Measurement E179M21

Experiment:	SIDIS Dihadron Beam Spin Asymmetry
Year:	2020	Measurement comment: Binning scheme: bins of x Experiment comment: Process: ep→eπ⁺π^-X Data tables have the following columns: mean Q² mean x mean M_h, the dihadron invariant mass mean z, of the pion pair mean P_T, more commonly written P_h^⊥, is the component of the total dihadron momentum, transverse to q A_LU amplitude, for a particular modulation statistical uncertainty systematic uncertainty For each of the 7 asymmetry modulations, there are 4 tables, one for each binning scheme: (1) binned by x, (2) binned by M_h, (3) binned by z and M_h, and (4) binned by P_T and M_h.
Spokespersons:	C. Dilks, T. Hayward, A. Vossen
Reaction:	ep → π π + X
Polarization:	beam (longitudinal)
Quantity:	A_LU^{sin (−φ_h+2φ_R})
Q²:	1.0 — 10.6 GeV²
W:	2.0 — 4.0 GeV
x:	0.06 — 0.77
E_beam:	10.6041 GeV
Publication:	T.B. Hayward, C. Dilks, A. Vossen, H. Avakian Observation of Beam Spin Asymmetries in the Process ep→eπ+π-X with CLAS12 // (submitted to PRL)

Measurement data
Q², [GeV²]	x	M(π⁺,π⁻), [GeV]	z	P_T, [GeV]	A_LU^{sin (−φ_h+2φ_R})	uncertainty	syst. uncert.
1.542	0.105	0.83	0.531	0.55	-0.0238802	0.00434757	0.00133410662445207
1.783	0.127	0.809	0.547	0.53	-0.0125572	0.00444284	0.000705805217562235
1.953	0.143	0.794	0.557	0.526	-0.0135531	0.00449827	0.000734826710481693
2.105	0.157	0.78	0.559	0.52	-0.0105369	0.00445668	0.00167049223325057
2.286	0.174	0.763	0.566	0.506	-0.0259787	0.00412498	0.00162909644704201
2.471	0.191	0.749	0.571	0.5	-0.0178146	0.00440338	0.000779171105179299
2.707	0.211	0.743	0.571	0.492	-0.0167748	0.00401048	0.000747193918836166
3.003	0.235	0.733	0.572	0.485	-0.015275	0.00418429	0.00071470628554275
3.307	0.261	0.716	0.571	0.468	-0.0123639	0.00446662	0.00072491693090043
3.721	0.294	0.701	0.569	0.46	-0.0155508	0.00422874	0.000807232378449816
4.337	0.342	0.679	0.565	0.44	-0.0162239	0.00434631	0.00133339145861348
5.658	0.44	0.63	0.547	0.408	-0.00682949	0.00448022	0.000666074917491984

CLAS Physics Database