Higher-order effects in polarized proton dynamics

Polarized higher-order subtyping

Higher order spin resonances in a 2.1-GeV/c polarized proton beam.

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 (ν(y)) resonance caused almost full spin flip, while some higher order ν(y) resonances caused partial depolarization. The 1st order horizontal (ν(x)) resonance caused almost full depolarization, while some highe...

Higher Twist Effects In Proton-Proton Collisions

In this article, we investigate the contribution of the high twist Feynman diagrams to the large-pT pion production cross section in proton-proton collisions and we present the general formulae for the high and leading twist differential cross sections. The pion wave function where two non-trivial Gegenbauer coefficients a2 and a4 have been extracted from the CLEO data, two other pion model wav...

Higher order game dynamics

Continuous-time dynamics for games are typically first order systems where payoffs determine the growth rate of the players’ strategy shares. In this paper, we investigate what happens beyond first order by viewing payoffs as higher order forces of change, specifying e.g. the acceleration of the players’ evolution instead of its velocity (a viewpoint which emerges naturally when it comes to agg...

Higher order polarizabilities of the proton

Compton scattering results are used to probe proton structure via measurement of higher order polarizabilities. Values for αpE2, β p E2, α p Eν , β Eν determined via dispersion relations are compared to predictions based upon chiral symmetry and from the constituent quark model. Extensions to spin-polarizabilities are also discussed.