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Tevatron constraints on models of the Higgs boson with exotic spin and parity using decays to bottom-antibottom quark pairs

. 2015 Apr 17 ; 114 (15) : 151802. [epub] 20150415

Status PubMed-not-MEDLINE Language English Country United States Media print-electronic

Document type Journal Article

Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value JP=0+. Both collaborations analyzed approximately 10 fb(-) of proton-antiproton collisions with a center-of-mass energy of 1.96 TeV collected at the Fermilab Tevatron. Two models predicting exotic Higgs bosons with JP=0- and JP=2+ are tested. The kinematic properties of exotic Higgs boson production in association with a vector boson differ from those predicted for the standard model Higgs boson. Upper limits at the 95% credibility level on the production rates of the exotic Higgs bosons, expressed as fractions of the standard model Higgs boson production rate, are set at 0.36 for both the JP=0- hypothesis and the JP=2+ hypothesis. If the production rate times the branching ratio to a bottom-antibottom pair is the same as that predicted for the standard model Higgs boson, then the exotic bosons are excluded with significances of 5.0 standard deviations and 4.9 standard deviations for the JP=0- and JP=2+ hypotheses, respectively.

2 Physikalisches Institut Georg August Universität Göttingen Göttingen Germany

3 Physikalisches Institut A RWTH Aachen University Aachen Germany

Argonne National Laboratory Argonne Illinois 60439 USA

Baylor University Waco Texas 76798 USA

Brookhaven National Laboratory Upton New York 11973 USA

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CEA Irfu SPP Saclay France

Center for High Energy Physics Kyungpook National University Daegu 702 701 Korea; Seoul National University Seoul 151 742 Korea; Sungkyunkwan University Suwon 440 746 Korea; Korea Institute of Science and Technology Information Daejeon 305 806 Korea; Chonnam National University Gwangju 500 757 Korea; Chonbuk National University Jeonju 561 756 Korea; Ewha Womans University Seoul 120 750 Korea

Centro de Investigaciones Energeticas Medioambientales y Tecnologicas E 28040 Madrid Spain

Charles University Faculty of Mathematics and Physics Center for Particle Physics Prague Czech Republic

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Comenius University 842 48 Bratislava Slovakia; Institute of Experimental Physics 040 01 Kosice Slovakia

CPPM Aix Marseille Université CNRS IN2P3 Marseille France

Czech Technical University Prague Prague Czech Republic

Delhi University Delhi India

Division of High Energy Physics Department of Physics University of Helsinki FIN 00014 Helsinki Finland; Helsinki Institute of Physics FIN 00014 Helsinki Finland

Duke University Durham North Carolina 27708 USA

Enrico Fermi Institute University of Chicago Chicago Illinois 60637 USA

Ernest Orlando Lawrence Berkeley National Laboratory Berkeley California 94720 USA

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA

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Glasgow University Glasgow G12 8QQ United Kingdom

Gruppo Collegato di Udine

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Institut für Physik Universität Mainz Mainz Germany

Institute for High Energy Physics Protvino Russia

Institute of Physics Academia Sinica Taipei Taiwan 11529 Republic of China

Institute of Physics Academy of Sciences of the Czech Republic Prague Czech Republic

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Instituto de Fisica de Cantabria CSIC University of Cantabria 39005 Santander Spain

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