The polarised photong1γsum rule at the linear collider and high luminosity B factories

The Polarised Photon g γ 1 Sum Rule at the Linear Collider and High Luminosity B Factories ∗

The sum rule for the first moment of the polarised (virtual) photon structure function g γ 1 (x, Q 2 ; K 2) is revisited in the light of proposals for future e + e − colliders. The sum rule exhibits an array of phenomena characteristic of QCD: for real photons (K 2 = 0) electromagnetic gauge invariance constrains the first moment to vanish; the limit for asymptotic photon virtuality (m 2 ρ ≪ K ...

Higgs physics at a high luminosity e+e− linear collider

Since the TESLA Technical Design Report (TDR) was published in 2001, the physics programme of an electron-positron linear collider (LC) has been further developed and a wide consensus has been reached on the physics case and the need for a high luminosity LC with center-of-mass energy up to about 1 TeV as the next worldwide high-energy physics project. The study of the Higgs boson properties re...

Physics with an e + e − Linear Collider at High Luminosity ∗

Dual Aperture High Luminosity Collider at Cornell

We describe a very high luminosity electron-positron collider that operates in the 4s energy range. Trajectories intersect with a small horizontal crossing angle so that closely spaced bunches collide only at the interaction point. An electrostatic deflector steers the counter-rotating beams into side-by-side vacuum chambers that share a common dipole guide field. The beams also share supercond...

Luminosity Spectrum at a Future Linear Collider. A

Important analyses at a future linear collider, including top-quark and W-boson mass measurements will depend upon the precise determination of the luminosity spectrum. This can be done, in principle, in the planned detectors. We review the problems to be solved, both beam-related and detector-related. Since the technique was suggested 1 at the first LCWS, a number of authors have confirmed 2,3...