Speaker
Ms
Diana Seitova
(JINR)
Description
Models of multidimensional low-energy gravity actively studied in the last two decades predict the possibility of the production of microscopic multidimensional black holes and alternative objects of strong gravity at an energy scale of the order of TeV. Theoretically it is possible to observe such objects in particle collisions at the LHC. At the available energies of the accelerator the absence of sufficiently massive semiclassical black holes is confirmed by analyzing the experimental data obtained during the Run 1 and 2 LHC periods. However the situation still might be promising for near-threshold objects with low entropy — “quantum” black holes (QBH) and string balls (SB). Unlike their classic counterparts QBH disintegrate nonthermally into 2-3 particles in different scenarios. In particular, they can be sought in two-particle final states that violate the flavour.
The report presents the results of the CMS collaboration for RUN 2 LHC data at energy of 13 TeV and the limits on the minimum masses of semiclassical and quantum black holes and SB obtained for different final states. It also analyzes the prospects of observing near-threshold objects with low mass during the RUN 3 LHC period.
