Search for sphalerons in proton-proton collisions
Search for sphalerons in proton-proton collisions
复制标题
在质子-质子碰撞中寻找球体
DOI：
10.1007/jhep04(2016)086
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发表时间：
2016
影响因子：
5.4
通讯作者：
K. Sakurai
中科院分区：
文献类型：
--
作者：
J. Ellis;K. Sakurai
在最近的一篇论文中，Tye和Wong（TW）认为，与以前的计算相比，应该增强高能质子-质子碰撞中的sphaleron诱导跃迁，这是基于周期sphaleron势中的Bloch波函数和相应的通带结构的构建。在这里，我们卷积的计算TW与部分子分布函数和模拟的最终状态，探索在大型强子对撞机和未来可能的对撞机sphaleron过渡的签名。我们计算的sphaleron过渡率在质子-质子碰撞中的质量中心能量为13/14/33/100 TeV的不同sphaleron势垒高度的增加，同时认识到，率有很大的整体不确定性。我们使用模拟表明，LHC的微观黑洞搜索应该有很好的效率检测sphaleron诱导的最终状态，并讨论他们的实验签名和可观测性运行2的LHC及以后。我们重铸早期的ATLAS运行-2搜索微观黑洞，以限制在13 TeV的sphaleron过渡率，推导出一个显着的限制sphaleron过渡率的名义sphaleron势垒高度为9 TeV。
A bstractIn a recent paper, Tye and Wong (TW) have argued that sphaleron-induced transitions in high-energy proton-proton collisions should be enhanced compared to previous calculations, based on a construction of a Bloch wave function in the periodic sphaleron potential and the corresponding pass band structure. Here we convolute the calculations of TW with parton distribution functions and simulations of final states to explore the signatures of sphaleron transitions at the LHC and possible future colliders. We calculate the increase of sphaleron transition rates in proton-proton collisions at centre-of-mass energies of 13/14/33/100 TeV for different sphaleron barrier heights, while recognising that the rates have large overall uncertainties. We use a simulation to show that LHC searches for microscopic black holes should have good efficiency for detecting sphaleron-induced final states, and discuss their experimental signatures and observability in Run 2 of the LHC and beyond. We recast the early ATLAS Run-2 search for microscopic black holes to constrain the rate of sphaleron transitions at 13 TeV, deriving a significant limit on the sphaleron transition rate for the nominal sphaleron barrier height of 9 TeV.