Hadron structure and soft processes. [Valon model]

Technical Report · Fri May 01 04:00:00 EDT 1981

OSTI ID:5433073

Hwa, R C

The physics of soft hadronic processes is described in terms of the hadronic constituents. Careful distinction is made of the constituent and current quarks. The valon model is suggested as a way of describing hadron structure. The recombination model follows naturally as a description of the hadronization process. These ideas are applied to the hadronization problem in quark and gluon fragmentations in hard processes yielding good agreement with data. The description of inclusive reactions at low P/sub T/ in the fragmentation region is then formulated in the framework of valon and recombination models. A tight connection is thereby established between hadron structure and low-p/sub T/ inclusive processes. From the form factors it is also possible to extract information about the valon wave functions. In the case of the pion that information is used to calculate the pion decay constant with great success. The interaction of a fast quark with nuclear matter is examined, and a quantitative estimate of its radiation length is made. Finally, the recombination model is compared to the fragmentation model.

• Research Organization: Oregon Univ., Eugene (USA). Inst. of Theoretical Science; Oregon Univ., Eugene (USA). Dept. of Physics
• DOE Contract Number: AT06-76ER70004
• OSTI ID: 5433073
• Report Number(s): DOE/ER/70004-311; ON: DE82008361
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELEMENTARY PARTICLES
FORM FACTORS
FRAGMENTATION
FUNCTIONS
GLUONS
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MOMENTUM TRANSFER
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE STRUCTURE
POSTULATED PARTICLES
QUARKS
TRANSVERSE MOMENTUM
WAVE FUNCTIONS