The discussion revolves around the topic of missing energy in particle physics, specifically in the context of experiments conducted at the Large Hadron Collider (LHC) and the implications for the existence of extra dimensions. Participants explore the current state of evidence and theoretical limits regarding these concepts.
Participants generally disagree on the existence of missing energy and the implications for extra dimensions, with some asserting that no evidence supports these concepts while others reference past findings that may suggest otherwise. The discussion remains unresolved regarding the interpretation of the cited papers.
Limitations include the dependence on specific theoretical models and the interpretation of experimental results, which may not be universally accepted. The discussion reflects ongoing uncertainties in the field.
fzero said:No evidence for extra dimensions has been found. In the absence of of new physics, model-dependent limits can be placed on the possible size of extra dimensions. The most recent CMS paper on extra dimensions seems to be http://arxiv.org/abs/arXiv:1103.4279, while the Atlas results are older http://arxiv.org/abs/1012.4272.
eiyaz said:Wow no missing energy huh?
What energy levels can we rule out extra dimensions?
A/4 said:The paper you cite is conjecture on possible signals. In reality, no missing energy has been found, nor evidence for extra dimensions. The lower-limit placed on any modified Planck scale is about 4 TeV, based on the fact that no mini-black holes (that is, their evaporation profiles) have been observed.