Universal Torsion-Induced Interaction from Large Extra Dimensions
高能物理 - 唯象学
2008-11-26 v2
摘要
We consider the Kaluza-Klein (KK) scenario in which only gravity exists in the bulk. Without the assumption of symmetric connection, the presence of brane fermions induces torsion. The result is a universal axial contact interaction that dominates those induced by KK gravitons. This enhancement arises from a large spin density on the brane. Using a global fit to Z-pole observables, we find the 3 sigma bound on the scale of quantum gravity to be 28 TeV for n=2. If Dirac or light sterile neutrinos are present, the data from SN1987A increase the bound to \sqrt{n}M_S >= 210 TeV.
引用
@article{arxiv.hep-ph/0005236,
title = {Universal Torsion-Induced Interaction from Large Extra Dimensions},
author = {Lay Nam Chang and Oleg Lebedev and Will Loinaz and Tatsu Takeuchi},
journal= {arXiv preprint arXiv:hep-ph/0005236},
year = {2008}
}
备注
9 pages REVTeX, 1 postscript figure, uses axodraw.sty