2026-09-17 カリフォルニア大学サンタバーバラ校（UCSB）
Photo Credit:Progress in High Energy Physics (PHEP)
FIGURE 1: Event display of the final products from a simulated microscopic black hole evaporation at the LHC. The red lines represent muons, the orange cones are jets, the yellow lines are tracks, the green line is an electron, and the blue block is for a photon interaction in the electric calorimeter.
＜関連情報＞
- https://news.ucsb.edu/2026/022819/physicists-extend-search-quantum-black-holes-lhc
- https://phep.andromedapublisher.org/index.php/PHEP/article/view/21
CMSにおける新しい機械学習技術を用いたブラックホールと閃亜鉛鉱の探索 Search for Black Holes and Sphalerons Using Novel MachineLearning Techniques at CMS
Tamas Almos Vami,Danyi Zhang
Progress in High Energy Physics Published:2026-05-05
DOI:https://doi.org/10.31526/PHEP.2026.21
Abstract
A comprehensive search for microscopic black holes and electroweak sphalerons is presented, using proton-proton collision data collected by the CMS detector during 2016–2018, corresponding to an inte-grated luminosity of 138 fb−1. A novel tool has been developed to identify collider events with distinct kinematic features, based on the phase space distance between events. In the context of models with large extra dimensions, semiclassical black holes with masses below 9.0-11.4 TeV are excluded by this search, significantly extending previous sensitivity. Additionally, a dedicated search for electroweak sphaleron transitions has been performed. An upper limit of 0.0025 is set at 95% confidence level on the fraction of
quark-quark interactions with center-of-mass energy above the nominal threshold of 9 TeV that result in sphaleron transitions.
