CLAS Physics Database

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Measurement E195M13

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Experiment: CLAS12 RG-K, 2022

Spokespersons: Daniel S. Carman

Measurement comment: P′_x' 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′_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 :	0.4 — 4.5 GeV²
W :	1.6 — 2.4 GeV
E_beam :	7.546 GeV

Observable quantity measured (Y axis): P′_x′,
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′_x′	Data errors	Systematic errors
-0.96	-0.15869	0.1136	0.02439
-0.88	-0.14584	0.03636	0.02265
-0.8	-0.19174	0.02954	0.02008
-0.72	-0.18489	0.02812	0.0189
-0.64	-0.20998	0.02855	0.01943
-0.56	-0.17876	0.02928	0.01973
-0.48	-0.1908	0.02883	0.02013
-0.4	-0.20985	0.02946	0.02046
-0.32	-0.25871	0.02963	0.02071
-0.24	-0.09382	0.02933	0.02109
-0.16	-0.17472	0.02863	0.02035
-0.08	-0.20416	0.02856	0.02172
0	-0.21911	0.02809	0.02068
0.08	-0.13757	0.02734	0.01956
0.16	-0.21669	0.02687	0.01914
0.24	-0.20596	0.02586	0.01827
0.32	-0.19336	0.02507	0.01776
0.4	-0.14725	0.02329	0.01646
0.48	-0.19101	0.02163	0.01574
0.56	-0.21353	0.02012	0.01544
0.64	-0.21535	0.0193	0.01511
0.72	-0.16696	0.01872	0.01532
0.8	-0.14677	0.01886	0.01537
0.88	-0.10984	0.02036	0.0158
0.96	-0.04822	0.02538	0.01697