Universal torsion-induced interaction from large extra dimensions

被引：28

作者：

Chang, LN ^{[1
]}

Lebedev, O

Loinaz, W

Takeuchi, T

机构：

[1] Virginia Polytech Inst & State Univ, Inst Particle Phys & Astrophys, Dept Phys, Blacksburg, VA 24061 USA

[2] Amherst Coll, Dept Phys, Amherst, MA 01002 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.85.3765

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 rootn M-S greater than or equal to 210 TeV.

引用

页码：3765 / 3768

页数：4

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