Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV
2011
Authors
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2180)
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A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at root s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb(-1) in the dimuon channel and 35 pb(-1) in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z) or as Kaluza-Klein graviton excitations (G(KK)) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z(GKK) - GT l + l(-) relative to Z - GT l + l(-) are presented. These limits exclude at 95% confidence level a Z with standard-model-like couplings below 1140 GeV, the superstring-inspired Z(psi) below 887 GeV, and, for values of the coupling parameter k/(M) over bar (Pl) of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.
Keywords:
Hadron-Hadron ScatteringSource:
Journal of High Energy Physics, 2011, 5Funding / projects:
- FMSR (Austria), FNRS (Belgium), FWO (Belgium), CNPq (Brazil), CAPES (Brazil), FAPERJ (Brazil), FAPESP (Brazil), MES (Bulgaria), CERN, CAS (China), MoST (China), NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), Academy of Sciences (Estonia), NICPB (Estonia), Academy of Finland, ME (Finland), HIP (Finland), CEA (France), CNRS/IN2P3 (France), BMBF, Germany, DFG (Germany), HGF (Germany), GSRT (Greece), OTKA (Hungary), NKTH (Hungary), DAE (India), DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF (Korea), WCU (Korea), LAS (Lithuania), CINVES-TAV (Mexico), CONACYT (Mexico), SEP (Mexico), UASLP-FAI (Mexico), PAEC (Pakistan), SCSR (Poland), FCT (Portugal), JINR (Armenia), JINR (Belarus), JINR (Georgia), JINR (Ukraine), JINR (Uzbekistan), MST (Russia), MAE (Russia), MSTD (Serbia), MICINN (Spain), CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), TUBITAK (Turkey), TAEK (Turkey), STFC (United Kingdom), DOE (USA), NSF (USA)
DOI: 10.1007/JHEP05(2011)093
ISSN: 1029-8479
WoS: 000291364500025
Scopus: 2-s2.0-80053133985
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VinčaTY - JOUR AU - Chatrchyan, S. AU - Adžić, Petar AU - Đorđević, Miloš AU - Krpić, D. AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4340 AB - A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at root s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb(-1) in the dimuon channel and 35 pb(-1) in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z) or as Kaluza-Klein graviton excitations (G(KK)) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z(GKK) - GT l + l(-) relative to Z - GT l + l(-) are presented. These limits exclude at 95% confidence level a Z with standard-model-like couplings below 1140 GeV, the superstring-inspired Z(psi) below 887 GeV, and, for values of the coupling parameter k/(M) over bar (Pl) of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV. T2 - Journal of High Energy Physics T1 - Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV IS - 5 DO - 10.1007/JHEP05(2011)093 ER -
@article{ author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2011", abstract = "A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at root s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb(-1) in the dimuon channel and 35 pb(-1) in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z) or as Kaluza-Klein graviton excitations (G(KK)) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z(GKK) - GT l + l(-) relative to Z - GT l + l(-) are presented. These limits exclude at 95% confidence level a Z with standard-model-like couplings below 1140 GeV, the superstring-inspired Z(psi) below 887 GeV, and, for values of the coupling parameter k/(M) over bar (Pl) of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.", journal = "Journal of High Energy Physics", title = "Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV", number = "5", doi = "10.1007/JHEP05(2011)093" }
Chatrchyan, S., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2011). Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV. in Journal of High Energy Physics(5). https://doi.org/10.1007/JHEP05(2011)093
Chatrchyan S, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV. in Journal of High Energy Physics. 2011;(5). doi:10.1007/JHEP05(2011)093 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for resonances in the dilepton mass distribution in pp collisions at root s=7 TeV" in Journal of High Energy Physics, no. 5 (2011), https://doi.org/10.1007/JHEP05(2011)093 . .