High energy string-brane scattering for massive states

Jul, 2011
27 pages
Published in:
  • Nucl.Phys.B 859 (2012) 299-320
  • Published: Jun 21, 2012
e-Print:
Report number:
  • QMUL-PH-11-10

Citations per year

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Abstract: (Elsevier)
String–brane interactions provide an ideal framework to study the dynamics of the massive states of the string spectrum in a non-trivial background. We present here an analysis of tree-level amplitudes for processes in which an NS–NS string state from the leading Regge trajectory scatters from a D-brane into another state from the leading Regge trajectory, in general of a different mass, at high energies and small scattering angles. This is done by using world-sheet OPE methods and effective vertex operators. We find that this class of processes has a universal dependence on the energy of the projectile. We then compare the result for these inelastic processes with that which one would obtain from the eikonal operator in a non-trivial test of its ability to describe transitions between different string mass levels. The two are found to be in agreement.
Note:
  • 28 pages, 2 figures
  • energy: high
  • string: spectrum
  • operator: vertex
  • string: scattering
  • tree approximation
  • Regge poles
  • S-matrix
  • D-brane
  • eikonal