On π − π Correlations in Polarized Quark Fragmentation Using the Linear Sigma Model
نویسنده
چکیده
Using the linear sigma model to describe quark–pion interactions, we compute polarization asymmetries in quark fragmentation. We show that the effects of transverse quark polarizations appear in the correlation between the two leading pions in a jet produced by the fragmentation of a quark. Such asymmetries provide a window to the nature of chiral symmetry breaking in QCD.
منابع مشابه
Semi-inclusive π scattering – tests for independent fragmentation and for polarized quark densities
We show that measurements of semi-inclusive π asymmetries on p and n with polarized and unpolarized target and beams allow, without any knowledge of the polarized parton densities 1) to test independent fragmentation and SU(2) symmetry for the polarized sea, and 2) to determine separately the polarized strange and valence quarks densities, and the ratio of the fragmentation functions D +π s /D ...
متن کاملSemi-inclusive π production – tests for independent fragmentation and for polarized quark densities
We show that measurements of semi-inclusive π asymmetries on p and n with polarized and unpolarized target and beams allow, without any knowledge of the polarized parton densities 1) to test independent fragmentation and SU(2) symmetry for the polarized sea, and 2) to determine separately the polarized strange and valence quarks densities, and the ratio of the fragmentation functions D +π s /D ...
متن کاملTransversity and inclusive two-pion production
A model for dihadron fragmentation functions is briefly outlined, that describes the fragmentation of a quark in two unpolarized hadrons. The parameters are tuned to the output of the PYTHIA event generator for two-hadron semi-inclusive production in deep inelastic scattering at HERMES. Then predictions are made for the unknown polarized fragmentation function and the related single-spin asymme...
متن کاملDynamics of Entanglement between Linearly Polarized Photons and π -Electrons in Graphene
In the present article we report the dynamical behavior of entanglement between π-electrons and photons in Graphene. It is shown that the degree of such entanglements depend on the orientation of π-electron momenta relative to the photonic polarization. Moreover, we show that as the detuning between the π-electron transition frequencies and that of the photons is increased, the degree of entang...
متن کاملSingle spin asymmetry of vector meson production as a probe of asymmetry of parton scattering
Azimuthal asymmetry of vector-meson production in single-transversely polarized proton-proton collisions (p↑p) is calculated in the string model of particle production. The asymmetry is generated only during fragmentation of a high-energy quark into hadrons. The obtained asymmetry of the ρ is opposite in sign to that of π mesons. On the other hand, an asymmetry appearing during parton scatterin...
متن کامل