CLAS Physics Database

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Measurement E195M46

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Experiment: CLAS12 RG-K, 2022

Spokespersons: Daniel S. Carman

Measurement comment: P′_z vs. cos(θ_K^c.m.) (integrated over Q², W)
Coordinate system:
(x,y,z), z along virtual photon direction, y normal to electron scattering 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′_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⁺ Σ⁰, polarization: polarized

Q² :	0.4 — 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): cos(θ_K^c.m.),

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

Measured data:

cos(θ_K^c.m.)	P′_z	Data errors	Systematic errors
-0.96	0.21821	0.67833	0.09139
-0.88	-0.17305	0.20685	0.07859
-0.8	0.14231	0.17094	0.07087
-0.72	-0.17572	0.17061	0.07327
-0.64	0.08413	0.17031	0.07309
-0.56	-0.06617	0.16256	0.06828
-0.48	-0.07289	0.15534	0.06297
-0.4	0.08873	0.15091	0.05836
-0.32	0.14551	0.14631	0.05777
-0.24	-0.11425	0.14389	0.05846
-0.16	0.17688	0.14229	0.05839
-0.08	0.13443	0.13381	0.05609
0	0.20238	0.13384	0.05593
0.08	0.19826	0.13293	0.05716
0.16	0.22376	0.13132	0.05493
0.24	-0.14322	0.12922	0.05288
0.32	-0.27764	0.12884	0.05246
0.4	-0.25003	0.12483	0.04822
0.48	-0.18885	0.12007	0.04424
0.56	-0.2026	0.11887	0.04244
0.64	-0.07197	0.11745	0.04265
0.72	-0.45589	0.11796	0.04527
0.8	0.20167	0.13223	0.05384
0.88	-0.02664	0.16563	0.06548
0.96	-0.90669	0.25302	0.08806