Soft Pomeron in holographic QCD

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Ballon Bayona, A (Author) Other; Quevedo, RC (Author) Other; Costa, MS (Author) FCUP; Djuric, M (Author) Other

Journal

Title: Physical Review D

Vol. 93

ISSN: 2470-0010

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 22 Citations

Other information

Authenticus ID: P-00K-5J2

DOI: 10.1103/physrevd.93.035005

Abstract (EN): We study the graviton Regge trajectory in holographic QCD as a model for high energy scattering processes dominated by soft-Pomeron exchange. This is done by considering spin J fields from the closed string sector that are dual to glueball states of even spin and parity. In particular, we construct a model that governs the analytic continuation of the spin J field equation to the region of real J < 2, which includes the scattering domain of the negative Maldelstam variable t. The model leads to approximately linear Regge trajectories and is compatible with the measured values of 1.08 for the intercept and 0.25 GeV-2 for the slope of the soft Pomeron. The intercept of the secondary Pomeron trajectory is in the same region of the subleading trajectories, made of mesons, proposed by Donnachie and Landshoff, and should therefore be taken into account.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7