CLAS Physics Database

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Measurement E151M888

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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 :	0.101 GeV²
W :	1595 GeV
ε :	0.8572
E_beam :	2.2596 GeV
ε_L:	0.0979

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	Stat. error	Syst. error
0.65	114	-0.1277	0.8207	0.0322
0.65	126	-1.2974	0.6019	0.1234
0.65	210	-0.3189	0.6937	0.042
0.65	222	-0.2811	0.7176	0.0397
0.75	126	1.6863	0.9388	0.1585
0.75	138	-0.5645	0.8192	0.0601
0.75	282	0.9888	0.7548	0.0961
0.85	90	0.097	0.8861	0.0313
0.85	210	-0.4896	0.7936	0.0542
0.85	222	0.5961	0.8771	0.0627
0.85	246	-0.8432	0.6517	0.0834
0.35	282	-1.1834	0.5752	0.0833
0.45	270	0.1002	0.6346	0.0307
0.45	282	0.2753	0.71	0.035
0.55	270	-0.7984	0.6522	0.0604
0.65	102	-0.303	0.7219	0.036
0.65	126	-0.0698	0.7243	0.0303
0.75	126	0.1391	0.7868	0.0314
0.75	210	1.5235	0.8561	0.1044
0.75	222	0.1897	0.7894	0.0325
0.75	282	1.0253	0.8235	0.0737
0.75	294	0.9203	0.7609	0.0674
0.85	90	-1.9479	0.4862	0.1313
0.85	102	-1.2385	0.6723	0.0866
0.85	114	-0.8337	0.7836	0.0624
0.85	210	-0.754	0.8638	0.0579
0.85	222	-0.1858	0.8673	0.0324
0.85	234	-0.2275	0.6963	0.0335
0.85	246	1.0162	0.8319	0.0731
0.95	234	0.2418	1.3248	0.0339
0.95	246	0.3548	1.3519	0.038