Novel spin effects in quantum chromodynamics

Conference · Mon Feb 01 04:00:00 EST 1993

OSTI ID:6564811

Brodsky, S J

This report discusses a number of interesting hadronic spin effects which test fundamental features of perturbative and non-perturbative QCD. These include constraints on the shape and normalization of the polarized quark and gluon structure functions of the proton; the principle of hadron helicity retention in high x[sub F] inclusive reactions; predictions based on total hadron helicity conservation in high momentum transfer exclusive reactions; the dependence of nuclear structure functions and shadowing on virtual photon polarization; and general constraints on the magnetic moment of hadrons. I also will discuss the implications of several measurements which are in striking conflict with leading-twist perturbative QCD predictions, such as the extraordinarily large spin correlation A[sub NN] observed in large angle proton-proton scattering, the anomalously large [rho][pi] branching ratio of the J/[psi], and the rapidly changing polarization dependence of both J/[psi] and continuum lepton pair hadroproduction observed at large x[sub F].

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6564811
• Report Number(s): SLAC-PUB-6068; CONF-921131--10; ON: DE93010955
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR CORRELATION
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
BRANCHING RATIO
CHARMONIUM
CORRELATIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FUNCTIONS
GLUONS
HADRON-HADRON INTERACTIONS
HADRONS
HELICITY
INTERACTIONS
J PSI-3097 MESONS
MAGNETIC MOMENTS
MESONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PROTONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
SHADOW EFFECT
SPIN
STRUCTURE FUNCTIONS
VECTOR MESONS