Search for Heavy Particles Decaying into Electron-Positron Pairs 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 mathvariant="italic">p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>Collisions
V. M. AbazovJoint Institute for Nuclear Research, Dubna, RussiaBraden Keim AbbottUniversity of Oklahoma, Norman, Oklahoma 73019 59 Brown University, Providence, Rhode Island 02912 60 University of Texas, Arlington, Texas 76019 61 Texas A&M University, College Station, Texas 77843A. 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 50011M. 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 66045M. BegelUniversity of Rochester, Rochester, New York 14627A. BelyaevMoscow State University, Moscow, RussiaS. 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, IN2P3-CNRS, Universite de Grenoble 1, 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. BuescherInstitut fr Physik, Universitt Mainz, 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. ChakrabortyState University of New York, Stony Brook, New York 11794K. 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 66045M.A.C. CummingsNorthern Illinois University, DeKalb, Illinois 60115D. CuttsBrown University, Providence, United StatesG. A. DavisUniversity of Rochester, Rochester, New York 14627K. 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, IN2P3-CNRS, Universite de Grenoble 1, Grenoble, FranceD. DenisovFermi National Accelerator Laboratory, Batavia, Illinois 60510S. P. DenisovCINVESTAV, Mexico City, MexicoS. DesaiState University of New York, Stony Brook, New York 11794H. T. DiehlFermi National Accelerator Laboratory, Batavia, Illinois 60510M. DiesburgFermi National Accelerator Laboratory, Batavia, Illinois 60510G. Di LoretoMichigan State University, East Lansing, United StatesS. DoulasNortheastern University, Boston, Massachusetts 02115P. DraperThe University of Texas at Arlington, Arlington, United StatesY. 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, IndiaA. DyshkantInstitute for High Energy Physics, Protvino, Russia
ABI
Abstract
We present results of searches for technirho $({\ensuremath{\rho}}_{T})$, techniomega $({\ensuremath{\omega}}_{T})$, and ${Z}^{\ensuremath{'}}$ particles, using the decay channels ${\ensuremath{\rho}}_{T},{\ensuremath{\omega}}_{T}{,Z}^{\ensuremath{'}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}$. The search is based on $124.8{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected by the D0 detector at the Fermilab Tevatron during 1992--1996. In the absence of a signal, we set $95%$ C.L. upper limits on the cross sections for the processes $p\overline{p}\ensuremath{\rightarrow}{\ensuremath{\rho}}_{T},{\ensuremath{\omega}}_{T},{Z}^{\ensuremath{'}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}$ as a function of the mass of the decaying particle. For certain model parameters, we exclude the existence of degenerate ${\ensuremath{\rho}}_{T}$ and ${\ensuremath{\omega}}_{T}$ states with masses below about 200 GeV. We exclude a ${Z}^{\ensuremath{'}}$ with mass below 670 GeV, assuming that it has the same couplings to fermions as the $Z$ boson.
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