Influence of graviton on top-antitop production at the LHC

被引：0

作者：

Smolek, Karel ^{[1
]}

Arai, Masato ^{[1
]}

Okada, Nobuchika ^{[1
]}

Simak, Vladislav ^{[1
]}

机构：

[1] Czech Tech Univ, Inst Expt & Appl Phys, Horska 3A-22, Prague 12800 2, Czech Republic

来源：

2007 EUROPHYSICS CONFERENCE ON HIGH ENERGY PHYSICS, PTS 1-12 | 2008年 / 110卷

关键词：

D O I：

10.1088/1742-6596/110/7/072040

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We examine the top quark production in the brane world scenario. We study two typical models - the model proposed by Arkani-Hamed, Dimopoulos and Dvali (ADD) and the model of Randall and Sundrum (RS). In addition to the Standard Model processes, there is a new contribution to the top-antitop pair production process mediated by graviton Kaluza-Klein modes in the s-channel. We calculated the density matrix for the top-antitop pair production including the new contribution. With a reasonable parameter choice, we find a sizable deviation of the top-antitop quark spin correlations from those in the Standard Model.

引用

页数：3

共 4 条

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Arai, M
Okada, N
Smolek, K
Simák, V
[J]. PHYSICAL REVIEW D, 2004, 70 (11): : 115015 - 1
[2] Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
Arai, Masato
Okada, Nobuchika
Smolek, Karel
Simak, Vladislav
[J]. PHYSICAL REVIEW D, 2007, 75 (09):
[3] The hierarchy problem and new dimensions at a millimeter
Arkani-Hamed, N
Dimopoulos, S
Dvali, G
[J]. PHYSICS LETTERS B, 1998, 429 (3-4) : 263 - 272
[4] Large mass hierarchy from a small extra dimension
Randall, L
Sundrum, R
[J]. PHYSICAL REVIEW LETTERS, 1999, 83 (17) : 3370 - 3373

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