New Particle Search at CERN

Some general information about the physics research done at CERN and the theories are given on https://home.cern/science/physics

First Publications about the Higgs boson discovery by the ATLAS and CMS experiments:

• ATLAS Collaboration, ” Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC”,Phys. Lett. B 716, 1-29(2012)[https://www.sciencedirect.com/science/article/pii/S037026931200857X].
• CMS Collaboration, “Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC" Phys. Lett. B 716,30-61(2012)[https://www.sciencedirect.com/science/article/pii/S0370269312008581.]

Publications about searches for Long-Lived particles Beyond the Standard Model by ATLAS and CMS experiments:

• ATLAS Collaboration, “Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton–proton collisions at √s = 7 TeV with the ATLAS Detector”, Phys. Lett. B 719, 280-298 (2013)[https://arxiv.org/abs/1210.7451]
• ATLAS Collaboration, ”Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at √s = 8 TeV with the ATLAS detector”, Phys. Rev. D92, 072004 (2015)[https://arxiv.org/abs/1504.05162]
• CMS Collaboration, “Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at √s = 8 TeV”, Phys. Rev. D91, 052012 (2015)[https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.052012]
• CMS Collaboration, “Seach for Displaced Supersymmetry in Events with an Electron and a Muon with large Impact Parameters”, Phys. Rev. Lett. 114, 061801, (2015)[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.061801]
• ATLAS Collaboration, “Search for long-lived massive particles in events with a displaced vertex and a muon with large impact parameter in pp collisions at √s = 13 TeV”, Phys. Rev. D102 , 032006 (2020)[https://arxiv.org/abs/2003.11956]

Theories Beyond the Standard Model predicting the existence of such particles:

• R.Barbier et al., “R-parity violating supersymmetry”, Phys.Rep. 420, 1 (2005)[https://arxiv.org/abs/hep-ph/0406039]
• B. C. Allanach, M. A. Bernhardt, H. K. Dreiner, C. H. Kom,and P. Richardson, “Mass Spectrum in R-Parity Violating mSUGRA and Benchmark Points”, Phys. Rev. D 75, 035002 (2007)[https://journals.aps.org/prd/abstract/10.1103/PhysRevD.75.035002]
• S. Dimopoulos, M. Dine, S. Raby, and S.D. Thomas, “Experimental Signatures of Low-Energy Gauge Mediated Supersymmetry Breaking”, Phys. Rev. Lett. 76, 3494 (1996)[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.76.3494]