arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.4514hep-ph
收藏

Tevatron和LHC上顶夸克和美夸克的新束缚态

New Bound States of Top and Beauty Quarks at the Tevatron and LHC

C. R. Das, C. D. Froggatt, L. V. Laperashvili, H. B. Nielsen

摘要:

本文基于标准模型中存在重夸克束缚态的假设。考虑顶-反顶夸克的新束缚态我们证明了:1)存在6 t +6 \bar t的标量1 S束缚态:2)束缚顶夸克的力很强,几乎完全补偿了标量NBS中12个顶反顶夸克的质量; 3)这种强力是由希格斯-顶夸克相互作用产生的,顶夸克汤川耦合常数g_t \simeq 1很大。理论还预言了NBS 6 t + 5 \bar t的存在,它是一种色三重态,也是一种类似于第四代t '夸克的费米子。我们还考虑了“b夸克取代”的NBS。我们估计了最轻的费米NBS:M_{NBS} \gtrsim 300 GeV的质量,并讨论了T球的更大质量。讨论了在Tevatron和LHC上寻找重夸克束缚态的问题。

英文摘要:

The present paper is based on the assumption that heavy quarks bound states exist in the Standard Model (SM). Considering New Bound States (NBS) of top-anti-top quarks (named T-balls) we have shown that: 1) there exists the scalar 1S-bound state of 6t+6\bar t; 2) the forces which bind the top-quarks are very strong and almost completely compensate the mass of the twelve top-anti-top-quarks in the scalar NBS; 3) such strong forces are produced by the Higgs-top-quarks interaction with a large value of the top-quark Yukawa coupling constant g_t\simeq 1. Theory also predicts the existence of the NBS 6t + 5\bar t, which is a color triplet and a fermion similar to the t'-quark of the fourth generation. We have also considered the "b-quark-replaced" NBS. We have estimated the masses of the lightest fermionic NBS: M_{NBS}\gtrsim 300 GeV, and discussed the larger masses of T-balls. Searching for heavy quarks bound states at the Tevatron and LHC is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑