Phenomenology at the LHC of composite particles from strongly interacting Standard Model fermions via four-fermion operators of NJL type

Phenomenology at the LHC of composite particles from strongly interacting Standard Model fermions via four-fermion operators of NJL type
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通过 NJL 型四费米子算子进行强相互作用标准模型费米子的复合粒子在大型强子对撞机中的现象学

DOI:
10.1140/epjc/s10052-020-7822-0
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发表时间:
2018-10
影响因子:
4.4
通讯作者:
Xue S-S
Xue S-S
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Leonardi R.;Panella O.;Romeo F.;Gurrola A.;Sun Hao;Xue S-S

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一种新的物理方案表明Nambu-Jona-Lasinio(NJL)型四费米子算符存在一个强耦合UV不动点,其中复合费米子F(玻色子)形成为三个(两个)SM基本费米子的束缚态,它们通过复合尺度(TeV)下的有效接触相互作用与其组分耦合.我们提出了一个唯象的研究,调查这样的复合粒子在LHC通过计算复合费米子的产生截面和衰变宽度的背景下,在LHC的相关实验与pp碰撞在TeV和TeV。系统地检查了所有不同的复合粒子F和它们可以表现出来的特征,我们发现了大量的复合粒子F,这些粒子还没有在LHC上被探索过。重铸最近的CMS结果的共振通道(作为),我们发现,复合费米子质量低于4.25 TeV被排除为/= 1。我们进一步强调了该特定复合粒子F可以出现的参数空间区域,使用3,预计由高亮度LHC,计算3和5轮廓图的统计意义。
A new physics scenario shows that four-fermion operators of Nambu-Jona-Lasinio (NJL) type have a strong-coupling UV fixed point, where composite fermionsF(bosons) form as bound states of three (two) SM elementary fermions and they couple to their constituents via effective contact interactions at the composite scale(TeV). We present a phenomenological study to investigate such composite particles at the LHC by computing the production cross sections and decay widths of composite fermions in the context of the relevant experiments at the LHC withppcollisions atTeV andTeV. Systematically examining all the different composite particlesFand the signatures with which they can manifest, we found a vast spectrum of composite particlesFthat has not yet been explored at the LHC. Recasting the recent CMS results of the resonant channel(as), we find that the composite fermion massbelow 4.25 TeV is excluded for/= 1. We further highlight the region of parameter space where this specific composite particleFcan appear using 3, expected by the High-Luminosity LHC, computing 3 and 5contour plots of its statistical significance.
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