Semiclassical Decay of Excited String States on Leading Regge Trajectories

Abstract

We study the decay of hadrons based on a semiclassical string model. By including quark mass effects we find that the width to mass ratio $\G/m$ is an increasing function of $m$, which increases most rapidly for massive quarks. This is consistent with the available data. The decay probability of hadrons on the leading Regge trajectories is computed taking the effect of the string rotation into account. The resulting decay probability is no longer uniform along the length of the string but varies in a manner that is in qualitative agreement with the available data. We argue in favour of possible experiments that would test our predictions more accurately and help open a window to the nonperturbative aspects of QCD.

15 PAGES, UR-1326, ER-40685-776, SU-4240-557

References in corpus (2)

• High Temperature Limit of the Confining Phase
• Anomaly matching for the QCD string

Cited by in corpus (8)

• Highly Excited Mesons, Linear Regge Trajectories and the Pattern of the Chiral Symmetry Realization
• Holographic decays of large-spin mesons
• The string/gauge theory correspondence in QCD
• Unstable Rotational States of Closed String with Massive Points
• Decay widths of large-spin mesons from the non-critical string/gauge duality
• Second Stage String Fragmentation Model
• Splitting of macroscopic fundamental strings in flat space and holographic hadron decays
• Holographic meson decays via worldsheet instantons