t{bar t} production rates at the Fermilab Tevatron and the CERN LHC in top-color-assisted multiscale technicolor models

Journal Article · Thu May 01 04:00:00 UTC 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.5541· OSTI ID:554244

Yue, C; Zhou, H; Kuang, Y; Lu, G ^[1]; Yue, C; Lu, G ^[2]; Zhou, H; Kuang, Y ^[3]

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1. China Center of Advanced Science and Technology (World Laboratory), P. O. Box 8730, Beijing 100080 (China)
2. Physics Department, Henan Normal University, Xin Xiang, Henan 453002 (China)
3. Institute of Modern Physics, Tsinghua University, Beijing 100084 (China)

We study the contributions of the neutral pseudo Goldstone bosons (technipions and top pions) to the t{bar t} production cross sections at the Fermilab Tevatron and the CERN LHC in top-color-assisted multiscale technicolor (TOPCMTC) models via the gluon-gluon fusion process from the loop-level couplings between the pseudo Goldstone bosons and the gluons. The MRS set A{sup {prime}} parton distributions are used in the calculation. It is shown that the new CDF datum on the t{bar t} production cross section gives constraints on the parameters in the TOPCMTC models. Models with a large portion of technicolor contributed top-quark mass are disfavored. With reasonable values of the parameters in TOPCMTC models, the cross section at the Tevatron is larger than that predicted by the standard model, and is consistent with the new CDF data. The enhancement of the cross section and the resonance peaks at the LHC are more significant, so that it is testable in future experiments. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 554244
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CERN
COLOR MODEL
CROSS SECTIONS
FERMILAB TEVATRON
GLUON-GLUON INTERACTIONS
GOLDSTONE BOSONS
INCLUSIVE INTERACTIONS
MASS
PARTICLE PRODUCTION
PARTON MODEL
PARTONS
PROTON-PROTON INTERACTIONS
QUARKS
STANDARD MODEL
TOPONIUM
UNIFIED GAUGE MODELS