Factorization theorems for high energy nn, $\gamma p$ and $\gamma\gamma$ scattering

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Factorization Theorems for High Energy nn , γp and γγ Scattering

The robustness of the factorization theorem for total cross sections, σ nn /σ γp = σ γp /σ γγ , originally proved by Block and Kaidalov[1] for nn (the even portion of pp and ¯ pp scattering), γp and γγ scattering, is demonstrated. Factorization theorems for the nuclear slope parameter B and ρ, the ratio of the real to the imaginary portion of the forward scattering amplitude, are derived under ...

متن کامل

Low Energy Constants from High Energy Theorems

New constraints on resonance saturation in chiral perturbation theory are investigated. These constraints arise because each consistent saturation scheme must map to a representation of the full QCD chiral symmetry group. The low-energy constants of chiral perturbation theory are then related by a set of mixing angles. It is shown that vector meson dominance is a consequence of the fact that na...

متن کامل

nN Backward Scattering

nN backward scattering data above 5 GeV /c are analyzed in terms of the baryon Regge pole exchange and accompanying Regge cut due to the strong absorption. The fit of the cross sections is reasonable. The role of the cut turns out to be very important: (1) The extrapolated magnitude of the L10 residue at a 4 =! is significantly larger than that without the cut. Ll0 residue with or without the w...

متن کامل

NN Scattering Problem

It is shown that chiral perturbation theory (in its original form by Wein-berg) can describe N N scattering with positive as well as negative effective range. Some issues connected with unnaturally large N N 1 S 0 scattering length are discussed. The chiral perturbation theory approach to the low-energy purely pionic processes [1] has been generalised for processes involving an arbitrary number...

متن کامل

High-Energy Factorization and Small-x Deep Inelastic Scattering Beyond Leading Order∗

High-energy factorization in QCD is investigated beyond leading order and its relationship to the factorization theorem of mass singularities is established to any collinear accuracy. Flavour non-singlet observables are shown to be regular at small x order by order in perturbation theory. In the singlet sector, we derive the relevant master equations for the space-like evolution of gluons and q...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The European Physical Journal C

سال: 2003

ISSN: 1434-6044,1434-6052

DOI: 10.1140/epjc/s2003-01318-x