Large-p/sub T/ processes in a nonscaling parton model. OITS-76. [Particle rapidity, cross sections]
A nonscaling parton model is proposed to describe the large transverse momentum processes in hadron collisions. The scale noninvariance behavior of the parton momentum distribution is deduced from the recent ep and ..mu..p deep inelastic scattering data where gross violation of scaling has been observed. Power-law breaking effects are parametrized and utilized in the large-p/sub T/ calculations. The basic subprocess in which the large angle scattering occurs is taken to be between the partons only. With the normalization as the only adjustable parameter in the theory, excellent fits of the pion and proton inclusive cross sections at large p/sub T/ for various energies were achieved. Also a no parameter fit of the p/sub T/ dependence of the opposite-side correlation at 90/sup 0/ was produced. A dip was predicted at y = 0 in the rapidity distribution at high p/sub T/ in the opposite hemisphere, but no data with p/sub T/ > 2 GeV/c is available to check the prediction. The phenomenological success of the nonscaling model therefore, on the one hand, restores the quark-quark hard-collision subprocess for large-p/sub T/ reactions, while on the other suggests severe deviation from scaling in lepton induced interactions at very high Q/sup 2/.
- Research Organization:
- Oregon Univ., Eugene (USA)
- DOE Contract Number:
- EY-76-S-06-2230-004
- OSTI ID:
- 5200850
- Report Number(s):
- RLO/2230/T4-199; TRN: 78-007987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HADRON-HADRON INTERACTIONS
TRANSVERSE MOMENTUM
PARTON MODEL
ANGULAR DISTRIBUTION
CORRELATIONS
CROSS SECTIONS
DEEP INELASTIC SCATTERING
ELECTRON-PROTON INTERACTIONS
INCLUSIVE INTERACTIONS
MUON-PROTON INTERACTIONS
PARTICLE RAPIDITY
PIONS
PROTONS
QUARK MODEL
SCALE INVARIANCE
TOTAL CROSS SECTIONS
BARYONS
BOSONS
COMPOSITE MODELS
DISTRIBUTION
ELECTRON-NUCLEON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESONS
MUON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
SCATTERING
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties