Showing 2000 · hep-phShow all

11 papers · 2 filters

hep-ph2000★ 6 cited

Top Physics

Elizabeth H. Simmons

The Run I experiments at the Fermilab Tevatron Collider discovered the top quark and provided first measurements of many of its properties. Run II (and eventually the LHC and NLC e…

hep-ph2000★ 9 cited

Composite Scalars at LEP: Constraining Technicolor Theories

Kevin R. Lynch, Elizabeth H. Simmons

LEPI and LEPII data can be used to constrain technicolor models with light, neutral pseudo-Nambu-Goldstone bosons, Pa. We use published limits on branching ratios and cross section…

hep-ph2000★ 38 cited

Anti-B-B Mixing Constrains Topcolor-Assisted Technicolor

Gustavo Burdman, Kenneth Lane, Tonguc Rador

We argue that extended technicolor augmented with topcolor requires that all mixing between the third and the first two quark generations resides in the mixing matrix of left-hande…

hep-ph2000★ 45 cited

Semileptonic Form-factors from B-> K* gamma Decays in the Large Energy Limit

Gustavo Burdman, Gudrun Hiller

Making use of the measurement of the branching ratio together with the relations following from the limit of high recoil energy, we obtain stringent constraints on the…

hep-ph2000★ 18 cited

Anomaly Matching in Gauge Theories at Finite Matter Density

S. D. Hsu, F. Sannino, M. Schwetz

We investigate the application of 't Hooft's anomaly matching conditions to gauge theories at finite matter density. We show that the matching conditions constrain the low-energy q…

hep-ph2000★ 59 cited

Finding Z' bosons coupled preferentially to the third family at CERN LEP and the Fermilab Tevatron

Kevin R. Lynch, Meenakshi Narain, Elizabeth H. Simmons +1

Z' bosons that couple preferentially to the third generation fermions can arise in models with extended weak (SU(2)xSU(2)) or hypercharge (U(1)xU(1)) gauge groups. We show that exi…

hep-ph2000★ 16 cited

The 2+1 Dimensional NJL Model at Finite Temperature

Thomas Appelquist, Myck Schwetz

We decribe properties of 2+1-dimensional Nambu-Jona-Lasinio (NJL) models at finite-temperature, beginning with the model with a discrete chiral symmetry. We then consider the model…

hep-ph2000★ 6 cited

Flavor Gauge Bosons at the Tevatron

Gustavo Burdman, R. Sekhar Chivukula, Nick Evans

We investigate collider signals for gauged flavor symmetries that have been proposed in models of dynamical electroweak symmetry breaking and fermion mass generation. We consider t…

hep-ph2000★ 37 cited

Weak-Singlet Fermions: Models and Constraints

Marko B. Popovic, Elizabeth H. Simmons

We employ data from precision electroweak tests and collider searches to derive constraints on the possibility that weak-singlet fermions mix with the ordinary Standard Model fermi…

hep-ph2000★ 32 cited

Limits on a Composite Higgs Boson

R. Sekhar Chivukula, Nick Evans, Christian Hoelbling

Precision electroweak data are generally believed to constrain the Higgs boson mass to lie below approximately 190 GeV at 95% confidence level. The standard Higgs model is, however…

hep-ph2000★ 10 cited

Vacuum Alignment in Technicolor Theories-I. The Technifermion Sector

Kenneth Lane, Tonguc Rador, Estia Eichten

We have carried out numerical studies of vacuum alignment in technicolor models of electroweak and flavor symmetry breaking. The goal is to understand alignment's implications for…