TY - JOUR

T1 - Regge closed string scattering and its implication on fixed angle closed string scattering

AU - Lee, Jen-Chi

AU - Yang, Yi

PY - 2010/4/5

Y1 - 2010/4/5

N2 - We calculate the complete closed string high energy scattering amplitudes (HSA) in the Regge regime for arbitrary mass levels. As an application, we deduce the complete ratios among closed string HSA in the fixed angle regime by using Stirling number identities. These results are in contrast with the incomplete set of closed string HSA in the fixed angle regime calculated previously. The complete forms of the fixed angle amplitudes, and hence the ratios, were not calculable previously without the input of zero-norm state calculation. This is mainly due to the lack of saddle point in the fixed angle closed string calculation.

AB - We calculate the complete closed string high energy scattering amplitudes (HSA) in the Regge regime for arbitrary mass levels. As an application, we deduce the complete ratios among closed string HSA in the fixed angle regime by using Stirling number identities. These results are in contrast with the incomplete set of closed string HSA in the fixed angle regime calculated previously. The complete forms of the fixed angle amplitudes, and hence the ratios, were not calculable previously without the input of zero-norm state calculation. This is mainly due to the lack of saddle point in the fixed angle closed string calculation.

KW - Closed string

KW - High energy scatterings

UR - http://www.scopus.com/inward/record.url?scp=77949487570&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2010.03.004

DO - 10.1016/j.physletb.2010.03.004

M3 - Article

AN - SCOPUS:77949487570

VL - 687

SP - 84

EP - 88

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1

ER -