Department of Physics & Astronomy

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Browsing Department of Physics & Astronomy by Subject "2HDM"

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    Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in l(+)l(-)b(b)over-bar final states
    (Elsevier, 2015) CMS Collaboration; Charaf, O.; Cooper, S.I.; Henderson, C.; Rumerio, P.; Yerevan Physics Institute; Belarusian State University; National Center of Particles & High Energy Physics - Belarus; University of Antwerp; Vrije Universiteit Brussel; Universite Libre de Bruxelles; Ghent University; Universite Catholique Louvain; University of Mons; Centro Brasileiro de Pesquisas Fisicas; Universidade do Estado do Rio de Janeiro; Universidade Estadual Paulista; Universidade Federal do ABC (UFABC); Bulgarian Academy of Sciences; University of Sofia; Chinese Academy of Sciences; Institute of High Energy Physics, CAS; Peking University; Universidad de los Andes (Colombia); University of Split; Rudjer Boskovic Institute; University of Cyprus; Charles University Prague; Egyptian Academy of Scientific Research & Technology (ASRT); Egyptian Knowledge Bank (EKB); Egyptian Network of High Energy Physics (ENHEP); Arab Academy for Science, Technology & Maritime Transport; National Institute of Chemical Physics & Biophysics (NICPB); University of Helsinki; Helsinki Institute of Physics; Lappeenranta University of Technology; CEA; UDICE-French Research Universities; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute of Nuclear and Particle Physics (IN2P3); Institut Polytechnique de Paris; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Universite de Haute-Alsace (UHA); Universite Claude Bernard Lyon 1; Ivane Javakhishvili Tbilisi State University; RWTH Aachen University; Helmholtz Association; Deutsches Elektronen-Synchrotron (DESY); University of Hamburg; Karlsruhe Institute of Technology; National Centre of Scientific Research "Demokritos"; National & Kapodistrian University of Athens; University of Ioannina; Eotvos Lorand Research Network; Hungarian Academy of Sciences; Hungarian Wigner Research Centre for Physics; Hungarian Institute for Nuclear Research; University of Debrecen; National Institute of Science Education & Research (NISER); Panjab University; University of Delhi; Saha Institute of Nuclear Physics; Bhabha Atomic Research Center (BARC); Tata Institute of Fundamental Research (TIFR); Indian Institute of Science Education & Research (IISER) Pune; University College Dublin; Istituto Nazionale di Fisica Nucleare (INFN); Universita degli Studi di Bari Aldo Moro; Politecnico di Bari; University of Bologna; University of Catania; University of Florence; University of Genoa; University of Milano-Bicocca; University of Naples Federico II; University of Basilicata; Guglielmo Marconi University; University of Padua; University of Trento; University of Pavia; University of Perugia; University of Pisa; Scuola Normale Superiore di Pisa; Sapienza University Rome; University of Turin; University of Eastern Piedmont Amedeo Avogadro; University of Trieste; Kangwon National University; Kyungpook National University; Jeonbuk National University; Chonnam National University; Korea University; Seoul National University (SNU); University of Seoul; Sungkyunkwan University (SKKU); Vilnius University; Universiti Malaya; Instituto Politecnico Nacional - Mexico; Universidad Iberoamericana Ciudad de Mexico; Benemerita Universidad Autonoma de Puebla; Universidad Autonoma de San Luis Potosi; University of Auckland; University of Canterbury; National Centre for Physics - Pakistan; Quaid I Azam University; National Centre for Nuclear Research; University of Warsaw; Laboratorio de Instrumentacao e Fisica Experimental de Particulas; Joint Institute for Nuclear Research - Russia; National Research Centre - Kurchatov Institute; Petersburg Nuclear Physics Institute; Russian Academy of Sciences; Institute for Nuclear Research of the Russian Academy of Sciences; Alikhanov Institute for Theoretical & Experimental Physics; Russian Academy of Science Lebedev Physical Institute; Lomonosov Moscow State University; Institute of High Energy Physics - IHEP; University of Belgrade; Centro de Investigaciones Energeticas, Medioambientales Tecnologicas; Autonomous University of Madrid; University of Oviedo; Consejo Superior de Investigaciones Cientificas (CSIC); Universidad de Cantabria; CSIC - Instituto de Fisica de Cantabria (IFCA); European Organization for Nuclear Research (CERN); Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; ETH Zurich; University of Zurich; National Central University; National Taiwan University; Chulalongkorn University; Cukurova University; Middle East Technical University; Bogazici University; Istanbul Technical University; National Academy of Sciences Ukraine; Institute for Scintillation Materials of the National Academy of Sciences of Ukraine; Kharkov Institute of Physics & Technology; University of Bristol; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); STFC Rutherford Appleton Laboratory; Imperial College London; Brunel University; Baylor University; University of Alabama Tuscaloosa; Boston University; Brown University; University of California System; University of California Davis; University of California Los Angeles; University of California Riverside; University of California San Diego; University of California Santa Barbara; California Institute of Technology; Carnegie Mellon University; University of Colorado System; University of Colorado Boulder; Cornell University; United States Department of Energy (DOE); University of Chicago; Fermi National Accelerator Laboratory; State University System of Florida; University of Florida; Florida International University; Florida State University; Florida Institute of Technology; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Iowa; Johns Hopkins University; University of Kansas; Kansas State University; Lawrence Livermore National Laboratory; University System of Maryland; University of Maryland College Park; Massachusetts Institute of Technology (MIT); University of Minnesota System; University of Minnesota Twin Cities; University of Mississippi; University of Nebraska System; University of Nebraska Lincoln; State University of New York (SUNY) System; State University of New York (SUNY) Buffalo; Northeastern University; Northwestern University; University of Notre Dame; University System of Ohio; Ohio State University; Princeton University; Purdue University System; Purdue University; Purdue University West Lafayette Campus; Rice University; University of Rochester; Rockefeller University; Rutgers State University New Brunswick; University of Tennessee System; University of Tennessee Knoxville; Texas A&M University System; Texas A&M University College Station; Texas Tech University System; Texas Tech University; Vanderbilt University; University of Virginia; Wayne State University; University of Wisconsin System; University of Wisconsin Madison
    Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb̅. The search is based on data from proton–proton collisions at a center-of-mass energy \(\sqrt{s}\)=8TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb⁻¹. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.
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    Search for diphoton resonances in the mass range from 150 to 850 GeV in pp collisions at root s=8 TeV
    (Elsevier, 2015) CMS Collaboration; Charaf, O.; Cooper, S.I.; Henderson, C.; Rumerio, P.; Yerevan Physics Institute; Belarusian State University; National Center of Particles & High Energy Physics - Belarus; University of Antwerp; Vrije Universiteit Brussel; Universite Libre de Bruxelles; Ghent University; Universite Catholique Louvain; University of Mons; Centro Brasileiro de Pesquisas Fisicas; Universidade do Estado do Rio de Janeiro; Universidade Estadual Paulista; Universidade Federal do ABC (UFABC); Bulgarian Academy of Sciences; University of Sofia; Chinese Academy of Sciences; Institute of High Energy Physics, CAS; Peking University; Universidad de los Andes (Colombia); University of Split; Rudjer Boskovic Institute; University of Cyprus; Charles University Prague; Egyptian Academy of Scientific Research & Technology (ASRT); Egyptian Knowledge Bank (EKB); Egyptian Network of High Energy Physics (ENHEP); National Institute of Chemical Physics & Biophysics (NICPB); University of Helsinki; Helsinki Institute of Physics; Lappeenranta University of Technology; CEA; UDICE-French Research Universities; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute of Nuclear and Particle Physics (IN2P3); Institut Polytechnique de Paris; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Universite de Haute-Alsace (UHA); Universite Claude Bernard Lyon 1; Ivane Javakhishvili Tbilisi State University; RWTH Aachen University; Helmholtz Association; Deutsches Elektronen-Synchrotron (DESY); University of Hamburg; Karlsruhe Institute of Technology; National Centre of Scientific Research "Demokritos"; National & Kapodistrian University of Athens; University of Ioannina; Eotvos Lorand Research Network; Hungarian Academy of Sciences; Hungarian Wigner Research Centre for Physics; Hungarian Institute for Nuclear Research; University of Debrecen; National Institute of Science Education & Research (NISER); Panjab University; University of Delhi; Saha Institute of Nuclear Physics; Bhabha Atomic Research Center (BARC); Tata Institute of Fundamental Research (TIFR); Indian Institute of Science Education & Research (IISER) Pune; University College Dublin; Istituto Nazionale di Fisica Nucleare (INFN); Universita degli Studi di Bari Aldo Moro; Politecnico di Bari; University of Bologna; University of Catania; University of Florence; University of Genoa; University of Milano-Bicocca; University of Naples Federico II; University of Basilicata; Guglielmo Marconi University; University of Padua; University of Trento; University of Pavia; University of Perugia; University of Pisa; Scuola Normale Superiore di Pisa; Sapienza University Rome; University of Turin; University of Eastern Piedmont Amedeo Avogadro; University of Trieste; Kangwon National University; Kyungpook National University; Jeonbuk National University; Chonnam National University; Korea University; Seoul National University (SNU); University of Seoul; Sungkyunkwan University (SKKU); Vilnius University; Universiti Malaya; CINVESTAV - Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional; Instituto Politecnico Nacional - Mexico; Universidad Iberoamericana Ciudad de Mexico; Benemerita Universidad Autonoma de Puebla; Universidad Autonoma de San Luis Potosi; University of Auckland; University of Canterbury; National Centre for Physics - Pakistan; Quaid I Azam University; National Centre for Nuclear Research; University of Warsaw; Laboratorio de Instrumentacao e Fisica Experimental de Particulas; Joint Institute for Nuclear Research - Russia; National Research Centre - Kurchatov Institute; Petersburg Nuclear Physics Institute; Russian Academy of Sciences; Institute for Nuclear Research of the Russian Academy of Sciences; Alikhanov Institute for Theoretical & Experimental Physics; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); Russian Academy of Science Lebedev Physical Institute; Lomonosov Moscow State University; Institute of High Energy Physics - IHEP; University of Belgrade; Centro de Investigaciones Energeticas, Medioambientales Tecnologicas; Autonomous University of Madrid; University of Oviedo; Consejo Superior de Investigaciones Cientificas (CSIC); Universidad de Cantabria; CSIC - Instituto de Fisica de Cantabria (IFCA); European Organization for Nuclear Research (CERN); Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; ETH Zurich; University of Zurich; National Central University; National Taiwan University; Chulalongkorn University; Cukurova University; Middle East Technical University; Bogazici University; Istanbul Technical University; National Academy of Sciences Ukraine; Institute for Scintillation Materials of the National Academy of Sciences of Ukraine; Kharkov Institute of Physics & Technology; University of Bristol; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); STFC Rutherford Appleton Laboratory; Imperial College London; Brunel University; Baylor University; University of Alabama Tuscaloosa; Boston University; Brown University; University of California System; University of California Davis; University of California Los Angeles; University of California Riverside; University of California San Diego; University of California Santa Barbara; California Institute of Technology; Carnegie Mellon University; University of Colorado System; University of Colorado Boulder; Cornell University; United States Department of Energy (DOE); University of Chicago; Fermi National Accelerator Laboratory; State University System of Florida; University of Florida; Florida International University; Florida State University; Florida Institute of Technology; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Iowa; Johns Hopkins University; University of Kansas; Kansas State University; Lawrence Livermore National Laboratory; University System of Maryland; University of Maryland College Park; Massachusetts Institute of Technology (MIT); University of Minnesota System; University of Minnesota Twin Cities; University of Mississippi; University of Nebraska System; University of Nebraska Lincoln; State University of New York (SUNY) System; State University of New York (SUNY) Buffalo; Northeastern University; Northwestern University; University of Notre Dame; University System of Ohio; Ohio State University; Princeton University; Purdue University System; Purdue University; Purdue University West Lafayette Campus; Rice University; University of Rochester; Rockefeller University; Rutgers State University New Brunswick; University of Tennessee System; University of Tennessee Knoxville; Texas A&M University System; Texas A&M University College Station; Texas Tech University System; Texas Tech University; Vanderbilt University; University of Virginia; Wayne State University; University of Wisconsin System; University of Wisconsin Madison; Technische Universitat Wien; Universidade Estadual de Campinas; Ain Shams University; Suez University; Cairo University; Brandenburg University of Technology Cottbus; Eotvos Lorand University; Visva Bharati University; University Ruhuna; Isfahan University of Technology; University of Tehran; Islamic Azad University; University of Siena; International Islamic University Malaysia; Peter the Great St. Petersburg Polytechnic University; National Technical University of Athens; Warsaw University of Technology; University of Bern; Adiyaman University; Mersin University; Cag University - Turkey; Piri Reis University; Gaziosmanpasa University; Ozyegin University; Izmir Institute of Technology; Mimar Sinan Guzel Sanatlar University; Marmara University; Kafkas University; Yildiz Technical University; University of Southampton; Instituto de Astrofisica de Canarias; Utah System of Higher Education; Utah Valley University; Argonne National Laboratory; Erzincan Binali Yildirim University; Hacettepe University; Qatar Foundation (QF); Texas A&M University Qatar
    Results are presented of a search for heavy particles decaying into two photons. The analysis is based on a 19.7fb⁻¹ sample of proton–proton collisions at \(\sqrt{s}\) = 8 TeV collected with the CMS detector at the CERN LHC. The diphoton mass spectrum from 150 to 850 GeV is used to search for an excess of events over the background. The search is extended to new resonances with natural widths of up to 10% of the mass value. No evidence for new particle production is observed and limits at 95% confidence level on the production cross section times branching fraction to diphotons are determined. These limits are interpreted in terms of two-Higgs-doublet model parameters.
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    Search for neutral resonances decaying into a Z boson and a pair of b jets or tau leptons
    (Elsevier, 2016) CMS Collaboration; Charaf, O.; Cooper, S.I.; Henderson, C.; Rumerio, P.; Yerevan Physics Institute; Belarusian State University; National Center of Particles & High Energy Physics - Belarus; University of Antwerp; Vrije Universiteit Brussel; Universite Libre de Bruxelles; Ghent University; Universite Catholique Louvain; University of Mons; Centro Brasileiro de Pesquisas Fisicas; Universidade do Estado do Rio de Janeiro; Universidade Estadual Paulista; Universidade Federal do ABC (UFABC); Bulgarian Academy of Sciences; University of Sofia; Chinese Academy of Sciences; Institute of High Energy Physics, CAS; Peking University; Universidad de los Andes (Colombia); University of Split; Rudjer Boskovic Institute; University of Cyprus; Charles University Prague; Egyptian Academy of Scientific Research & Technology (ASRT); Egyptian Knowledge Bank (EKB); Egyptian Network of High Energy Physics (ENHEP); National Institute of Chemical Physics & Biophysics (NICPB); University of Helsinki; Helsinki Institute of Physics; Lappeenranta University of Technology; CEA; UDICE-French Research Universities; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute of Nuclear and Particle Physics (IN2P3); Institut Polytechnique de Paris; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Universite de Haute-Alsace (UHA); Universite Claude Bernard Lyon 1; Georgian Technical University; Ivane Javakhishvili Tbilisi State University; RWTH Aachen University; Helmholtz Association; Deutsches Elektronen-Synchrotron (DESY); University of Hamburg; Karlsruhe Institute of Technology; National Centre of Scientific Research "Demokritos"; National & Kapodistrian University of Athens; University of Ioannina; Eotvos Lorand Research Network; Hungarian Academy of Sciences; Hungarian Wigner Research Centre for Physics; Hungarian Institute for Nuclear Research; University of Debrecen; National Institute of Science Education & Research (NISER); Panjab University; University of Delhi; Saha Institute of Nuclear Physics; Bhabha Atomic Research Center (BARC); Tata Institute of Fundamental Research (TIFR); Indian Institute of Science Education & Research (IISER) Pune; University College Dublin; Istituto Nazionale di Fisica Nucleare (INFN); Universita degli Studi di Bari Aldo Moro; Politecnico di Bari; University of Bologna; University of Catania; University of Florence; University of Genoa; University of Milano-Bicocca; University of Naples Federico II; University of Basilicata; Guglielmo Marconi University; University of Padua; University of Trento; University of Pavia; University of Perugia; University of Pisa; Scuola Normale Superiore di Pisa; Sapienza University Rome; University of Turin; University of Eastern Piedmont Amedeo Avogadro; University of Trieste; Kangwon National University; Kyungpook National University; Jeonbuk National University; Chonnam National University; Korea University; Seoul National University (SNU); University of Seoul; Sungkyunkwan University (SKKU); Vilnius University; Universiti Malaya; CINVESTAV - Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional; Instituto Politecnico Nacional - Mexico; Universidad Iberoamericana Ciudad de Mexico; Benemerita Universidad Autonoma de Puebla; Universidad Autonoma de San Luis Potosi; University of Auckland; University of Canterbury; National Centre for Physics - Pakistan; Quaid I Azam University; National Centre for Nuclear Research; University of Warsaw; Laboratorio de Instrumentacao e Fisica Experimental de Particulas; Joint Institute for Nuclear Research - Russia; National Research Centre - Kurchatov Institute; Petersburg Nuclear Physics Institute; Russian Academy of Sciences; Institute for Nuclear Research of the Russian Academy of Sciences; Alikhanov Institute for Theoretical & Experimental Physics; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute); Russian Academy of Science Lebedev Physical Institute; Lomonosov Moscow State University; Institute of High Energy Physics - IHEP; University of Belgrade; Centro de Investigaciones Energeticas, Medioambientales Tecnologicas; Autonomous University of Madrid; University of Oviedo; Consejo Superior de Investigaciones Cientificas (CSIC); Universidad de Cantabria; CSIC - Instituto de Fisica de Cantabria (IFCA); European Organization for Nuclear Research (CERN); Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; ETH Zurich; University of Zurich; National Central University; National Taiwan University; Chulalongkorn University; Cukurova University; Middle East Technical University; Bogazici University; Istanbul Technical University; National Academy of Sciences Ukraine; Institute for Scintillation Materials of the National Academy of Sciences of Ukraine; Kharkov Institute of Physics & Technology; University of Bristol; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); STFC Rutherford Appleton Laboratory; Imperial College London; Brunel University; Baylor University; University of Alabama Tuscaloosa; Boston University; Brown University; University of California System; University of California Davis; University of California Los Angeles; University of California Riverside; University of California San Diego; University of California Santa Barbara; California Institute of Technology; Carnegie Mellon University; University of Colorado System; University of Colorado Boulder; Cornell University; United States Department of Energy (DOE); University of Chicago; Fermi National Accelerator Laboratory; State University System of Florida; University of Florida; Florida International University; Florida State University; Florida Institute of Technology; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Iowa; Johns Hopkins University; University of Kansas; Kansas State University; Lawrence Livermore National Laboratory; University System of Maryland; University of Maryland College Park; Massachusetts Institute of Technology (MIT); University of Minnesota System; University of Minnesota Twin Cities; University of Mississippi; University of Nebraska System; University of Nebraska Lincoln; State University of New York (SUNY) System; State University of New York (SUNY) Buffalo; Northeastern University; Northwestern University; University of Notre Dame; University System of Ohio; Ohio State University; Princeton University; University of Puerto Rico; University of Puerto Rico Mayaguez; Purdue University System; Purdue University; Purdue University West Lafayette Campus; Rice University; University of Rochester; Rutgers State University New Brunswick; University of Tennessee System; University of Tennessee Knoxville; Texas A&M University System; Texas A&M University College Station; Texas Tech University System; Texas Tech University; Vanderbilt University; University of Virginia; Wayne State University; University of Wisconsin System; University of Wisconsin Madison; Technische Universitat Wien; Universidade Estadual de Campinas; Ain Shams University; Zewail City of Science & Technology; British University in Egypt; Indian Institute of Science Education & Research (IISER) - Bhopal; Brandenburg University of Technology Cottbus; Eotvos Lorand University; Visva Bharati University; King Abdulaziz University; University Ruhuna; Isfahan University of Technology; University of Tehran; Islamic Azad University; University of Siena; Hanyang University; International Islamic University Malaysia; Agensi Nuklear Malaysia; Warsaw University of Technology; Peter the Great St. Petersburg Polytechnic University; National Technical University of Athens; University of Bern; Adiyaman University; Mersin University; Cag University - Turkey; Piri Reis University; Gaziosmanpasa University; Ozyegin University; Izmir Institute of Technology; Marmara University; Kafkas University; Mimar Sinan Guzel Sanatlar University; Yildiz Technical University; Hacettepe University; University of Southampton; Instituto de Astrofisica de Canarias; Utah System of Higher Education; Utah Valley University; Argonne National Laboratory; Erzincan Binali Yildirim University; Qatar Foundation (QF); Texas A&M University Qatar
    A search is performed for a new resonance decaying into a lighter resonance and a Z boson. Two channels are studied, targeting the decay of the lighter resonance into either a pair of oppositely charged τ leptons or a \(b\stackrel{‾}{b}\) pair. The Z boson is identified via its decays to electrons or muons. The search exploits data collected by the CMS experiment at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.8 fb\(^{−1}\). No significant deviations are observed from the standard model expectation and limits are set on production cross sections and parameters of two-Higgs-doublet models.