Artículos de revistas
Influence of a dynamical gluon mass in the pp and (p)over-bar-p forward scattering
Fecha
2005-08-01Registro en:
Physical Review D. College Pk: American Physical Soc, v. 72, n. 3, 7 p., 2005.
1550-7998
1550-2368
10.1103/PhysRevD.72.034019
WOS:000231564900047
2-s2.0-33749158579
Autor
Universidade Estadual Paulista (Unesp)
Universidade Estadual de Campinas (UNICAMP)
Universidade de São Paulo (USP)
Institución
Resumen
We compute the tree level cross section for gluon-gluon elastic scattering taking into account a dynamical gluon mass, and show that this mass scale is a natural regulator for this subprocess cross section. Using an eikonal approach in order to examine the relationship between this gluon-gluon scattering and the elastic pp and (p) over barp channels, we found that the dynamical gluon mass is of the same order of magnitude as the ad hoc infrared mass scale m(0) underlying eikonalized QCD-inspired models. We argue that this correspondence is not an accidental result, and that this dynamical scale indeed represents the onset of nonperturbative contributions to the elastic hadron-hadron scattering. We apply the eikonal model with a dynamical infrared mass scale to obtain predictions for sigma(tot)(pp,(p) over barp), rho(pp,(p) over barp), slope B-pp,B-(p) over barp, and differential elastic scattering cross section d sigma((p) over barp)/dt at Tevatron and CERN-LHC energies.