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- Raymond Frey, David Gerdes, John Jaros, Steve Vejcik, Edmond L Berger, R Sekhar Chivukula +15 others
- 1997

We discuss the study of the top quark at future experiments and machines. Top's large mass makes it a unique probe of physics at the natural electroweak scale. We emphasize measurements of the top quark's mass, width, and couplings, as well as searches for rare or nonstandard decays, and discuss the complementary roles played by hadron and lepton colliders.

- Zack Sullivan, Edmond L Berger
- 2008

Events with three or more isolated leptons in the final state are known to be signatures of new physics phenomena at high energy collider physics facilities. Standard model sources of isolated trilepton final states include gauge boson pair production such as W Z and W γ * , and t ¯ t production. We demonstrate that leptons from heavy flavor decays, such as… (More)

- Edmond L Berger, Harry Contopanagos
- 1997

We discuss calculations of the inclusive total cross section for heavy quark production at hadron collider energies within the context of perturbative quantum chromodynamics, including resummation of the effects of initial-state soft gluon radiation to all orders in the strong coupling strength. We resum the universal leading-logarithm contributions, and we… (More)

- Edmond L Berger, Harry Contopanagos
- 1996

Our calculation of the total cross section for inclusive production of t ¯ t pairs in hadron collisions is presented. The principal ingredient of the calculation is resummation of the universal leading-logarithm effects of gluon radiation to all orders in the quantum chromodynamics coupling strength, restricted to the region of phase space that is… (More)

- Edmond L Berger, Harry Contopanagos
- 1995

We present a calculation of the total cross section for top quark production based on a new perturbative resummation of gluon radiative corrections to the basic QCD subprocesses. We use Principal Value Resummation to calculate all relevant large threshold corrections. Advantages of this method include its independence from arbitrary infrared cutoos and… (More)

- Edmond L Berger, Harry Contopanagos
- 1995

A calculation of the total cross section for top quark production in hadron-hadron collisions is presented based on an all-orders perturbative resummation of initial-state gluon radiative contributions to the basic quantum chromodynamics subprocesses. Principal-value resummation is used to evaluate all relevant large threshold contributions. In this method… (More)

A large forward-backward asymmetry is seen in both the top quark rapidity distribution A(FB)(t) and in the rapidity distribution of charged leptons A(FB)(ℓ) from top quarks produced at the Tevatron. We study the kinematic and dynamic aspects of the relationship of the two observables arising from the spin correlation between the charged lepton and the top… (More)

- Edmond L Berger, Michael Klasen, Tim M P Tait
- 2008

We present complete results of a next-to-leading order calculation of the production of gaugino-like charginos (˜ χ ±) and neutralinos (˜ χ 0) in association with gluinos (˜ g) at hadron colliders, including the strong corrections from the exchange of colored particles and sparticles. Adopting a variety of models for the sparticle mass spectrum, including… (More)

- Edmond L Berger, Jianwei Qiu, Yili Wang
- 2008

We predict the shape of the transverse momentum p T spectrum of Υ production. The distribution at low p T is dominated by the region of small impact parameter b and may be computed reliably in perturbation theory. We resum to all orders in the strong coupling αs the process-independent large logarithmic contributions that arise from initial-state gluon… (More)