CLAS Physics Database

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Measurement E195M40

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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 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′_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⁺ 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′_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	Stat. error	Syst. error
-0.96	-1	0.67491	0.09139
-0.88	0.51112	0.20349	0.07859
-0.8	0.17853	0.16582	0.07087
-0.72	0.11886	0.16626	0.07327
-0.64	0.01441	0.16527	0.07309
-0.56	0.04648	0.15939	0.06828
-0.48	0.14439	0.15064	0.06297
-0.4	0.36568	0.14591	0.05836
-0.32	-0.01977	0.14177	0.05777
-0.24	0.22843	0.13863	0.05846
-0.16	-0.00592	0.1366	0.05839
-0.08	0.09129	0.12971	0.05609
0	-0.13397	0.12859	0.05593
0.08	0.25043	0.1292	0.05716
0.16	-0.07236	0.12617	0.05493
0.24	-0.16616	0.12356	0.05288
0.32	0.13516	0.12372	0.05246
0.4	-0.01143	0.11909	0.04822
0.48	-0.18373	0.11567	0.04424
0.56	0.0644	0.1114	0.04244
0.64	0.03494	0.11142	0.04265
0.72	0.10361	0.11146	0.04527
0.8	-0.06787	0.12048	0.05384
0.88	0.34747	0.14264	0.06548
0.96	0.29938	0.199	0.08806