Effective Functional Form of Regge Trajectories
نویسندگان
چکیده
We present theoretical arguments and strong phenomenological evidence that hadronic Regge trajectories are essentially nonlinear and can be well approximated, for phenomenological purposes, by a specific square-root form.
منابع مشابه
Effective String Theory of Vortices and Regge Trajectories of Hybrid Mesons with Zero Mass Quarks
We show how a field theory containing classical vortex solutions can be expressed as an effective string theory of long distance QCD describing the two transverse oscillations of the string. We use the semiclassical expansion of this effective string theory about a classical rotating string solution to obtain Regge trajectories for mesons with zero mass quarks. The first semiclassical correctio...
متن کاملar X iv : h ep - p h / 01 05 22 5 v 1 2 2 M ay 2 00 1 Chiral symmetry restoration and the linear form of baryonic Regge trajectories
It has recently been suggested that the observed structure of parity doublets, seen in the spectrum of highly excited baryons, may be due to the effective restoration of chiral symmetry for these states. This chiral symmetry restoration high in the spectrum is consistent with the concept of quark-hadron duality. Moreover, if QCD dynamics implies the linear Regge trajectories for highly excited ...
متن کاملString Model for Analytic Nonlinear Regge Trajectories
We present a new generalized string model for Regge trajectories J = J(E2), where J and E are the orbital momentum and energy of the string, respectively. We demonstrate that this model is not to produce linear Regge trajectories, in contrast to the standard Nambu-Goto string, but generally nonlinear trajectories, which in many cases can be given in analytic form. As an example, we show how the...
متن کاملJa n 20 01 Deuteron photodisintegration within the Quark - Gluon Strings Model and QCD motivated nonlinear Regge trajectories
We investigate deuteron two-body photodisintegration within the framework of the Quark-Gluon Strings Model with nonlinear baryon Regge trajectories. Special attention is paid to the use of QCD motivated Regge trajectories of the logarithmic and square-root form which have been suggested recently by Brisudová, Burakovsky and Goldman. We find that the recent experimental data from TJNAF in the fe...
متن کاملThe Connection between Regge Behavior and Fixed Angle Scattering
The physical origins and dynamical details of Regge behavior are studied by examining a general class of theories which are capable of describing the observed large momentum transfer data and extending them into the intermediate t-range. The mechanism responsible for the smooth connection between the deep scattering region and the Regge region is discussed in detail. We derive a convenient new ...
متن کامل