CLAS Physics Database

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Measurement E195M110

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Experiment: CLAS12 RG-K, 2022

Spokespersons: Daniel S. Carman

Measurement comment: Coordinate system:
(x,y,z), z along virtual photon direction, y normal to electron scattering plane, x=y x z
Q² bin: [1:4.5] GeV^2
cos(θ_K^c.m.) bin: [-0.5:0.0]

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′_z,
z 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 :	1 — 4.5 GeV²
W :	1.6 — 2.4 GeV
E_beam :	7.546 GeV

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

Parameter (X axis): W, GeV

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

Measured data:

W, GeV	P′_z	Data errors	Systematic errors
1.64	0.31933	0.06442	0.01776
1.72	0.20173	0.0367	0.01475
1.8	0.12798	0.04033	0.01621
1.88	0.17965	0.0467	0.01914
1.96	0.19547	0.06394	0.02498
2.04	0.09091	0.0868	0.03088
2.12	-0.15285	0.11452	0.03957
2.2	0.1301	0.14398	0.03688
2.28	0.28118	0.21062	0.04389
2.36	0.15676	0.30258	0.04894