Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV
2012
Authors
Aad, G.Borjanović, Iris
Božović-Jelisavčić, Ivanka
Agatonović-Jovin, Tatjana
Krstić, Jelena
Mamužić, Judita
Popović, D. S.
Sijacki, Dj.
Simić, Lj.
Vranješ, Nenad
Vranješ Milosavljević, Marija
Živković, Lada
ATLAS Collaboration (ukupan broj autora: 2874)
Article
Metadata
Show full item recordAbstract
The results of a search for pair production of the lighter scalar partners of top quarks ((t) over bar (1)) in 2.05 fb(-1) of pp collisions at root s = 7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e, mu) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking natural scenarios, where the neutralino ((chi) over bar (0)(1)) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115 GeV m( LT (chi) over bar1)(0) 230 GeV at 95% confidence level, reaching an exclusion of m( LT (t) over bar1) 330 GeV for m( LT (chi) over bar1)(0) = 190 GeV. Scalar top quark... masses below 240 GeV are excluded for all values of m((chi) over bar1)(0) GT m(z). (c) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Source:
Physics Letters B, 2012, 715, 1-3, 44-60Funding / projects:
- ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, ARTEMIS, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNAS, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, ISF, Israel, MINERVA, Israel, GIF, Israel, DIP, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, RCN, Norway, MNiSW, Poland, GRICES, Portugal, FCT, Portugal, MERYS (MECTS), Romania, MES of Russia, Russian Federation, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MVZT, Slovenia, DST/NRF, South Africa, MICINN, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER, Canton of Bern Switzerland, SNSF, Canton of Geneva Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, United Kingdom, Royal Society, United Kingdom, DOE, United States, NSF, United States, Leverhulme Trust, United Kingdom, ICREA
DOI: 10.1016/j.physletb.2012.07.010
ISSN: 0370-2693; 1873-2445
WoS: 000308519000009
Scopus: 2-s2.0-84938558426
Collections
Institution/Community
VinčaTY - JOUR AU - Aad, G. AU - Borjanović, Iris AU - Božović-Jelisavčić, Ivanka AU - Agatonović-Jovin, Tatjana AU - Krstić, Jelena AU - Mamužić, Judita AU - Popović, D. S. AU - Sijacki, Dj. AU - Simić, Lj. AU - Vranješ, Nenad AU - Vranješ Milosavljević, Marija AU - Živković, Lada PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5029 AB - The results of a search for pair production of the lighter scalar partners of top quarks ((t) over bar (1)) in 2.05 fb(-1) of pp collisions at root s = 7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e, mu) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking natural scenarios, where the neutralino ((chi) over bar (0)(1)) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115 GeV m( LT (chi) over bar1)(0) 230 GeV at 95% confidence level, reaching an exclusion of m( LT (t) over bar1) 330 GeV for m( LT (chi) over bar1)(0) = 190 GeV. Scalar top quark masses below 240 GeV are excluded for all values of m((chi) over bar1)(0) GT m(z). (c) 2012 CERN. Published by Elsevier B.V. All rights reserved. T2 - Physics Letters B T1 - Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV VL - 715 IS - 1-3 SP - 44 EP - 60 DO - 10.1016/j.physletb.2012.07.010 ER -
@article{ author = "Aad, G. and Borjanović, Iris and Božović-Jelisavčić, Ivanka and Agatonović-Jovin, Tatjana and Krstić, Jelena and Mamužić, Judita and Popović, D. S. and Sijacki, Dj. and Simić, Lj. and Vranješ, Nenad and Vranješ Milosavljević, Marija and Živković, Lada", year = "2012", abstract = "The results of a search for pair production of the lighter scalar partners of top quarks ((t) over bar (1)) in 2.05 fb(-1) of pp collisions at root s = 7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e, mu) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking natural scenarios, where the neutralino ((chi) over bar (0)(1)) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115 GeV m( LT (chi) over bar1)(0) 230 GeV at 95% confidence level, reaching an exclusion of m( LT (t) over bar1) 330 GeV for m( LT (chi) over bar1)(0) = 190 GeV. Scalar top quark masses below 240 GeV are excluded for all values of m((chi) over bar1)(0) GT m(z). (c) 2012 CERN. Published by Elsevier B.V. All rights reserved.", journal = "Physics Letters B", title = "Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV", volume = "715", number = "1-3", pages = "44-60", doi = "10.1016/j.physletb.2012.07.010" }
Aad, G., Borjanović, I., Božović-Jelisavčić, I., Agatonović-Jovin, T., Krstić, J., Mamužić, J., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, N., Vranješ Milosavljević, M.,& Živković, L.. (2012). Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV. in Physics Letters B, 715(1-3), 44-60. https://doi.org/10.1016/j.physletb.2012.07.010
Aad G, Borjanović I, Božović-Jelisavčić I, Agatonović-Jovin T, Krstić J, Mamužić J, Popović DS, Sijacki D, Simić L, Vranješ N, Vranješ Milosavljević M, Živković L. Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV. in Physics Letters B. 2012;715(1-3):44-60. doi:10.1016/j.physletb.2012.07.010 .
Aad, G., Borjanović, Iris, Božović-Jelisavčić, Ivanka, Agatonović-Jovin, Tatjana, Krstić, Jelena, Mamužić, Judita, Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, Nenad, Vranješ Milosavljević, Marija, Živković, Lada, "Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV" in Physics Letters B, 715, no. 1-3 (2012):44-60, https://doi.org/10.1016/j.physletb.2012.07.010 . .