ar X iv : h ep - p h / 96 12 25 7 v 1 5 D ec 1 99 6 SLAC - PUB - 7373 UTEXAS - HEP
نویسنده
چکیده
Fermion compositeness and other new physics can be signalled by the presence of a strong four-fermion contact interaction. Here we present a study of llqq and llll contact interactions using the reactions: ll → ll, bb̄, cc̄ at future ee linear colliders with √s = 0.5− 5 TeV and μμ colliders with √ s = 0.5, 4 TeV. We find that very large compositeness scales can be probed at these machines and that the use of polarized beams can unravel their underlying helicity structure. To appear in the Proceedings of the 1996 DPF/DPB Summer Study on New Directions for High Energy Physics Snowmass96, Snowmass, CO, 25 June 12 July, 1996.
منابع مشابه
ar X iv : h ep - p h / 96 09 21 5 v 1 1 S ep 1 99 6 SLAC - PUB - 7272 hep - ph / 9609215 August 1996
I briefly review three topics of recent interest concerning power corrections, renor-malons and Sudakov resummation: (a) 1/Q corrections to event shape observables in e + e − annihilation, (b) power corrections in Drell-Yan production and (c) facto-rial divergences that arise in resummation of large infrared (Sudakov) logarithms in moment or 'real' space.
متن کاملar X iv : h ep - p h / 96 11 42 1 v 1 2 6 N ov 1 99 6 SLAC – PUB – 7361 November 1996 QCD : Questions , Challenges , and Dilemmas ∗
An introduction to some outstanding issues in QCD is presented, with emphasis on work by Diakonov and co-workers on the influence of the instanton vacuum on low-energy QCD observables. This includes the calculation of input valence-parton distributions for deep-inelastic scattering.
متن کاملar X iv : h ep - p h / 96 09 21 5 3 1 A ug 1 99 6 SLAC - PUB - 7272 hep - ph / 9609215 August 1996 POWER CORRECTIONS
I briefly review three topics of recent interest concerning power corrections, renor-malons and Sudakov resummation: (a) 1/Q corrections to event shape observables in e + e − annihilation, (b) power corrections in Drell-Yan production and (c) facto-rial divergences that arise in resummation of large infrared (Sudakov) logarithms in moment or 'real' space.
متن کاملar X iv : h ep - p h / 99 10 25 5 v 1 6 O ct 1 99 9 SLAC - PUB - 8238 October 1999 Indirect Collider Tests for Large Extra
We review the capability of colliders to detect the virtual exchange of Kaluza-Klein towers of gravitons within the low scale quantum gravity scenario of Arkani-Hamed, Dimopoulos and Dvali.
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