35 research outputs found
Glueball spectra and Regge trajectories from a modified holographic softwall model
In this work we propose a modified holographic softwall model, analytically
solvable, to calculate the masses of lightest scalar glueball and its radial
excitations and of higher spin glueball states for both even and odd spins.
From these results we obtain their respective Regge trajectories, associated
with the pomeron for even spins and with the odderon for odd spins. These
results are in agreement with those calculated using other approaches.Comment: V.2: 14 pages. Text improved. New appendix. Results unchanged. To
appear in PL
Pomeron and Odderon Regge Trajectories from a Dynamical Holographic Model
In this work we use gauge/string dualities and a dynamical model that takes
into account dynamical corrections to the metric of the anti de Sitter space
due to a quadratic dilaton field and calculate the masses of even and odd spin
glueball states with , and , respectively. Then we construct
the corresponding Regge trajectories which are associated with the pomeron for
even states with , and with the odderon for odd states with .
We compare our results with those coming from experimental data as well as
other models.Comment: V3: 12 pages, 8 figures, 2 tables. Results slightly modified due to
the redefinition of the relation between the five dimensional mass, conformal
dimension and spin. Text improved. We also comment now that the twist two
operator does not work in this model. References added. This version matches
the published one in PL
Scalar and higher even spin glueball masses from an anomalous modified holographic model
In this work, within an anomalous modified holographic softwall model, we
calculate analytically the masses of the scalar glueball with its radial
excitations and higher even glueball spin states, with , from a single
mass equation. Using this approach we achieved an unified treatment for both
scalar and high even spin glueballs masses. Furthermore, we also obtain the
Regge trajectory associated with the pomeron compatible with other approaches.Comment: V4: 14 pages, 3 tables, 1 figure. Text improved. New references
included. Typos corrected. Results slightly modified due to the improvement
of the statistical analysis. This version matches the published one in EP