https://doi.org/10.1140/epjc/s10052-015-3820-z
Regular Article - Experimental Physics
Search for an additional, heavy Higgs boson in the
decay channel at
in
collision data with the ATLAS detector
1
Department of Physics, University of Adelaide, Adelaide, Australia
2
Physics Department, SUNY Albany, Albany, NY, USA
3
Department of Physics, University of Alberta, Edmonton, AB, Canada
4
Department of Physics, Ankara University, Ankara, Turkey
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Istanbul Aydin University, Istanbul, Turkey
6
Division of Physics, TOBB University of Economics and Technology, Ankara, Turkey
7
LAPP, CNRS/IN2P3 and Université Savoie Mont Blanc, Annecy-le-Vieux, France
8
High Energy Physics Division, Argonne National Laboratory, Argonne, IL, USA
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Department of Physics, University of Arizona, Tucson, AZ, USA
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Department of Physics, The University of Texas at Arlington, Arlington, TX, USA
11
Physics Department, University of Athens, Athens, Greece
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Physics Department, National Technical University of Athens, Zografou, Greece
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Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan
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Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona, Barcelona, Spain
15
Institute of Physics, University of Belgrade, Belgrade, Serbia
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Department for Physics and Technology, University of Bergen, Bergen, Norway
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Physics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley, CA, USA
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Department of Physics, Humboldt University, Berlin, Germany
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Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland
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School of Physics and Astronomy, University of Birmingham, Birmingham, UK
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Department of Physics, Bogazici University, Istanbul, Turkey
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Department of Physics Engineering, Gaziantep University, Gaziantep, Turkey
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Department of Physics, Dogus University, Istanbul, Turkey
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INFN Sezione di Bologna, Bologna, Italy
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Dipartimento di Fisica e Astronomia, Università di Bologna, Bologna, Italy
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Physikalisches Institut, University of Bonn, Bonn, Germany
27
Department of Physics, Boston University, Boston, MA, USA
28
Department of Physics, Brandeis University, Waltham, MA, USA
29
Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil
30
Electrical Circuits Department, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Brazil
31
Federal University of Sao Joao del Rei (UFSJ), Sao Joao del Rei, Brazil
32
Instituto de Fisica, Universidade de Sao Paulo, São Paulo, Brazil
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Physics Department, Brookhaven National Laboratory, Upton, NY, USA
34
National Institute of Physics and Nuclear Engineering, Bucharest, Romania
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Physics Department, National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj Napoca, Romania
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University Politehnica Bucharest, Bucharest, Romania
37
West University in Timisoara, Timisoara, Romania
38
Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina
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Cavendish Laboratory, University of Cambridge, Cambridge, UK
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Department of Physics, Carleton University, Ottawa, ON, Canada
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CERN, Geneva, Switzerland
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Enrico Fermi Institute, University of Chicago, Chicago, IL, USA
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Departamento de Física, Pontificia Universidad Católica de Chile, Santiago, Chile
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Departamento de Física, Universidad Técnica Federico Santa María, Valparaiso, Chile
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Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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Department of Modern Physics, University of Science and Technology of China, Anhui, China
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Department of Physics, Nanjing University, Jiangsu, China
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School of Physics, Shandong University, Shandong, China
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Department of Physics and Astronomy, Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University, Shanghai, China
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Physics Department, Tsinghua University, Beijing, 100084, China
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Laboratoire de Physique Corpusculaire, Clermont Université and Université Blaise Pascal and CNRS/IN2P3, Clermont-Ferrand, France
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Nevis Laboratory, Columbia University, Irvington, NY, USA
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Niels Bohr Institute, University of Copenhagen, Kobenhavn, Denmark
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INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, Frascati, Italy
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Dipartimento di Fisica, Università della Calabria, Rende, Italy
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AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland
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Marian Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland
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Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
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Physics Department, Southern Methodist University, Dallas, TX, USA
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Physics Department, University of Texas at Dallas, Richardson, TX, USA
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DESY, Hamburg and Zeuthen, Germany
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Institut für Experimentelle Physik IV, Technische Universität Dortmund, Dortmund, Germany
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Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
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Department of Physics, Duke University, Durham, NC, USA
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SUPA-School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
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INFN Laboratori Nazionali di Frascati, Frascati, Italy
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Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg, Germany
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Section de Physique, Université de Genève, Geneva, Switzerland
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INFN Sezione di Genova, Genova, Italy
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Dipartimento di Fisica, Università di Genova, Genova, Italy
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E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia
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High Energy Physics Institute, Tbilisi State University, Tbilisi, Georgia
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II Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen, Germany
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SUPA-School of Physics and Astronomy, University of Glasgow, Glasgow, UK
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II Physikalisches Institut, Georg-August-Universität, Göttingen, Germany
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Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS/IN2P3, Grenoble, France
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Department of Physics, Hampton University, Hampton, VA, USA
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Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, MA, USA
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Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
80
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
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ZITI Institut für technische Informatik, Ruprecht-Karls-Universität Heidelberg, Mannheim, Germany
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Faculty of Applied Information Science, Hiroshima Institute of Technology, Hiroshima, Japan
83
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
84
Department of Physics, The University of Hong Kong, Hong Kong, China
85
Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
86
Department of Physics, Indiana University, Bloomington, IN, USA
87
Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität, Innsbruck, Austria
88
University of Iowa, Iowa City, IA, USA
89
Department of Physics and Astronomy, Iowa State University, Ames, IA, USA
90
Joint Institute for Nuclear Research, JINR Dubna, Dubna, Russia
91
KEK, High Energy Accelerator Research Organization, Tsukuba, Japan
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Graduate School of Science, Kobe University, Kobe, Japan
93
Faculty of Science, Kyoto University, Kyoto, Japan
94
Kyoto University of Education, Kyoto, Japan
95
Department of Physics, Kyushu University, Fukuoka, Japan
96
Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
97
Physics Department, Lancaster University, Lancaster, UK
98
INFN Sezione di Lecce, Lecce, Italy
99
Dipartimento di Matematica e Fisica, Università del Salento, Lecce, Italy
100
Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK
101
Department of Physics, Jožef Stefan Institute and University of Ljubljana, Ljubljana, Slovenia
102
School of Physics and Astronomy, Queen Mary University of London, London, UK
103
Department of Physics, Royal Holloway University of London, Surrey, UK
104
Department of Physics and Astronomy, University College London, London, UK
105
Louisiana Tech University, Ruston, LA, USA
106
Laboratoire de Physique Nucléaire et de Hautes Energies, UPMC and Université Paris-Diderot and CNRS/IN2P3, Paris, France
107
Fysiska institutionen, Lunds universitet, Lund, Sweden
108
Departamento de Fisica Teorica C-15, Universidad Autonoma de Madrid, Madrid, Spain
109
Institut für Physik, Universität Mainz, Mainz, Germany
110
School of Physics and Astronomy, University of Manchester, Manchester, UK
111
CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France
112
Department of Physics, University of Massachusetts, Amherst, MA, USA
113
Department of Physics, McGill University, Montreal, QC, Canada
114
School of Physics, University of Melbourne, Melbourne, VIC, Australia
115
Department of Physics, The University of Michigan, Ann Arbor, MI, USA
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Department of Physics and Astronomy, Michigan State University, East Lansing, MI, USA
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INFN Sezione di Milano, Milano, Italy
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Dipartimento di Fisica, Università di Milano, Milano, Italy
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B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Republic of Belarus
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National Scientific and Educational Centre for Particle and High Energy Physics, Minsk, Republic of Belarus
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Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
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Group of Particle Physics, University of Montreal, Montreal, QC, Canada
123
P.N. Lebedev Institute of Physics, Academy of Sciences, Moscow, Russia
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Institute for Theoretical and Experimental Physics (ITEP), Moscow, Russia
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National Research Nuclear University MEPhI, Moscow, Russia
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D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow, Russia
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Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany
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Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany
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Nagasaki Institute of Applied Science, Nagasaki, Japan
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Graduate School of Science and Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan
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INFN Sezione di Napoli, Naples, Italy
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Dipartimento di Fisica, Università di Napoli, Napoli, Italy
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Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USA
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Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen, The Netherlands
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Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, The Netherlands
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Department of Physics, Northern Illinois University, DeKalb, IL, USA
137
Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, Russia
138
Department of Physics, New York University, New York, NY, USA
139
Ohio State University, Columbus, OH, USA
140
Faculty of Science, Okayama University, Okayama, Japan
141
Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK, USA
142
Department of Physics, Oklahoma State University, Stillwater, OK, USA
143
Palacký University, RCPTM, Olomouc, Czech Republic
144
Center for High Energy Physics, University of Oregon, Eugene, OR, USA
145
LAL, Université Paris-Sud and CNRS/IN2P3, Orsay, France
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Graduate School of Science, Osaka University, Osaka, Japan
147
Department of Physics, University of Oslo, Oslo, Norway
148
Department of Physics, Oxford University, Oxford, UK
149
INFN Sezione di Pavia, Pavia, Italy
150
Dipartimento di Fisica, Università di Pavia, Pavia, Italy
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Department of Physics, University of Pennsylvania, Philadelphia, PA, USA
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National Research Centre ‘Kurchatov Institute’ B.P.Konstantinov Petersburg Nuclear Physics Institute, St. Petersburg, Russia
153
INFN Sezione di Pisa, Pisa, Italy
154
Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy
155
Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA, USA
156
Laboratório de Instrumentação e Física Experimental de Partículas-LIP, Lisboa, Portugal
157
Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
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Department of Physics, University of Coimbra, Coimbra, Portugal
159
Centro de Física Nuclear da Universidade de Lisboa, Lisboa, Portugal
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Departamento de Fisica, Universidade do Minho, Braga, Portugal
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Departamento de Fisica Teorica y del Cosmos and CAFPE, Universidad de Granada, Granada, Spain
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Dep Fisica and CEFITEC of Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
163
Institute of Physics, Academy of Sciences of the Czech Republic, Praha, Czech Republic
164
Czech Technical University in Praha, Praha, Czech Republic
165
Faculty of Mathematics and Physics, Charles University in Prague, Praha, Czech Republic
166
State Research Center Institute for High Energy Physics, Protvino, Russia
167
Particle Physics Department, Rutherford Appleton Laboratory, Didcot, UK
168
INFN Sezione di Roma, Roma, Italy
169
Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
170
INFN Sezione di Roma Tor Vergata, Roma, Italy
171
Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy
172
INFN Sezione di Roma Tre, Roma, Italy
173
Dipartimento di Matematica e Fisica, Università Roma Tre, Rome, Italy
174
Faculté des Sciences Ain Chock, Réseau Universitaire de Physique des Hautes Energies-Université Hassan II, Casablanca, Morocco
175
Centre National de l’Energie des Sciences Techniques Nucleaires, Rabat, Morocco
176
Faculté des Sciences Semlalia, Université Cadi Ayyad, LPHEA-Marrakech, Marrakech, Morocco
177
Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda, Morocco
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Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco
179
DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers), CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives), Gif-sur-Yvette, France
180
Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA, USA
181
Department of Physics, University of Washington, Seattle, WA, USA
182
Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
183
Department of Physics, Shinshu University, Nagano, Japan
184
Fachbereich Physik, Universität Siegen, Siegen, Germany
185
Department of Physics, Simon Fraser University, Burnaby, BC, Canada
186
SLAC National Accelerator Laboratory, Stanford, CA, USA
187
Faculty of Mathematics, Physics & Informatics, Comenius University, Bratislava, Slovak Republic
188
Department of Subnuclear Physics, Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovak Republic
189
Department of Physics, University of Cape Town, Cape Town, South Africa
190
Department of Physics, University of Johannesburg, Johannesburg, South Africa
191
School of Physics, University of the Witwatersrand, Johannesburg, South Africa
192
Department of Physics, Stockholm University, Stockholm, Sweden
193
The Oskar Klein Centre, Stockholm, Sweden
194
Physics Department, Royal Institute of Technology, Stockholm, Sweden
195
Departments of Physics & Astronomy and Chemistry, Stony Brook University, Stony Brook, NY, USA
196
Department of Physics and Astronomy, University of Sussex, Brighton, UK
197
School of Physics, University of Sydney, Sydney, Australia
198
Institute of Physics, Academia Sinica, Taipei, Taiwan
199
Department of Physics, Technion: Israel Institute of Technology, Haifa, Israel
200
Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
201
Department of Physics, Aristotle University of Thessaloniki, Thessaloníki, Greece
202
International Center for Elementary Particle Physics and Department of Physics, The University of Tokyo, Tokyo, Japan
203
Graduate School of Science and Technology, Tokyo Metropolitan University, Tokyo, Japan
204
Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
205
Department of Physics, University of Toronto, Toronto, ON, Canada
206
TRIUMF, Vancouver, BC, Canada
207
Department of Physics and Astronomy, York University, Toronto, ON, Canada
208
Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan
209
Department of Physics and Astronomy, Tufts University, Medford, MA, USA
210
Centro de Investigaciones, Universidad Antonio Narino, Bogotá, Colombia
211
Department of Physics and Astronomy, University of California Irvine, Irvine, CA, USA
212
INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
213
ICTP, Trieste, Italy
214
Dipartimento di Chimica, Fisica e Ambiente, Università di Udine, Udine, Italy
215
Department of Physics, University of Illinois, Urbana, IL, USA
216
Department of Physics and Astronomy, University of Uppsala, Uppsala, Sweden
217
Instituto de Física Corpuscular (IFIC) and Departamento de Física Atómica, Molecular y Nuclear and Departamento de Ingeniería Electrónica and Instituto de Microelectrónica de Barcelona (IMB-CNM), University of Valencia and CSIC, Valencia, Spain
218
Department of Physics, University of British Columbia, Vancouver, BC, Canada
219
Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
220
Department of Physics, University of Warwick, Coventry, UK
221
Waseda University, Tokyo, Japan
222
Department of Particle Physics, The Weizmann Institute of Science, Rehovot, Israel
223
Department of Physics, University of Wisconsin, Madison, WI, USA
224
Fakultät für Physik und Astronomie, Julius-Maximilians-Universität, Würzburg, Germany
225
Fachbereich C Physik, Bergische Universität Wuppertal, Wuppertal, Germany
226
Department of Physics, Yale University, New Haven, CT, USA
227
Yerevan Physics Institute, Yerevan, Armenia
228
Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules (IN2P3), Villeurbanne, France
229
CERN, Geneva, Switzerland
* e-mail: atlas.publications@cern.ch
Received:
22
July
2015
Accepted:
1
December
2015
Published online:
25
January
2016
A search is presented for a high-mass Higgs boson in the ,
,
, and
decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton–proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb
. The results of the search are interpreted in the scenario of a heavy Higgs boson with a width that is small compared with the experimental mass resolution. The Higgs boson mass range considered extends up to
for all four decay modes and down to as low as 140
, depending on the decay mode. No significant excess of events over the Standard Model prediction is found. A simultaneous fit to the four decay modes yields upper limits on the production cross-section of a heavy Higgs boson times the branching ratio to
boson pairs. 95 % confidence level upper limits range from 0.53 pb at
GeV to 0.008 pb at
GeV for the gluon-fusion production mode and from 0.31 pb at
GeV to 0.009 pb at
GeV for the vector-boson-fusion production mode. The results are also interpreted in the context of Type-I and Type-II two-Higgs-doublet models.
© CERN for the benefit of the ATLAS collaboration, 2016