Higgs boson searches at the Tevatron

作     者：Gavin J. Davies 

作者机构：Imperial College London London SW7 2AZ United Kingdom 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2013年第8卷第3期

页      面：270-284页

核心收录：

学科分类：07[理学] 08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Korean World Class University Program MON MSMT Slovak R&D Agency National Science Foundation, NSF U.S. Department of Energy, USDOE Alfred P. Sloan Foundation Neurosciences Research Foundation, NRF Natural Sciences and Engineering Research Council of Canada, NSERC Science and Technology Facilities Council, STFC, (ST/H001085/1, ST/H001085/2, ST/J005568/1, ST/K000748/1, ST/K00140X/1) Science and Technology Facilities Council, STFC Royal Society Australian Research Council, ARC Department of Science and Technology, Ministry of Science and Technology, India, डीएसटी Department of Atomic Energy, Government of India, पऊवि Science Foundation Ireland, SFI Deutsche Forschungsgemeinschaft, DFG Ministry of Education, Culture, Sports, Science and Technology, Monbusho Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF Stichting voor Fundamenteel Onderzoek der Materie, FOM Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP National Natural Science Foundation of China, NSFC Grantová Agentura České Republiky, GA ČR National Science Council, NSC Russian Foundation for Basic Research, РФФИ Academy of Finland Bundesministerium für Bildung und Forschung, BMBF Chinese Academy of Sciences, CAS Consejo Nacional de Ciencia y Tecnología, CONACYT Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq Instituto Nazionale di Fisica Nucleare, INFN Vetenskapsrådet, VR Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, FAPERJ Centre National de la Recherche Scientifique, CNRS Ministerio de Ciencia e Innovación, MICINN Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Fundação para o Desenvolvimento da UNESP, FUNDUNESP Institut National de Physique Nucléaire et de Physique des Particules, IN2P3 National Research Center "Kurchatov Institute", NRC KI 

主　　题：Higgs Tevatron 

摘      要：This article reviews the Higgs searches at the Tevatron, as presented over the summer of 2012; both standard model （SM） and beyond the standard model （BSM） results are discussed as detailed （arXiv： 1207.0449; Phys. Rev. Lett., 2012, 109： 071804; Phys. Rev. D, 2012, 85： 032005）. We discuss the combination of searches by the CDF and DO Collaborations for the standard model Higgs boson in the mass range 100-200 GeV/c2 produced in the the gg →H, WH, ZH, tfH, and vector boson fusion production modes, and decaying in the H → bb, H → W＋W-, H → ZZ, H →π＋π-, and H →γγ modes. The data, collected at the Fermilab Tevatron collider in p/5 collisions at √s = 1.96 TeV, correspond to integrated luminosities of up to 10 fb^-1. In the absence of signal, we expect to exclude the regions 100 〈 mH 〈 120 GeV/c2 and 139 〈 mH 〈 184 GeV/c2. We exclude, at the 95% C.L., two regions： 100 〈 mH 〈 103 GeV/c2, and 147 〈 mH 〈 180 GeV/c2. We observe a significant excess of events in the mass range between 115 and 140 GeV/c2. The local significance corresponds to 3.0 standard deviations at mH = 120 GeV/ce; the global significance （incorporating the lookelsewhere effect） for such an excess anywhere in the full mass range investigated is approximately 2.5 standard deviations. Furthermore, we separately combine searches for H→ bb-, H → W＋W- and H →γγ. We find that the excess is concentrated in the H →bb channel, appearing in the searches over a broad range of raN; the maximum local significance of 3.3 standard deviations corresponds to a global significance of approximately 3.1 standard deviations. The observed signal strengths in all channels are consistent with the expectation for a standard model Higgs boson at mH = 125 GeV/c2. The production of neutral Higgs bosons in association with b-quarks can be significantly enhanced in various beyond the standard model scenarios, including Supersymmetry. The recent combination of such searches from the two collaborations is discussed.