Long Lived Particles Searches in Heavy Ion Collisions at the LHC
(2020) Physical review. D, Particles and fields — Vol. D101, p. 55002 (2020)
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- Abstract
- We show that heavy ion collisions at the LHC provide a promising environment to search for new long lived particles. A main advantage lies in the possibility to operate the main detectors with lower triggers, which can increase the number of observable events by orders of magnitude if the long lived particles are produced with low transverse momentum. If the LHC is operated with Pb nuclei this is insufficient to overcome the suppression due to the lower instantaneous luminosity compared to proton runs, but for lighter nuclei a higher sensitivity per running time can be achieved than in proton collisions. We illustrate this explicitly for heavy neutrino searches in the Minimal Neutrino Standard Model. In less minimal models with complicated event topology the absence of pile-up provides another key advantage of heavy ion collisions because it avoids the problem of vertex mis-identification. This provides strong motivation to further explore the possibility to search for New Physics in heavy ion collisions.
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Citations
Drewes, M., Giammanco, A., Hajer, J., & Lucente, M. (2020). Long Lived Particles Searches in Heavy Ion Collisions at the LHC. Physical review. D, Particles and fields, D101, 55002. https://doi.org/10.1103/PhysRevD.101.055002 (Original work published 2020)