CLAS Physics Database

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Measurement E195M2

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Experiment: CLAS12 RG-K, 2022

Spokespersons: Daniel S. Carman

Measurement comment: P′_x' vs. Q² (integrated over W, cos(θ_K^c.m.))
Coordinate system:
(x′,y′,z′), z′ along K⁺, y′ normal to hadronic plane, x′=y′ x z′

Publication:

D. S. Carman et al. (CLAS Collaboration) Beam-recoil transferred polarization in K + Y electroproduction in the nucleon resonance region with CLAS12 // https://journals.aps.org/prc/abstract/10.1103/PhysRevC.105.065201

Quantity measured: P′_x′,
x projection of beam-recoil transferred polarization P′ in (x',y',z') system
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: K⁺ Λ, polarization: polarized

Q² :	0.3 — 3.5 GeV²
W :	1.6 — 2.4 GeV
E_beam :	6.535 GeV

Observable quantity measured (Y axis): P′_x′,
Plot measurement data

Parameter (X axis): Q², GeV²

Click here to get data in text file, delimited with tabs.

Measured data:

Q², GeV²	P′_x′	Stat. error	Syst. error
0.35	-0.18458	0.00912	0.0211
0.45	-0.20381	0.00887	0.02005
0.55	-0.21435	0.00975	0.01928
0.65	-0.20852	0.01058	0.01848
0.75	-0.19238	0.0115	0.01813
0.85	-0.2055	0.01246	0.01767
0.95	-0.22816	0.01347	0.01762
1.05	-0.245	0.01461	0.01704
1.15	-0.2014	0.01582	0.01707
1.25	-0.20481	0.01715	0.01677
1.35	-0.22927	0.01878	0.0167
1.45	-0.27865	0.02016	0.01691
1.6	-0.24377	0.01628	0.01688
1.8	-0.26123	0.01941	0.01714
2	-0.25679	0.02295	0.01716
2.2	-0.31172	0.02662	0.01708
2.4	-0.26767	0.03141	0.01723
2.65	-0.35799	0.0304	0.01702
2.95	-0.39018	0.03625	0.01648
3.3	-0.43081	0.03904	0.01605