One-loop QCD and electroweak corrections to ttZ{sup 0} production at an e{sup +}e{sup -} linear collider

Journal Article · Sat Nov 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.094010· OSTI ID:21254615

Lei, Dai; Wengan, Ma; Renyou, Zhang; Lei, Guo; Shaoming, Wang ^[1]

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1. Department of Modern Physics, University of Science Technology of China (USTC), Hefei Anhui 230026 (China)

We study the impact of the full O({alpha}{sub s}) QCD and O({alpha}{sub ew}) electroweak (EW) radiative corrections to the e{sup +}e{sup -}{yields}ttZ{sup 0} process in the standard model, and investigate the dependence of the lowest-order (LO), one-loop QCD and EW corrected cross sections on colliding energy {radical}(s). The LO, QCD and EW corrected spectrums of the invariant mass of tt pair and the distributions of the transverse momenta of final top quark and Z{sup 0} boson are presented. The numerical results show that the one-loop QCD correction enhances the LO cross section, but the EW one-loop correction generally suppresses the LO cross section with our chosen parameters. In the case of m{sub H}=120 GeV, the QCD relative corrections can reach 43.16% when {radical}(s)=500 GeV, while the EW relative corrections have the values of -9.24%, -4.36% and -5.81%, when {radical}(s)=500 GeV, 800 GeV, 1.2 TeV, respectively.

• OSTI ID: 21254615
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON-PROTON INTERACTIONS
GEV RANGE 100-1000
LINEAR COLLIDERS
MASS
QUANTUM CHROMODYNAMICS
RADIATIVE CORRECTIONS
SPECTRA
STANDARD MODEL
T QUARKS
TEV RANGE 01-10
TRANSVERSE MOMENTUM
WEINBERG-SALAM GAUGE MODEL