Top-quark pairs at high invariant mass: A model-independent discriminator of new physics at the Large Hadron Collider

被引：80

作者：

Barger, Vernon ^{[1
]}

Han, Tao ^{[1
]}

Walker, Devin G. E. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.100.031801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study top-quark pair production to probe new physics at the CERN Large Hadron Collider. We propose reconstruction methods for t (t) over bar semileptonic events and use them to reconstruct the t (t) over bar invariant mass. The angular distribution of top quarks in their c.m. frame can determine the spin and production subprocess for each new physics resonance. Forward-backward asymmetry and CP-odd variables can be constructed to further delineate the nature of new physics. We parametrize the new resonances with a few generic parameters and show high invariant mass top pair production may provide an early indicator for new physics beyond the standard model.

引用

页数：4

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