Richard Nickerson

Abstract:

Longitudinal and transverse momentum spectra of final state hadrons produced in deep-inelastic muon-deuterium scattering at incident muon energy of 490 GeV have been measured up to a hadronic center of mass energy of 30 GeV. The longitudinal distributions agree well with data from earlier muon-nucleon scattering experiments; these distributions tend to increase in steepness as the center of mass energy increases. Comparisons with e⁺e^- data at comparable center of mass energies indicate slight differences. The transverse momentum distributions show an increase in mean pT² with an increase in the center of mass energy. © 1991.

Abstract:

A sample of 105 e⁺ e^- events with an invariant mass greater than 11 GeV/c² produced in pp collisions at a center-of-mass energy of 62.3 GeV is discussed. Cross sections are presented as a function of mass and transverse momentum. The multiplicity, transverse momentum, and azimuthal dependence of associated particles are also studied. © 1991.

Abstract:

In this paper the spectrometer constructed by the E665 Collaboration is described. The spectrometer was built during the period 1982-87 and the first data were taken during the 1987-88 Fixed Target run of the Fermi National Accelerator Laboratory (FNAL) Tevatron. This is the first of a series of runs in which a comprehensive program of high energy muon scattering experiments will be performed. © 1990.

Abstract:

A measurement of direct photon production in pp collisions at a center of mass energy ∝s=63 GeV is reported. Arrays of lead-glass calorimeters and multiwire proportional chambers were used as photon detectors. Data are presented in the transverse momentum range from 4.5 to 10 GeV/c and compared with QCD predictions. The event structure of this sample is compared with that of a set dominated by high transverse momentum π O ́'s. © 1989.