Forward production of high mass muon pairs in pion-nucleon interactions
The production of muon pairs in negative pion nucleon interactions has been studied at a center-of-mass energy of 12.2 GeV. About 4000 events have been collected over a broad range of longitudinal momentum and invariant mass. A comparison with the Drell-Yan Model has been made, confirming the factorization hypothesis. The results favor a non-vanishing value of the pion structure function at the kinematic limit of large longitudinal momentum. Other departures from the standard parton-QCD model are found in this region. The angular distribution of the muon pair becomes characteristic of longitudinal virtual photon polarization, and the transverse momentum of the pair is found to decrease. 39 refs., 70 figs., 21 tabs..
- Research Organization:
- Princeton Univ., NJ (USA). Elementary Particles Lab.
- DOE Contract Number:
- AC02-76ER03072
- OSTI ID:
- 5894952
- Report Number(s):
- DOE/ER/03072-30; ON: DE85008684
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BOSONS
DATA
DISTRIBUTION
DRELL MODEL
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FIELD THEORIES
FUNCTIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MEASURING METHODS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MUON PAIRS
NUMERICAL DATA
PAIR PRODUCTION
PARTICLE INTERACTIONS
PION MINUS-NEUTRON INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NEUTRON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STRUCTURE FUNCTIONS