A. K. Ciftci

The Photon Collider at Tesla

High energy photon colliders (γγ,γe) are based on e-e- linear colliders where high energy photons are produced using Compton scattering of laser light on high energy electrons just before the interaction point. This paper is a part of the Technical Design Report of the linear collider TESLA.1 Physics program, possible parameters and some technical aspects of the photon collider at TESLA are discussed.

TESLA Technical Design Report, Part VI, Chapter 1: The Photon Collider at TESLA

High energy photon colliders (γγ,γe) are based on e-e- linear colliders where high energy photons are produced using Compton scattering of laser light on high energy electrons just before the interaction point. This paper is a part of the Technical Design Report of the linear collider TESLA.1 Physics program, possible parameters and some technical aspects of the photon collider at TESLA are discussed.

A search for the fourth SM family

Abstract Arguments favouring the existence of a fourth fermion family in the framework of the Standard Model are given. The masses of the fourth family neutrino, charged lepton and down quark are close to each other within an accuracy of the order of a few GeV and lie between 300–700 GeV. Experiments on the search for these particles are discussed.

Main parameters of TeV energy γp colliders

The main parameters of TeV energy γp colliders have been investigated for PHERA+LC, LHC+TESLA and LHC+e-Linac proposals in detail. In this research, the luminosity of γp collisions and the helicity of the high energy γ beam for these colliders are studied in terms of the distance between the conversion region and the collision point as well as γp invariant mass. The main design problems are also discussed.

Fourth standard model family neutrino at future linear colliders

It is known that flavor democracy favors the existence of the fourth standard model (SM) family. In order to give nonzero masses for the first three-family fermions flavor democracy has to be slightly broken. A parametrization for democracy breaking, which gives the correct values for fundamental fermion masses and, at the same time, predicts quark and lepton Cabibbo-Kobayashi-Maskawa (CKM) matrices in a good agreement with the experimental data, is proposed. The pair productions of the fourth SM family Dirac

TESLA*HERA Based gamma-p and gamma-A Colliders

({\ensuremath{\nu}}_{4})

Conversion efficiency and luminosity for gamma-proton colliders based on the LHC-CLIC or LHC-ILC QCD explorer scheme

and Majorana

New tool for “old” nuclear physics: FEL -nucleus colliders

({N}_{1})

Compensation of lepton charge of matter with relic anti-sneutrinos

neutrinos at future linear colliders with

based γp and γA colliders

\sqrt{s}=500\text{ }\text{ }\mathrm{GeV}