CLAS Physics Database

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Measurement E195M43

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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 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′_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	-0.55438	0.67259	0.09139
-0.88	0.17758	0.20585	0.07859
-0.8	-0.33083	0.17073	0.07087
-0.72	0.10823	0.17054	0.07327
-0.64	-0.43026	0.16895	0.07309
-0.56	-0.19559	0.16036	0.06828
-0.48	0.01569	0.15339	0.06297
-0.4	-0.39317	0.148	0.05836
-0.32	-0.20966	0.14343	0.05777
-0.24	0.07472	0.14311	0.05846
-0.16	-0.20177	0.13749	0.05839
-0.08	-0.01357	0.13125	0.05609
0	0.0417	0.12886	0.05593
0.08	0.23498	0.12857	0.05716
0.16	-0.07722	0.12506	0.05493
0.24	-0.09347	0.12396	0.05288
0.32	-0.0071	0.12271	0.05246
0.4	0.07128	0.11884	0.04822
0.48	0.00823	0.11611	0.04424
0.56	-0.13807	0.11382	0.04244
0.64	-0.00783	0.11238	0.04265
0.72	-0.46518	0.11215	0.04527
0.8	0.28275	0.12441	0.05384
0.88	-0.07404	0.15512	0.06548
0.96	-0.7568	0.24294	0.08806