75 citations · 434 across the 21 of their papers we have counts for
18 papers · 1 filter
Small t elastic scattering and the rho parameter
A Donnachie, P V Landshoff
A simple application of Regge theory, with 9 free parameters, provides a good fit to elastic scattering data at small t from 13.76 GeV to 13 TeV. It yields a value for rho, the rat…
Perturbative evolution: a different approach at small x
A Donnachie, P V Landshoff
We propose an approach to DGLAP evolution at small x that circumvents the usual problem that a perturbation expansion is not valid there. The data for the charm structure function…
Central soft production of hadrons in collisions
A. Donnachie, P. V. Landshoff
The high-energy behaviour of soft scattering observables such as total cross sections, elastic scattering at small momentum transfer, diffractive dissociation and central productio…
Evolution at small x
A. Donnachie, P. V. Landshoff
At present there is no correct theory of evolution of F_2(x,Q^2) at small x. It is a mixture of hard and soft pomeron exchange and perturbative QCD very successfully describes the…
The proton's gluon distribution
A Donnachie, P V Landshoff
The gluon distribution is dominated by the hard pomeron at small and all , with no soft-pomeron contribution. This describes well not only the DGLAP evolution of the hard-…
Pomeron physics: an update
P V Landshoff
Key issues in pomeron physics include whether the hard and soft pomerons are distinct objects, and whether the hard pomeron is already present in amplitudes at . It is urgen…
Charm production at HERA
A Donnachie, P V Landshoff
The ZEUS data on the charm structure function F_2^c at small x fit well to a single power of x, corresponding to the exchange of a hard pomeron that is flavour-blind. When combined…
Soft and hard pomerons
P V Landshoff
Regge theory provides an excellent description of small- structure-function data from up to the highest available values. The large- data should also be described b…
Renormalisation of the Nonperturbative Thermal Pressure
D Boedeker, P V Landshoff, O Nachtmann +1
We show how the fully resummed thermal pressure is rendered ultraviolet finite by standard zero-temperature renormalisation. The analysis is developed in a 6-dimensional scalar mod…
Final State Interactions in WW Production
A Donnachie, P V Landshoff
It is shown that colour transparency causes nonperturbative colour-singlet final-state interactions to have a negligible effect on the production rate and the dijet mass spectra in…
Foam Diagram Summation at Finite Temperature
I T Drummond, R R Horgan, P V Landshoff +1
We show that large- theory is not trivial if one accepts the presence of a tachyon with a truly huge mass, and that it allows exact calculation. We use it to illustrate ho…
The Interest of Large-t Elastic Scattering
A Donnachie, P V Landshoff
Existing data for large- elastic-scattering differential cross-sections are energy-independent and behave as . This has been explained in terms of triple-gluon exch…
Simple Physical Approach to Thermal Cutting Rules
P V Landshoff
A first-principles derivation is given of the imaginary part of a Green's function in real-time thermal field theory. The analysis and its conclusions are simpler than in the usual…
Some tests for the helicity structure of the pomeron in collisions
T. Arens, M. Diehl, O. Nachtmann +1
We discuss the reaction in the one-photon exchange approximation, where it is in essence the reaction . A large rapidity gap is req…
Photon Radiation in a Heat Bath
P V Landshoff, J C Taylor
We discuss the bremsstrahlung of photons into a heat bath, and calculate from first principles the energy radiated. Even to lowest order the spectrum of the radiation at low freque…
Thermalisation of Longitudinal Gluons
P V Landshoff, A Rebhan
In the usual real-time finite-temperature gauge theory both the physical and the unphysical degrees of freedom are thermalised. We discuss the alternative approach where only the p…
Covariant gauges at finite temperature
P V Landshoff, A Rebhan
A prescription is presented for real-time finite-temperature perturbation theory in covariant gauges, in which only the two physical degrees of freedom of the gauge-field propagato…
Reaction rate in a heat bath
M Jacob, P V Landshoff
We show in detail how the presence of a heat bath of photons effectively gives charged particles in the final state of a decay process a temperature-dependent mass, and changes the…