W boson plus multijets at hadron colliders: HERWIG parton showers vs exact matrix elements

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6432718

Giele, W T ^[1]; Matsuura, T ^[2]; Seymour, M H; Webber, B R ^[3]

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1. Fermi National Accelerator Lab., Batavia, IL (USA)
2. Hamburg Univ. (Germany, F.R.). 2. Inst. fuer Theoretische Physik
3. Cambridge Univ. (UK). Cavendish Lab.

Predictions of the parton shower simulation program HERWIG for the hadroproduction of a W boson plus n jets (for n {le} 4) are compared with exact tree-level calculations. A variety of distributions relevant to new physics searches in p{bar p} and pp collisions at 1.8 and 40 TeV respectively are compared. If one starts the parton shower simulation from the Drell-Yan subprocess q{bar q} {yields} W, so that all n jets are generated by QCD bremsstrahlung, then the jet distributions generated are too low at low rapidities and at high transverse momenta. If one starts instead from the W plus 1 jet subprocesses, generating n {minus} 1 jets via bremsstrahlung, the shapes of the distributions agree much better, although an empirical factor is still required to bring the absolute cross sections into agreement. 28 refs., 6 figs., 4 tabs.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 6432718
• Report Number(s): FNAL/C-90/228-T; CAVENDISH-HEP-90/26; CONF-9006267-11; ON: DE91005319; TRN: 91-000332
• Resource Relation: Conference: 1990 DPF summer study on high energy physics, Snowmass, CO (USA), 25 Jun - 13 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
INTERMEDIATE VECTOR BOSONS
PARTICLE PRODUCTION
PARTONS
COMPUTERIZED SIMULATION
BREMSSTRAHLUNG
CROSS SECTIONS
JET MODEL
MASS SPECTRA
MATRIX ELEMENTS
PARTICLE RAPIDITY
TRANSVERSE MOMENTUM
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
INTERMEDIATE BOSONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
RADIATIONS
SIMULATION
SPECTRA
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties