55	270	-0.2629	0.3463	0.0494
0.55	282	0.6477	0.3877	0.0499
0.65	258	0.3331	0.3172	0.0368
0.65	270	0.0267	0.3458	0.0341
0.65	282	-0.1642	0.3456	0.0327
0.75	114	0.1349	0.4557	0.0332
0.75	126	-0.5622	0.4054	0.048
0.75	138	0.081	0.463	0.0452
0.75	150	-0.0955	0.8875	0.0305
0.75	234	0.1	0.3627	0.0457
0.75	246	-0.1131	0.4523	0.0356
0.75	258	-0.1428	0.3397	0.0336
0.75	270	-0.0786	0.3064	0.0306
0.75	282	0.0022	0.3251	0.041
0.75	294	-0.0368	0.3865	0.0385
0.85	102	-0.0962	0.3341	0.032
0.85	114	-0.4214	0.3076	0.0414
0.85	126	-0.5525	0.2711	0.0462
0.85	138	0.5698	0.3822	0.0485
0.85	150	-0.3974	0.3067	0.041
0.85	162	0.4937	0.4059	0.0439
0.85	246	-0.3665	0.3218	0.0382
0.85	258	0.2633	0.3215	0.0341
0.85	270	0.1835	0.3142	0.0331
0.85	282	-0.3781	0.256	0.0392
0.85	294	-0.2891	0.3577	0.0536
0.95	66	-0.0671	0.3766	0.0318
0.95	78	-0.5095	0.3429	0.0434
0.95	90	-0.2315	0.6502	0.0331
0.95	102	0.5939	0.5071	0.0475
0.95	114	-0.0292	0.3961	0.0322
0.95	126	0.2105	0.3467	0.033
0.95	138	0.5821	0.4364	0.0474
0.95	150	-0.0641	0.3392	0.0304
0.95	162	-0.2077	0.3979	0.0362
0.95	174	0.6102	0.3498	0.0481
0.95	186	0.1848	0.4721	0.0321
0.95	246	-0.212	0.3243	0.0365
0.95	258	-0.162	0.3286	0.0317
0.95	270	-0.0979	0.3168	0.0307
0.95	282	-0.5384	0.3149	0.0499
0.95	294	0.4829	0.3813	0.0439