Search for the Scalar Top Quark in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mrow><mml:mi mathvariant="italic">s</mml:mi></mml:mrow></mml:msqrt><mml:mspace/><mml:mo>=</mml:mo><mml:mspace/><mml:mn>1.8</mml:mn><mml:mn/><mml:mi/><mml:mi>TeV</mml:mi></mml:math>
V. M. AbazovJoint Institute for Nuclear Research, Dubna, RussiaBraden Keim AbbottUniversity of Oklahoma, Norman, United StatesA. AbdesselamLaboratoire de l'Acclrateur Linaire, IN2P3-CNRS, Orsay, FranceM. AbolinsMichigan State University, East Lansing, Michigan 48824V. AbramovInstitute for High Energy Physics, Protvino, RussiaB. S. AcharyaTata Institute of Fundamental Research, Mumbai, IndiaD. L. AdamsThe University of Texas at Arlington, Arlington, United StatesM. AdamsUniversity of Illinois at Chicago, Chicago, Illinois 60607S. N. AhmedUniversity of Nijmegen/NIKHEF, Nijmegen, The NetherlandsG. D. AlexeevJoint Institute for Nuclear Research, Dubna, RussiaG. A. AlvesLAFEX, Centro Brasileiro de Pesquisas Fsicas, Rio de Janeiro, BrazilN. AmosUniversity of Michigan, Ann Arbor, Michigan 48109E. W. AndersonIowa State University, Ames, Iowa 50011Y. ArnoudInstitut des Sciences Nuclaires, IN203-CNRS, Universite de Grenoble1 Grenoble, FranceM. M. BaarmandState University of New York, Stony Brook, New York 11794V. BabintsevInstitute for High Energy Physics, Protvino, RussiaL. BabukhadiaState University of New York, Stony Brook, New York 11794T. C. BaconImperial College, London, United KingdomA. BadenUniversity of Maryland, College Park, Maryland 20742B. BaldinFermi National Accelerator Laboratory, Batavia, Illinois 60510P. W. BalmFOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The NetherlandsS. BanerjeeTata Institute of Fundamental Research, Mumbai, IndiaE. BarberisLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720P. BaringerUniversity of Kansas, Lawrence, Kansas 66045J. BarretoLAFEX, Centro Brasileiro de Pesquisas Fsicas, Rio de Janeiro, BrazilJ. F. BartlettFermi National Accelerator Laboratory, Batavia, Illinois 60510U. BasslerLPNHE, Universits Paris VI and VII, IN2P3-CNRS, Paris, FranceD. BauerImperial College, London, United KingdomA. BeanUniversity of Kansas, Lawrence, Kansas 66045F. BeaudetteLaboratoire de l'Acclrateur Linaire, IN2P3-CNRS, Orsay, FranceM. BegelUniversity of Rochester, Rochester, New York 14627A. BelyaevFlorida State University, Tallahassee, Florida 32306S. B. BeriPanjab University, Chandigarh, IndiaG. BernardiLPNHE, Universits Paris VI and VII, IN2P3-CNRS, Paris, FranceI. A. BertramLancaster University, Lancaster, United KingdomAnne BessonInstitut des Sciences Nuclaires, IN203-CNRS, Universite de Grenoble1 Grenoble, FranceR. BeuselinckImperial College, London, United KingdomV. A. BezzubovInstitute for High Energy Physics, Protvino, RussiaP. C. BhatFermi National Accelerator Laboratory, Batavia, Illinois 60510V. BhatnagarLaboratoire de l'Acclrateur Linaire, IN2P3-CNRS, Orsay, FranceM. BhattacharjeeState University of New York, Stony Brook, New York 11794G. BlazeyNorthern Illinois University, DeKalb, Illinois 60115S. BlessingFlorida State University, Tallahassee, Florida 32306A. BoehnleinFermi National Accelerator Laboratory, Batavia, Illinois 60510N. I. BojkoInstitute for High Energy Physics, Protvino, RussiaF. BorcherdingFermi National Accelerator Laboratory, Batavia, Illinois 60510K. BosFOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The NetherlandsA. BrandtThe University of Texas at Arlington, Arlington, United StatesR. BreedonUniversity of California, Davis, California 95616G. BriskinBrown University, Providence, United StatesR. BrockMichigan State University, East Lansing, Michigan 48824G. BrooijmansFermi National Accelerator Laboratory, Batavia, Illinois 60510A. BrossFermi National Accelerator Laboratory, Batavia, Illinois 60510D. BuchholzNorthwestern University, Evanston, Illinois 60208M. BuehlerUniversity of Illinois at Chicago, Chicago, Illinois 60607V. BuescherUniversitt Mainz, Institut fr Physik, Mainz, GermanyВ. С. БуртовойInstitute for High Energy Physics, Protvino, RussiaJ. M. ButlerBoston University, Boston, Massachusetts 02215F. CanelliUniversity of Rochester, Rochester, New York 14627W. CarvalhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilD. CaseyMichigan State University, East Lansing, Michigan 48824Z. CasilumState University of New York, Stony Brook, New York 11794H. Castilla-ValdezCINVESTAV, Mexico City, MexicoD. ChakrabortyNorthern Illinois University, DeKalb, Illinois 60115K. M. ChanUniversity of Rochester, Rochester, New York 14627S. V. ChekulaevInstitute for High Energy Physics, Protvino, RussiaD. K. ChoUniversity of Rochester, Rochester, New York 14627S. ChoiUniversity of California, Riverside, California 92521S. ChopraBrookhaven National Laboratory, Upton, New York 11973J. H. ChristensonFermi National Accelerator Laboratory, Batavia, Illinois 60510M. ChungUniversity of Illinois at Chicago, Chicago, Illinois 60607D. R. ClaesUniversity of Nebraska, Lincoln, Nebraska 68588A. R. ClarkLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720J. CochranUniversity of California, Riverside, California 92521L. ConeyUniversity of Notre Dame, Notre Dame, Indiana 46556B. ConnollyFlorida State University, Tallahassee, Florida 32306W. E. CooperFermi National Accelerator Laboratory, Batavia, Illinois 60510D. CoppageUniversity of Kansas, Lawrence, Kansas 66045S. Cŕéṕe-RenaudinUniversité Joseph Fourier, Grenoble, FranceM.A.C. CummingsNorthern Illinois University, DeKalb, Illinois 60115D. CuttsBrown University, Providence, United StatesG. A. DavisUniversity of Rochester, Rochester, United StatesK. DavisUniversity of Arizona, Tucson, Arizona 85721K. DeThe University of Texas at Arlington, Arlington, United StatesS. J. de JongUniversity of Nijmegen/NIKHEF, Nijmegen, The NetherlandsK. Del SignoreUniversity of Michigan–Ann Arbor, Ann Arbor, United StatesM. DemarteauFermi National Accelerator Laboratory, Batavia, Illinois 60510R. DeminaKansas State University, Manhattan, Kansas 66506P. DemineInstitut des Sciences Nuclaires, IN203-CNRS, Universite de Grenoble1 Grenoble, FranceD. DenisovFermi National Accelerator Laboratory, Batavia, Illinois 60510S. P. DenisovInstitute for High Energy Physics, Protvino, RussiaS. DesaiState University of New York, Stony Brook, New York 11794H. T. DiehlFermi National Accelerator Laboratory, Batavia, Illinois 60510M. DiesburgFermi National Accelerator Laboratory, Batavia, Illinois 60510S. DoulasNortheastern University, Boston, Massachusetts 02115Y. DucrosDAPNIA/Service de Physique des Particules, CEA, Saclay, FranceL. DudkoMoscow State University, Moscow, RussiaS. DuensingUniversity of Nijmegen/NIKHEF, Nijmegen, The NetherlandsL. DuflotLaboratoire de l'Acclrateur Linaire, IN2P3-CNRS, Orsay, FranceS. R. DugadTata Institute of Fundamental Research, Mumbai, India
ABI
Abstract
We have performed a search for scalar top quark (stop) pair production in the inclusive electron-muon-missing transverse energy final state, using a sample of $p\overline{p}$ events corresponding to $108.3{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected with the D0 detector at Fermilab. The search is done in the framework of the minimal supersymmetric standard model assuming that the sneutrino is the lightest supersymmetric particle. For the dominant decays of the lightest stop, $\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{t}\ensuremath{\rightarrow}b{\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{1}^{+}$ and $\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{t}\ensuremath{\rightarrow}b\ensuremath{\ell}\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\nu}}$, no evidence for signal is found. We derive cross-section limits as a function of stop ( $\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{t}$ ), chargino ( ${\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{1}^{+}$), and sneutrino ( $\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\nu}}$) masses.
Topics
Identifiers
Citations and references
Cited by 036 references
Metrics — AkademScholar · Coming soon