Search for Resonant Pair Production of Neutral Long-Lived Particles Decaying to b(b)over-bar in p(p)over-bar Collisions at root s=1.96 TeV

Made available in DSpace on 2020-12-10T18:12:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-14 DOE NSF (USA) CEA CNRS/IN2P3 (France) FASI Rosatom RFBR (Russia) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação para o Desenvolvimento da UNESP (FUNDUNESP) DAE DST (India) Colciencias (Colombia) CONACyT (Mexico) KRF KOSEF (Korea) CONICET UBACyT (Argentina) FOM (The Netherlands) STFC Royal Society (United Kingdom) MSMT GACR (Czech Republic) CRC Program CFI NSERC BMBF DFG (Germany) SFI (Ireland) The Swedish Research Council (Sweden) CAS CNSF (China) Alexander von Humboldt Foundation (Germany) We report on a first search for resonant pair production of neutral long-lived particles (NLLP) which each decay to a b (b) over bar pair, using 3.6 fb(-1) of data recorded with the D0 detector at the Fermilab Tevatron collider. We search for pairs of displaced vertices in the tracking detector at radii in the range 1.6-20 cm from the beam axis. No significant excess is observed above background, and upper limits are set on the production rate in a hidden-valley benchmark model for a range of Higgs boson masses and NLLP masses and lifetimes. Joint Inst Nucl Res, Dubna, Russia Univ Buenos Aires, Buenos Aires, DF, Argentina Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil Univ Fed ABC, Santo Andre, Brazil Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil Univ Alberta, Edmonton, AB, Canada Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada York Univ, Toronto, ON M3J 2R7, Canada McGill Univ, Montreal, PQ, Canada Univ Sci & Technol China, Hefei 230026, Peoples R China Univ Los Andes, Bogota, Colombia Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic Czech Tech Univ, CR-16635 Prague, Czech Republic Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic Univ San Francisco, Quito, Ecuador Univ Clermont Ferrand, LPC, CNRS, IN2P3, Clermont, France Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France SPP, CEA, Saclay, France Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France Univ Lyon, Lyon, France Rhein Westfal TH Aachen, Inst Phys 3, Aachen, Germany Univ Bonn, Inst Phys, D-5300 Bonn, Germany Univ Freiburg, Inst Phys, Freiburg, Germany Univ Gottingen, Inst Phys 2, Gottingen, Germany Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany Univ Munich, Munich, Germany Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany Panjab Univ, Chandigarh 160014, India Univ Delhi, Delhi 110007, India Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India Univ Coll Dublin, Dublin 2, Ireland Korea Univ, Korea Detector Lab, Seoul, South Korea Sungkyunkwan Univ, Suwon, South Korea CINVESTAV, Mexico City 14000, DF, Mexico FOM, NIKHEF, Amsterdam, Netherlands Univ Amsterdam, NIKHEF, Amsterdam, Netherlands Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands Inst Theoret & Expt Phys, Moscow 117259, Russia Moscow MV Lomonosov State Univ, Moscow, Russia Inst High Energy Phys, Protvino, Russia Petersburg Nucl Phys Inst, St Petersburg, Russia Stockholm Univ, S-10691 Stockholm, Sweden Uppsala Univ, Uppsala, Sweden Univ Lancaster, Lancaster, England Univ London Imperial Coll Sci Technol & Med, London, England Univ Manchester, Manchester, Lancs, England Univ Arizona, Tucson, AZ 85721 USA Calif State Univ Fresno, Fresno, CA 93740 USA Univ Calif Riverside, Riverside, CA 92521 USA Florida State Univ, Tallahassee, FL 32306 USA Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA Univ Illinois, Chicago, IL 60607 USA No Illinois Univ, De Kalb, IL 60115 USA Northwestern Univ, Evanston, IL 60208 USA Indiana Univ, Bloomington, IN 47405 USA Univ Notre Dame, Notre Dame, IN 46556 USA Purdue Univ Calumet, Hammond, IN 46323 USA Iowa State Univ, Ames, IA 50011 USA Univ Kansas, Lawrence, KS 66045 USA Kansas State Univ, Manhattan, KS 66506 USA Louisiana Tech Univ, Ruston, LA 71272 USA Univ Maryland, College Pk, MD 20742 USA Boston Univ, Boston, MA 02215 USA Northeastern Univ, Boston, MA 02115 USA Univ Michigan, Ann Arbor, MI 48109 USA Michigan State Univ, E Lansing, MI 48824 USA Univ Mississippi, University, MS 38677 USA Univ Nebraska, Lincoln, NE 68588 USA Princeton Univ, Princeton, NJ 08544 USA SUNY Buffalo, Buffalo, NY 14260 USA Columbia Univ, New York, NY 10027 USA Univ Rochester, Rochester, NY 14627 USA SUNY Stony Brook, Stony Brook, NY 11794 USA Brookhaven Natl Lab, Upton, NY 11973 USA Langston Univ, Langston, OK 73050 USA Univ Oklahoma, Norman, OK 73019 USA Oklahoma State Univ, Stillwater, OK 74078 USA Brown Univ, Providence, RI 02912 USA Univ Texas Arlington, Arlington, TX 76019 USA So Methodist Univ, Dallas, TX 75275 USA Rice Univ, Houston, TX 77005 USA Univ Virginia, Charlottesville, VA 22901 USA Univ Washington, Seattle, WA 98195 USA Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil