Published July 10, 2016 | Version Submitted + Published
Journal Article Open

Search for a low-mass pseudoscalar Higgs boson produced in association with a bb pair in pp collisions at √s = 8 TeV

Abstract

A search is reported for a light pseudoscalar Higgs boson decaying to a pair of τ leptons, produced in association with a bb pair, in the context of two-Higgs-doublet models. The results are based on pp collision data at a centre-of-mass energy of 8 TeV collected by the CMS experiment at the LHC and corresponding to an integrated luminosity of 19.7 fb^(−1). Pseudoscalar boson masses between 25 and 80 GeV are probed. No evidence for a pseudoscalar boson is found and upper limits are set on the product of cross section and branching fraction to τ pairs between 7 and 39 pb at the 95% confidence level. This excludes pseudoscalar A bosons with masses between 25 and 80 GeV, with SM-like Higgs boson negative couplings to down-type fermions, produced in association with bb pairs, in Type II, two-Higgs-doublet models.

Additional Information

©2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Received 11 November 2015, Revised 21 April 2016, Accepted 2 May 2016, Available online 6 May 2016. Editor: M. Doser. Funded by SCOAP3. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MOST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER, ERC IUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the OPUS programme of the National Science Center (Poland); the Compagnia di San Paolo (Torino); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Research Fund; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); and the Welch Foundation, contract C-1845.

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Published - 1-s2.0-S0370269316301502-main.pdf

Submitted - 1511.03610v2.pdf

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Additional details

Identifiers

Eprint ID
68826
Resolver ID
CaltechAUTHORS:20160705-101043917

Related works

Funding

SCOAP3
Bundesministerium für Wissenschaft, Forschung und Wirtschaft (BMWFW)
Austrian Science Fund (FWF)
Fonds de la Recherche Scientifique (FNRS)
Fonds Wetenschappelijk Onderzoek - Vlaanderen (FWO)
Conselho 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 Sao Paulo (FAPESP)
Bulgarian Ministry of Education and Science (MES)
CERN
Chinese Academy of Sciences
Ministry of Science and Technology (China)
National Natural Science Foundation of China
COLCIENCIAS (Colombia)
Ministry of Science, Education and Sport (Croatia)
Croatian Science Foundation
Research Promotion Foundation, Cyprus
Ministry of Education and Research (Estonia)
Estonian Research Council
European Regional Development Fund, Estonia
Academy of Finland
Ministry of Education and Culture (Finland)
Helsinki Institute of Physics
Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) France
Centre National de la Recherche Scientifique (CNRS)
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
Bundesministerium für Bildung und Forschung (BMBF)
Deutsche Forschungsgemeinschaft (DFG)
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
General Secretariat for Research and Technology (GSRT)
Hungarian National Scientific Research Fund (OTKA)
National Innovation Office (Hungary)
Department of Atomic Energy (India)
Department of Science and Technology (India)
Institute for Studies in Theoretical Physics and Mathematics, Iran
Science Foundation, Ireland
Istituto Nazionale di Fisica Nucleare (INFN)
Ministry of Science, ICT and Future Planning (Korea)
National Research Foundation of Korea
Lithuanian Academy of Sciences
Ministry of Education (Malaysia)
Universiti Malaya
CINVESTAV (Mexico)
Ministry of Business, Innovation and Employment (New Zealand)
Pakistan Atomic Energy Commission
Ministry of Science and Higher Education (Poland)
National Science Centre (Poland)
Fundação para a Ciência e a Tecnologia (FCT)
Joint Institute for Nuclear Research (JINR)
Ministry of Education and Science of the Russian Federation
Federal Agency of Atomic Energy of the Russian Federation
Russian Academy of Sciences
Russian Foundation for Basic Research
Ministry of Education, Science and Technological Development (Serbia)
Swiss Funding Agencies
Ministry of Science and Technology (Taipei)
Thailand center of Excellence in Physics
Institute for the Promotion of Teaching Science and Technology of Thailand
Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)
Türkiye Atom Enerjisi Kurumu (TAEK)
National Academy of Sciences of Ukraine
Science and Technology Facilities Council (STFC)
Department of Energy (DOE)
NSF
Marie Curie Fellowship
European Research Council (ERC)
EPLANET
Leventis Foundation
Alfred P. Sloan Foundation
Alexander von Humboldt Foundation
Belgian Federal Science Policy Office (BELSPO)
Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
Ministry of Education, Youth and Sports (MEYS) of Czech Republic
Council of Science and Industrial Research (India)
HOMING PLUS programme of Foundation for Polish Science
European Union Regional Development Fund
OPUS programme of the National Science Center (Poland)
Compagnia di San Paolo (Torino)
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)
20108T4XTM
Thalis programme
Aristeia programme
European Social Fund
Greek National Strategic Reference Framework (NSRF)
Qatar National Research Fund National Priorities Research Program
Rachadapisek Sompot Fund for Postdoctoral Fellowship Chulalongkorn University (Thailand)
Welch Foundation
C-1845
CONACyT (Mexico)
SEP (Mexico)
UASLP-FAI (Mexico)
State Fund for Fundamental Researches, Ukraine

Dates

Created
2016-07-06
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Updated
2021-11-11
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