Isolated photon cross section in p p̄ collisions at √s = 1.8 TeV
Physical Review Letters 84:13 (2000)
Abstract:
We report a new measurement of the cross section for the production of isolated photons with transverse energies (EHadronic shower development in Iron-Scintillator Tile Calorimetry
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 443:1 (2000) 51-70
Abstract:
The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter presents a unique longitudinal configuration of scintillator tiles. Using a fine-grained pion beam scan at 100 GeV, a detailed picture of transverse shower behaviour is obtained. The underlying radial energy densities for the four depth segments and for the entire calorimeter have been reconstructed. A three-dimensional hadronic shower parametrization has been developed. The results presented here are useful for understanding the performance of iron-scintillator calorimeters, for developing fast simulations of hadronic showers, for many calorimetry problems requiring the integration of a shower energy deposition in a volume and for future calorimeters design.Measurement of the inclusive differential cross section for Z bosons as a function of transverse momentum in p̄p collisions at √s=1.8 TeV
Physical Review D Particles Fields Gravitation and Cosmology 61:3 (2000) 1-19
Abstract:
We present a measurement of the differential cross section as a function of transverse momentum of the Z boson in pp̄ collisions at √s=1.8 TeV using data collected by the DØ experiment at the Fermilab Tevatron Collider during 1994-1996. We find good agreement between our data and the next-to-next-to-next-leading-logarithmic resummation prediction and extract values of the non-perturbative parameters for the resummed prediction from a fit to the differential cross section. ©2000 The American Physical Society.Cross section for b-jet production in supp¯p collisions at √s=1.8 TeV
Physical Review Letters 85:24 (2000) 5068-5073
Abstract:
Bottom-quark production in p¯p collisions at √s=1.8 TeV is studied with 5 pb−1 of data collected in 1995 by the D0 detector at the Fermilab Tevatron Collider. The differential production cross section for b jets in the central rapidity region (|yb|<1) as a function of jet transverse energy is extracted from a muon-tagged jet sample. Within experimental and theoretical uncertainties, D0 results are found to be higher than, but compatible with, next-to-leading-order QCD predictions. © 2000 The American Physical Society.Cross section for b-jet production in (p)over-barp collisions at √s=1.8 TeV
PHYSICAL REVIEW LETTERS 85:24 (2000) 5068-5073