ﻻ يوجد ملخص باللغة العربية
Spin resonances can depolarize or spin-flip a polarized beam. We studied 1st and higher order spin resonances with stored 2.1 GeV/c vertically polarized protons. The 1st order vertical ({ u}y) resonance caused almost full spin-flip, while some higher order { u}y resonances caused partial depolarization. The 1st order horizontal ({ u}x) resonance caused almost full depolarization, while some higher order { u}x resonances again caused partial depolarization. Moreover, a 2nd order { u}x resonance is about as strong as some 3rd order { u}x resonances, while some 3rd order { u}y resonances are much stronger than a 2nd order { u}y resonance. One thought that { u}y spin resonances are far stronger than { u}x, and that lower order resonances are stronger than higher order; the data do not support this.
The SPIN@FERMI collaboration has updated its 1991-95 Reports on the acceleration of polarized protons in Fermilabs Main Injector, which was commissioned by Fermilab. This Updated Report summarizes some updated Physics Goals for a 120-150 GeV/c polari
We study inclusive heavy quarkonium production with definite polarizations in polarized proton-proton collisions using the non-relativistic QCD color-octet mechanism. We present results for rapidity distributions of cross sections and spin asymmetrie
We report a high precision measurement of the transverse single spin asymmetry $A_N$ at the center of mass energy $sqrt{s}=200$ GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The $A_N$ was measured in the four-momentum transf
The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient transfer of polarization from electrons to positrons produced by the pol
Crystals with small thickness along the beam exhibit top performance for steering particle beams through planar channeling. For such crystals, the effect of nuclear dechanneling plays an important role because it affects their efficiency. We addresse