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arXiv 0907.3931hep-phhep-ex
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无希格斯粒子中的质量匹配

Mass-Matching in Higgsless

Adam Martin, Veronica Sanz

摘要:

现代的超维无希格斯粒子方案依赖于费米子和玻色子KK共振之间的质量匹配,以逃避精密电弱测量的限制。在分析了所有的Tevatron和LEP边界上这些所谓的治愈希格斯粒子的情况下,我们研究了它们的LHC签名,并探索如何识别质量匹配机制,其可行性的关键。我们发现,单独和对产生的费米子共振显示为干净的信号与2或4轻子和2硬喷注,而中性和带电玻色子共振是可见的双轻子和轻子WZ通道,分别。对这些通道的共振质量的测量显示了实现$S\simeq 0$所需的匹配。此外,大量的KK-费米子共振的单个产生是SM夸克复合性的明确指示。对于700 GeV范围内的共振,发现范围低于10 fb $^{-1}$的光度。

英文摘要:

Modern extra-dimensional Higgsless scenarios rely on a mass-matching between fermionic and bosonic KK resonances to evade constraints from precision electroweak measurements. After analyzing all of the Tevatron and LEP bounds on these so-called Cured Higgsless scenarios, we study their LHC signatures and explore how to identify the mass-matching mechanism, the key to their viability. We find singly and pair produced fermionic resonances show up as clean signals with 2 or 4 leptons and 2 hard jets, while neutral and charged bosonic resonances are visible in the dilepton and leptonic WZ channels, respectively. A measurement of the resonance masses from these channels shows the matching necessary to achieve $S\simeq 0$. Moreover, a large single production of KK-fermion resonances is a clear indication of compositeness of SM quarks. Discovery reach is below 10 fb$^{-1}$ of luminosity for resonances in the 700 GeV range.

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