CLAS Physics Database

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Measurement E151M1998

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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_LL,

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

Q² :	0.0496 GeV²
W :	1355 GeV
ε :	0.9585
E_beam :	2.2596 GeV
ε_L:	0.1657

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.35	66	0.5222	0.5838	0.0453
0.35	78	-0.373	0.61	0.04
0.45	78	1.0484	1.381	0.1009
0.45	294	-1.4287	1.0779	0.1347
0.55	78	0.0469	1.4082	0.0303
0.65	78	2.6528	1.3482	0.2456
0.65	114	0.0507	1.5852	0.0304
0.65	246	1.2828	1.0881	0.1217
0.65	258	1.7667	1.2136	0.1651
0.75	102	-1.8964	1.6616	0.1768
0.75	114	-1.5063	1.4561	0.1416
0.75	126	-0.0002	1.5822	0.03
0.75	138	0.3335	1.5477	0.0429
0.75	150	2.2908	1.5372	0.2127
0.75	222	-0.9625	1.4471	0.0934
0.75	234	0.9722	1.1676	0.0943
0.75	246	-0.8966	1.0558	0.0877
0.75	258	0.2111	1.1922	0.0357
0.75	270	0.2615	1.3256	0.0384
0.85	114	-0.1706	1.6595	0.0339
0.85	126	1.4706	1.6134	0.1384
0.85	138	0.6052	1.7887	0.0632
0.85	222	1.5516	1.615	0.1457
0.85	234	-2.1885	1.1903	0.2034
0.85	246	1.1487	1.2782	0.1097
0.85	258	0.0556	1.1705	0.0304
0.85	270	-1.9413	1.4513	0.1809
0.95	234	-4.9089	4.613	0.4521
0.35	294	-0.4139	0.6185	0.0403
0.45	66	-0.4411	0.6743	0.0415
0.45	78	0.2084	0.6514	0.0329
0.45	282	-1.3539	0.6871	0.093
0.65	114	0.2978	0.7703	0.0357
0.65	126	-0.2288	0.8047	0.0335
0.65	246	-0.3131	0.6098	0.0363
0.65	258	0.0385	0.6855	0.0301
0.75	102	-0.2176	0.6694	0.0332
0.75	114	-0.2257	0.6823	0.0334
0.75	126	0.0997	0.7028	0.0307
0.75	138	0.418	0.803	0.0405
0.75	234	0.1488	0.653	0.0315
0.75	246	-0.4786	0.5224	0.0432
0.75	258	0.2104	0.6771	0.033
0.85	114	-0.9601	0.7694	0.0693
0.85	126	-0.8069	0.8073	0.0605
0.85	138	0.6463	0.7963	0.0517
0.85	150	0.9096	0.7621	0.0663
0.85	234	-1.6421	0.738	0.111
0.85	246	0.0198	0.6355	0.03
0.85	258	0.3512	0.5275	0.0377
0.85	270	0.7818	0.6916	0.059