Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters
2015
Authors
Khachatryan, V.Adžić, Petar
Ekmedžić, Marko
Milošević, Jovan
Reković, Vladimir
Đorđević, Miloš
Milenović, Predrag
CMS Collaboration (ukupan broj autora: 2142)
Article (Published version)
Metadata
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A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at root s = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb(-1). Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt e-mu final states. Limits are set on the displaced supersymmetry model, with pair production of top squarks decaying into an e-mu final state via R-parity-violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to c tau = 2 cm, excluding masses below 790 GeV at 95% confidence level.
Source:
Physical Review Letters, 2015, 114, 6Funding / projects:
- BMWFW, FWF (Austria), FNRS, FWO (Belgium), CNPq (Brazil), CAPES (Brazil), FAPERJ (Brazil), FAPESP (Brazil), MES (Bulgaria), CERN, CAS (China), MoST (China), NSFC (China)COLCIENCIAS (Colombia)
DOI: 10.1103/PhysRevLett.114.061801
ISSN: 0031-9007; 1079-7114
WoS: 000351206500002
Scopus: 2-s2.0-84922781845
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VinčaTY - JOUR AU - Khachatryan, V. AU - Adžić, Petar AU - Ekmedžić, Marko AU - Milošević, Jovan AU - Reković, Vladimir AU - Đorđević, Miloš AU - Milenović, Predrag PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/448 AB - A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at root s = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb(-1). Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt e-mu final states. Limits are set on the displaced supersymmetry model, with pair production of top squarks decaying into an e-mu final state via R-parity-violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to c tau = 2 cm, excluding masses below 790 GeV at 95% confidence level. T2 - Physical Review Letters T1 - Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters VL - 114 IS - 6 DO - 10.1103/PhysRevLett.114.061801 ER -
@article{ author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag", year = "2015", abstract = "A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at root s = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb(-1). Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt e-mu final states. Limits are set on the displaced supersymmetry model, with pair production of top squarks decaying into an e-mu final state via R-parity-violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to c tau = 2 cm, excluding masses below 790 GeV at 95% confidence level.", journal = "Physical Review Letters", title = "Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters", volume = "114", number = "6", doi = "10.1103/PhysRevLett.114.061801" }
Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2015). Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters. in Physical Review Letters, 114(6). https://doi.org/10.1103/PhysRevLett.114.061801
Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters. in Physical Review Letters. 2015;114(6). doi:10.1103/PhysRevLett.114.061801 .
Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters" in Physical Review Letters, 114, no. 6 (2015), https://doi.org/10.1103/PhysRevLett.114.061801 . .