Quark loops and spin-flip effects in pomeron exchange |
| |
Authors: | S V Goloskokov |
| |
Institution: | 1. Joint Institute for Nuclear Research, Head Post Office P.O. Box 79, SU-101000, Moscow, USSR
|
| |
Abstract: | On the basis of QCD at large distances with taking account of some nonperturbative properties of the theory, the possibility of spin-flip effects in high energy hadron processes at fixed momenta transfer is investigated. It is shown that the diagrams with the quark loops in QCD at large distances may lead to the spin-flip amplitude growing ass fors→∞,t-fixed. The confirmation of this result is obtained by calculations of the nonleading contributions from quark loops int-channel exchange in QED up to the end. Physical mechaisms leading to that behavour of the spin-flip amplitude is discussed. So we conclude that the pomeron has a complicated spin structure. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|