منابع مشابه
Goldstone Boson's Valence-quark Distribution *
Dynamical chiral symmetry breaking (DCSB) is one of the keystones of low-energy hadronic phenomena. Dyson-Schwinger equations provide a model-independent quark-level understanding and correlate that with the behaviour of the pion’s Bethe-Salpeter amplitude. This amplitude is a core element in the calculation of pion observables and combined with the dressed-quark Schwinger function required by ...
متن کاملThe Valence Quark Distribution of the Pion
The pion structure function is investigated in a simple model, where the pion and its constituent quark fields are coupled through the simplest pseudoscalar coupling. The imaginary part of the forward γπ → γπ scattering amplitude is evaluated and related to the structure functions. It is shown that the introduction of nonperturbative effects, linked to the size of the pion, allows a connection ...
متن کاملDirect measurement of the pion valence-quark momentum distribution, the pion light-cone wave function squared.
We present the first direct measurements of the pion valence-quark momentum distribution which is related to the square of the pion light-cone wave function. The measurements were carried out using data on diffractive dissociation of 500 GeV/c pi(-) into dijets from a platinum target at Fermilab experiment E791. The results show that the /q&q> light-cone asymptotic wave function describes the d...
متن کاملMeasurement of Polarized Valence Quark Distribution Functions using Polarized Proton and Deuteron Targets
Semi-inclusive deep inelastic scattering experiments using longitudinally polarized hydrogen (NH3) and deuterium (ND3) targets and a longitudinally polarized electron beam can be used to measure the ratio of the polarized valence quark distribution function to the unpolarized. Semi-inclusive scattering identifies an electron scattering experiment in which the scattered electron and one hadron a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2003
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.68.045208