Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector
2014
Authors
Aad, G.Agatonović-Jovin, Tatjana
Božović-Jelisavčić, Ivanka
Ćirković, Predrag
Dimitrievska, A.
Krstić, Jelena
Mamužić, Judita
Popović, D. S.
Sijacki, Dj.
Simić, Lj.
Vranješ, Nenad
Vranješ Milosavljević, Marija
ATLAS Collaboration (ukupan broj autora: 2901)
Article
Metadata
Show full item recordAbstract
A search is presented for direct top-squark pair production in final states with two leptons (electrons or muons) of opposite charge using 20.3 fb(-1) of pp collision data at root s = 8 TeV, collected by the ATLAS experiment at the Large Hadron Collider in 2012. No excess over the Standard Model expectation is found. The results are interpreted under the separate assumptions (i) that the top squark decays to a b-quark in addition to an on-shell chargino whose decay occurs via a real or virtual W boson, or (ii) that the top squark decays to a t-quark and the lightest neutralino. A top squark with a mass between 150 GeV and 445 GeV decaying to a b-quark and an on-shell chargino is excluded at 95% confidence level for a top squark mass equal to the chargino mass plus 10 GeV, in the case of a 1 GeV lightest neutralino. Top squarks with masses between 215 (90) GeV and 530 (170) GeV decaying to an on-shell (off-shell) t-quark and a neutralino are excluded at 95% confidence level for a 1 GeV ...neutralino.
Keywords:
Hardron-Hadron ScatteringSource:
Journal of High Energy Physics, 2014, 6Funding / projects:
- ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWF, Austria, FWF, 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, EPLANET, European Union, ERC, European Union, NSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, NSRF, Greece, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, INFN, Italy, MEXT, Japan, CNRST, Morocco, FOM, Netherlands, BRF, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, MNE/IFA, Romania, MES of Russia, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, SER, Switzerland, SNSF, Switzerland, Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, United Kingdom, Royal Society, United Kingdom, DOE, United States of America, NSF, United States of America, Benoziyo Center, Israel, JSPS, Japan, FCT, Portugal, ROSATOM, Russian Federation, MIZS, Slovenia, Wallenberg Foundation, Sweden, Leverhulme Trust, United Kingdom, NWO, Netherlands, RCN, Norway, ICREA
DOI: 10.1007/JHEP06(2014)124
ISSN: 1029-8479
WoS: 000338346400001
Scopus: 2-s2.0-84904317137
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Institution/Community
VinčaTY - JOUR AU - Aad, G. AU - Agatonović-Jovin, Tatjana AU - Božović-Jelisavčić, Ivanka AU - Ćirković, Predrag AU - Dimitrievska, A. AU - Krstić, Jelena AU - Mamužić, Judita AU - Popović, D. S. AU - Sijacki, Dj. AU - Simić, Lj. AU - Vranješ, Nenad AU - Vranješ Milosavljević, Marija PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6057 AB - A search is presented for direct top-squark pair production in final states with two leptons (electrons or muons) of opposite charge using 20.3 fb(-1) of pp collision data at root s = 8 TeV, collected by the ATLAS experiment at the Large Hadron Collider in 2012. No excess over the Standard Model expectation is found. The results are interpreted under the separate assumptions (i) that the top squark decays to a b-quark in addition to an on-shell chargino whose decay occurs via a real or virtual W boson, or (ii) that the top squark decays to a t-quark and the lightest neutralino. A top squark with a mass between 150 GeV and 445 GeV decaying to a b-quark and an on-shell chargino is excluded at 95% confidence level for a top squark mass equal to the chargino mass plus 10 GeV, in the case of a 1 GeV lightest neutralino. Top squarks with masses between 215 (90) GeV and 530 (170) GeV decaying to an on-shell (off-shell) t-quark and a neutralino are excluded at 95% confidence level for a 1 GeV neutralino. T2 - Journal of High Energy Physics T1 - Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector IS - 6 DO - 10.1007/JHEP06(2014)124 ER -
@article{ author = "Aad, G. and Agatonović-Jovin, Tatjana and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Popović, D. S. and Sijacki, Dj. and Simić, Lj. and Vranješ, Nenad and Vranješ Milosavljević, Marija", year = "2014", abstract = "A search is presented for direct top-squark pair production in final states with two leptons (electrons or muons) of opposite charge using 20.3 fb(-1) of pp collision data at root s = 8 TeV, collected by the ATLAS experiment at the Large Hadron Collider in 2012. No excess over the Standard Model expectation is found. The results are interpreted under the separate assumptions (i) that the top squark decays to a b-quark in addition to an on-shell chargino whose decay occurs via a real or virtual W boson, or (ii) that the top squark decays to a t-quark and the lightest neutralino. A top squark with a mass between 150 GeV and 445 GeV decaying to a b-quark and an on-shell chargino is excluded at 95% confidence level for a top squark mass equal to the chargino mass plus 10 GeV, in the case of a 1 GeV lightest neutralino. Top squarks with masses between 215 (90) GeV and 530 (170) GeV decaying to an on-shell (off-shell) t-quark and a neutralino are excluded at 95% confidence level for a 1 GeV neutralino.", journal = "Journal of High Energy Physics", title = "Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector", number = "6", doi = "10.1007/JHEP06(2014)124" }
Aad, G., Agatonović-Jovin, T., Božović-Jelisavčić, I., Ćirković, P., Dimitrievska, A., Krstić, J., Mamužić, J., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, N.,& Vranješ Milosavljević, M.. (2014). Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector. in Journal of High Energy Physics(6). https://doi.org/10.1007/JHEP06(2014)124
Aad G, Agatonović-Jovin T, Božović-Jelisavčić I, Ćirković P, Dimitrievska A, Krstić J, Mamužić J, Popović DS, Sijacki D, Simić L, Vranješ N, Vranješ Milosavljević M. Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector. in Journal of High Energy Physics. 2014;(6). doi:10.1007/JHEP06(2014)124 .
Aad, G., Agatonović-Jovin, Tatjana, Božović-Jelisavčić, Ivanka, Ćirković, Predrag, Dimitrievska, A., Krstić, Jelena, Mamužić, Judita, Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, Nenad, Vranješ Milosavljević, Marija, "Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector" in Journal of High Energy Physics, no. 6 (2014), https://doi.org/10.1007/JHEP06(2014)124 . .