Measurements of jet multiplicity and differential production cross sections of Z+jets events in proton-proton collisions at sqrt(s)=7TeV

Measurements of differential cross sections are presented for the production of a Z boson and at least one hadronic jet in proton-proton collisions at root s = 7 TeV, recorded by the CMS detector, using a data sample corresponding to an integrated luminosity of 4.9 fb(-1). The jet multiplicity distribution is measured for up to six jets. The differential cross sections are measured as a function of jet transverse momentum and pseudorapidity for the four highest transverse momentum jets. The distribution of the scalar sum of jet transverse momenta is also measured as a function of the jet multiplicity. The measurements are compared with theoretical predictions at leading and next-to-leading order in perturbative QCD.Austrian Federal Ministry of Science, Research and EconomyAustrian Science FundBelgian Fonds de la Recherche ScientifiqueFonds voor Wetenschappelijk OnderzoekConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Bulgarian Ministry of Education and ScienceCERNChinese Academy of SciencesMinistry of Science and TechnologyNational Natural ScienceFoundationofChinaColombian FundingAgency (COLCIENCIAS)Croatian Ministry of Science, Education, and SportCroatian Science FoundationResearch Promotion Foundation, CyprusMinistry of Education and Research, EstoniaEstonian Research Council, EstoniaEuropean Regional Development Fund, EstoniaAcademy of FinlandFinnish Ministry of Education and CultureHelsinki Institute of PhysicsInstitut National de Physique Nucleaire et de Physique des Particules / CNRS, FranceCommissariat a l'Energie Atomique et aux Energies Alternatives / CEA, FranceBundesministerium fur Bildung und Forschung, GermanyDeutsche Forschungsgemeinschaft, GermanyHelmholtz-Gemeinschaft Deutscher Forschungs zentren, GermanyGeneral Secretariat for Research and Technology, GreeceNational Scientific Research Foundation, HungaryNational Innovation Office, HungaryDepartment of Atomic Energy, IndiaDepartment of Science and Technology, IndiaInstitute for Studies in Theoretical Physics and Mathematics, IranScience Foundation, IrelandIstituto Nazionale di Fisica Nucleare, ItalyKorean Ministry of Education, Science and Technology, Republic of KoreaWorld Class University program of NRF, Republic of KoreaLithuanian Academy of SciencesMinistry of Education, and University of Malaya (Malaysia)Mexican Funding Agency (CINVESTAV)Mexican Funding Agency (CONACYT)Mexican Funding Agency (SEP)Mexican Funding Agency (UASLP-FAI)Ministry of Business, Innovation and Employment, New ZealandPakistan Atomic Energy CommissionMinistry of Science and Higher Education, PolandNational Science Centre, PolandFundacao para a Cienciaea Tecnologia, PortugalJINR, DubnaMinistry of Education and Science of the Russian FederationFederal Agency of Atomic Energy of the Russian FederationRussian Academy of SciencesRussian Foundation for Basic ResearchMinistry of Education, Science and Technological Development of SerbiaSecretaria de Estado de Investigacion, Desarrollo e Innovacion and Programa Consolider-Ingenio, SpainSwiss Funding Agency (ETH Board)Swiss Funding Agency (ETH Zurich)Swiss Funding Agency (PSI)Swiss Funding Agency (SNF)Swiss Funding Agency (UniZH)Swiss Funding Agency (Canton Zurich)Swiss Funding Agency (SER)Ministry of Science and Technology, TaipeiThailand Center of Excellence in PhysicsInstitute for the Promotion of Teaching Science andTechnologyofThailandSpecialTaskForceforActivating ResearchNational Science and Technology Development Agency of ThailandScientific and Technical Research Council of TurkeyTurkish Atomic Energy AuthorityNational Academy of Sciences of Ukraine, UkraineState Fund for Fundamental Researches, UkraineScience and Technology Facilities Council, United KingdomU.S. Department of EnergyU.S. National Science FoundationMarie Curie programEuropean Research CouncilEPLANET (European Union)Leventis FoundationA. 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Sloan FoundationAlexander von Humboldt FoundationBelgian Federal Science Policy OfficeFonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)Ministry of Education, Youth and Sports (MEYS) of the Czech RepublicCouncil ofScienceandIndustrialResearch, IndiaHOMINGPLUS program of Foundation for Polish ScienceEuropean UnionRegional Development FundCompagnia di San Paolo (Torino)Consorzio per la Fisica (Trieste)MIUR (Italy)Thalis and Aristeia programsEU-ESFGreekNSRFNationalPrioritiesResearchProgram by Qatar National Research FundYerevan Phys Inst, Yerevan 375036, ArmeniaInst Hochenergiephys OeAW, Vienna, AustriaNatl Ctr Particle &High Energy Phys, Minsk, ByelarusUniv Antwerp, Antwerp, BelgiumVrije Univ Brussel, Brussels, BelgiumUniv Libre Bruxelles, Brussels, BelgiumUniv Ghent, B-9000 Ghent, BelgiumCatholic Univ Louvain, Louvain La Neuve, BelgiumUniv Mons, B-7000 Mons, BelgiumCtr Brasileiro Pesquisas Fis, Rio De Janeiro, BrazilUniv Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, BrazilUniv Estadual Paulista, Sao Paulo, BrazilUniv Fed ABC, Sao Paulo, BrazilInst Nucl Energy Res, Sofia, BulgariaUniv Sofia, BU-1126 Sofia, BulgariaInst High Energy Phys, Beijing 100039, Peoples R ChinaPeking Univ, State Key Lab Nucl Phys &Technol, Beijing 100871, Peoples R ChinaUniv Los Andes, Bogota, ColombiaUniv Split, Fac Elect Engn, Mech Engn &Naval Architecture, Split, CroatiaUniv Split, Fac Sci, Split, CroatiaRudjer Boskovic Inst, Zagreb, CroatiaUniv Cyprus, CY-1678 Nicosia, CyprusCharles Univ Prague, Prague, Czech RepublicAcad Sci Res &Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, EgyptNICPB, Tallinn, EstoniaUniv Helsinki, Dept Phys, Helsinki, FinlandHelsinki Inst Phys, Helsinki, FinlandLappeenranta Univ Technol, Lappeenranta, FinlandCEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, FranceEcole Polytech, IN2P3 CNRS, Lab Leprince Ringuet, Palaiseau, 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Kolkata, IndiaBhabha Atom Res Ctr, Mumbai 400085, Maharashtra, IndiaTata Inst Fundamental Res, Mumbai 400005, Maharashtra, IndiaInst Res Fundamental Sci IPM, Tehran, IranUniv Coll Dublin, Dublin 2, IrelandIst Nazl Fis Nucl, Sez Bari, I-70126 Bari, ItalyUniv Bari, Bari, ItalyPolitecn Bari, Bari, ItalyIst Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, ItalyUniv Bologna, Bologna, ItalyIst Nazl Fis Nucl, Sez Catania, I-95129 Catania, ItalyUniv Catania, Catania, ItalyCSFNSM, Catania, ItalyIst Nazl Fis Nucl, Sez Firenze, I-50125 Florence, ItalyUniv Florence, Florence, ItalyIst Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, ItalyIst Nazl Fis Nucl, Sez Genova, I-16146 Genoa, ItalyUniv Genoa, Genoa, ItalyIst Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, ItalyUniv Milano Bicocca, Milan, ItalyIst Nazl Fis Nucl, Sez Napoli, I-80125 Naples, ItalyUniv Naples Federico II, Naples, ItalyUniv Basilicata Potenza, Naples, ItalyUniv G Marconi Roma, Naples, ItalyIst Nazl Fis Nucl, Sez Padova, Padua, 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Cantabria, CSIC, IFCA, E-39005 Santander, SpainCERN, European Org Nucl Res, CH-1211 Geneva, SwitzerlandPaul Scherrer Inst, Villigen, SwitzerlandETH, Inst Particle Phys, Zurich, SwitzerlandUniv Zurich, Zurich, SwitzerlandNatl Cent Univ, Chungli 32054, TaiwanNatl Taiwan Univ, Taipei 10764, TaiwanChulalongkorn Univ, Fac Sci, Dept Phys, Bangkok, ThailandCukurova Univ, Adana, TurkeyMiddle E Tech Univ, Dept Phys, TR-06531 Ankara, TurkeyBogazici Univ, Istanbul, TurkeyIstanbul Tech Univ, TR-80626 Istanbul, TurkeyKharkov Phys &Technol Inst, Natl Sci Ctr, UA-310108 Kharkov, UkraineUniv Bristol, Bristol, Avon, EnglandRutherford Appleton Lab, Didcot OX11 0QX, Oxon, EnglandUniv London Imperial Coll Sci Technol &Med, London, EnglandBrunel Univ, Uxbridge UB8 3PH, Middx, EnglandBaylor Univ, Waco, TX 76798 USAUniv Alabama, Tuscaloosa, AL USABoston Univ, Boston, MA 02215 USABrown Univ, Providence, RI 02912 USAUniv Calif Davis, Davis, CA 95616 USAUniv Calif Los Angeles, Los Angeles, CA USAUniv Calif 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Mulhouse, FranceBrandenburg Tech Univ Cottbus, Cottbus, GermanyInst Nucl Res, ATOMKI, H-4001 Debrecen, HungaryEotvos Lorand Univ, Budapest, HungaryVisva Bharati Univ, Santini Ketan, W Bengal, IndiaKing Abdulaziz Univ, Jeddah 21413, Saudi ArabiaUniv Ruhuna, Matara, Sri LankaIsfahan Univ Technol, Esfahan, IranSharif Univ Technol, Tehran, IranIslamic Azad Univ, Plasma Phys Res Ctr, Sci &Res Branch, Tehran, IranIst Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, ItalyUniv Siena, I-53100 Siena, ItalyCNRS, IN2P3, Paris, FranceUniv Michoacana, Morelia, Michoacan, MexicoSt Petersburg State Polytech Univ, St Petersburg, RussiaUniv Rome, Fac Ingn, Rome, ItalyIst Nazl Fis Nucl, Scuola Normale &Sez, Pisa, ItalyAlbert Einstein Ctr Fundamental Phys, Bern, SwitzerlandGaziosmanpasa Univ, Tokat, TurkeyAdiyaman Univ, Adiyaman, TurkeyCag Univ, Mersin, TurkeyMersin Univ, Mersin, TurkeyIzmir Inst Technol, Izmir, TurkeyOzyegin Univ, Istanbul, TurkeyMarmara Univ, Istanbul, TurkeyKafkas Univ, Kars, TurkeyMimar Sinan Univ, Istanbul, TurkeyUniv Southampton, Sch Phys &Astron, Southampton, Hants, EnglandArgonne Natl Lab, Argonne, IL 60439 USAErzincan Univ, Erzincan, TurkeyYildiz Tekn Univ, Istanbul, TurkeyTexas A&M Univ, Doha, QatarUniv Estadual Paulista, Instituto de Física Teórica (IFT), Sao Paulo, BrazilEstonian Research Council, Estonia: IUT23-4Estonian Research Council, Estonia: IUT23-6MIUR (Italy): 20108T4XT

Measurement of the triple-differential cross section for photon + jets production in proton-proton collisions at sqrt (s) = 7 TeV

A measurement of the triple-differential cross section, , in photon + jets final states using a data sample from proton-proton collisions at = 7 TeV is presented. This sample corresponds to an integrated luminosity of 2.14 fb(-1) collected by the CMS detector at the LHC. Photons and jets are reconstructed within a pseudorapidity range of |eta| 30 GeV, respectively. The measurements are compared to theoretical predictions from the sherpa leading-order QCD Monte Carlo event generator and the next-to-leading-order perturbative QCD calculation from jetphox. The predictions are found to be consistent with the data over most of the examined kinematic region.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Discutindo a educação ambiental no cotidiano escolar: desenvolvimento de projetos na escola formação inicial e continuada de professores

A presente pesquisa buscou discutir como a Educação Ambiental (EA) vem sendo trabalhada, no Ensino Fundamental e como os docentes desta escola compreendem e vem inserindo a EA no cotidiano escolar., em uma escola estadual do município de Tangará da Serra/MT, Brasil. Para tanto, realizou-se entrevistas com os professores que fazem parte de um projeto interdisciplinar de EA na escola pesquisada. Verificou-se que o projeto da escola não vem conseguindo alcançar os objetivos propostos por: desconhecimento do mesmo, pelos professores; formação deficiente dos professores, não entendimento da EA como processo de ensino-aprendizagem, falta de recursos didáticos, planejamento inadequado das atividades. A partir dessa constatação, procurou-se debater a impossibilidade de tratar do tema fora do trabalho interdisciplinar, bem como, e principalmente, a importância de um estudo mais aprofundado de EA, vinculando teoria e prática, tanto na formação docente, como em projetos escolares, a fim de fugir do tradicional vínculo “EA e ecologia, lixo e horta”.Facultad de Humanidades y Ciencias de la Educació

Searches for heavy Higgs bosons in two-Higgs-doublet models and for t - GT ch decay using multilepton and diphoton final states in pp collisions at 8 TeV

Searches are presented for heavy scalar (H) and pseudoscalar (A) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample of pp collisions collected with the CMS experiment at the LHC at a center-of-mass energy of root s = 8 TeV and corresponding to an integrated luminosity of 19.5 fb(-1). The decays H - GT hh and A - GT Zh, where h denotes an SM-like Higgs boson, lead to events with three or more isolated charged leptons or with a photon pair accompanied by one or more isolated leptons. The search results are presented in terms of the H and A production cross sections times branching fractions and are further interpreted in terms of 2HDM parameters. We place 95% C.L. cross section upper limits of approximately 7 pb on sigma B for H - GT hh and 2 pb for A - GT Zh. Also presented are the results of a search for the rare decay of the top quark that results in a charm quark and an SM Higgs boson, t - GT ch, the existence of which would indicate a nonzero flavor-changing Yukawa coupling of the top quark to the Higgs boson. We place a 95% C.L. upper limit of 0.56% on B(t - GT ch)

Search for narrow resonances using the dijet mass spectrum in pp collisions at s√=8 TeV

Results are presented of a search for the production of new particles decaying to pairs of partons (quarks, antiquarks, or gluons), in the dijet mass spectrum in proton-proton collisions at s√=8  TeV. The data sample corresponds to an integrated luminosity of 4.0  fb−1, collected with the CMS detector at the LHC in 2012. No significant evidence for narrow resonance production is observed. Upper limits are set at the 95% confidence level on the production cross section of hypothetical new particles decaying to quark-quark, quark-gluon, or gluon-gluon final states. These limits are then translated into lower limits on the masses of new resonances in specific scenarios of physics beyond the standard model. The limits reach up to 4.8 TeV, depending on the model, and extend previous exclusions from similar searches performed at lower collision energies. For the first time mass limits are set for the Randall–Sundrum graviton model in the dijet channel

Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states

Results are reported from a search for non-standard-model Higgs boson decays to pairs of new light bosons, each of which decays into the μ+μ− final state. The new bosons may be produced either promptly or via a decay chain. The data set corresponds to an integrated luminosity of 5.3 fb−1 of proton–proton collisions at sqrt(s)=7 TeV, recorded by the CMS experiment at the LHC in 2011. Such Higgs boson decays are predicted in several scenarios of new physics, including supersymmetric models with extended Higgs sectors or hidden valleys. Thus, the results of the search are relevant for establishing whether the new particle observed in Higgs boson searches at the LHC has the properties expected for a standard model Higgs boson. No excess of events is observed with respect to the yields expected from standard model processes. A model-independent upper limit of 0.86±0.06 fb on the product of the cross section times branching fraction times acceptance is obtained. The results, which are applicable to a broad spectrum of new physics scenarios, are compared with the predictions of two benchmark models as functions of a Higgs boson mass larger than 86 GeV/c2 and of a new light boson mass within the range 0.25–3.55 GeV/c2

Search for long-lived particles in events with photons and missing energy in proton–proton collisions at sqrt(s)=7 TeV

Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 inverse femtobarn sample of proton-proton collisions at √s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m(neutralino) > 220 GeV (for c tau 6000 mm (for m(neutralino) < 150 GeV)

Measurement of the Υ(1S), Υ(2S), and Υ(3S) cross sections in pp collisions at sqrt(s) = 7 TeV

The Υ(1S), Υ(2S), and Υ(3S) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8 ± 1.4 inverse picobarns of proton-proton collisions at √s = 7 TeV, collected with the CMS detector at the LHC. The Upsilon resonances are identified through their decays to dimuons. Integrated over the Υ transverse momentum range pΥt< 50GeV and rapidity range |yΥ| < 2.4, and assuming unpolarized Upsilon production, the products of the Upsilon production cross sections and dimuon branching fractions are σ(pp→Υ(1S)X).B(Υ(1S)→μ+μ−)=(8.55±0.05+0.56−0.50±0.34)nb, σ(pp→Υ(2S)X).B(Υ(2S)→μ+μ−)=(2.21±0.03+0.16−0.14±0.09)nb, σ(pp→Υ(3S)X).B(Υ(3S)→μ+μ−)=(1.11±0.02+0.10−0.08±0.04)nb, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty in the integrated luminosity. The differential cross sections in bins of transverse momentum and rapidity, and the cross section ratios are presented. Cross section measurements performed within a restricted muon kinematic range and not corrected for acceptance are also provided. These latter measurements are independent of Upsilon polarization assumptions. The results are compared to theoretical predictions and previous measurements

Search for anomalous production of highly boosted Z bosons decaying to μ+μ− in proton–proton collisions at sqrt(s)=7 TeV

Results are reported from a search for the anomalous production of highly boosted Z bosons with large transverse momentum and decaying to μ+μ-. Such Z bosons may be produced in the decays of new heavy particles. The search uses pp collision data at sqrt(s)=7 TeV, corresponding to an integrated luminosity of 5.0 fb−1 recorded with the CMS detector. The shape of the observed transverse momentum distribution of Z bosons is consistent with standard model expectations. Constraints are obtained on models predicting the production of excited quarks decaying via electroweak processes. Assuming a compositeness scale that is equal to the excited quark mass as well as transition coupling strengths between Z bosons and excited quarks that are equal to standard model couplings to quarks, masses of excited quarks below 1.94 TeV are excluded at the 95% confidence level. For excited quark production via a novel contact interaction, masses below 2.22 TeV are excluded, even if the excited quarks do not couple to gluon