https://doi.org/10.1140/epjc/s10052-020-8166-5
Regular Article - Experimental Physics
Study of central exclusive [see pdf] production in proton-proton collisions at 
and 13TeV
1
Yerevan Physics Institute, Yerevan, Armenia
2
Institut für Hochenergiephysik, Wien, Austria
3
Institute for Nuclear Problems, Minsk, Belarus
4
Universiteit Antwerpen, Antwerpen, Belgium
5
Vrije Universiteit Brussel, Brussel, Belgium
6
Université Libre de Bruxelles, Bruxelles, Belgium
7
Ghent University, Ghent, Belgium
8
Université Catholique de Louvain, Louvain-la-Neuve, Belgium
9
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
10
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
11
Universidade Estadual Paulista, Universidade Federal do ABC, São Paulo, Brazil
12
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
13
University of Sofia, Sofia, Bulgaria
14
Beihang University, Beijing, China
15
Department of Physics, Tsinghua University, Beijing, China
16
Institute of High Energy Physics, Beijing, China
17
State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
18
Universidad de Los Andes, Bogota, Colombia
19
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Split, Croatia
20
Faculty of Science, University of Split, Split, Croatia
21
Institute Rudjer Boskovic, Zagreb, Croatia
22
University of Cyprus, Nicosia, Cyprus
23
Charles University, Prague, Czech Republic
24
Escuela Politecnica Nacional, Quito, Ecuador
25
Universidad San Francisco de Quito, Quito, Ecuador
26
Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
27
National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
28
Department of Physics, University of Helsinki, Helsinki, Finland
29
Helsinki Institute of Physics, Helsinki, Finland
30
Lappeenranta University of Technology, Lappeenranta, Finland
31
IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
32
Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Paris, France
33
Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
34
Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France
35
Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France
36
Georgian Technical University, Tbilisi, Georgia
37
Tbilisi State University, Tbilisi, Georgia
38
RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
39
RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
40
RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
41
Deutsches Elektronen-Synchrotron, Hamburg, Germany
42
University of Hamburg, Hamburg, Germany
43
Karlsruher Institut fuer Technologie, Karlsruhe, Germany
44
Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
45
National and Kapodistrian University of Athens, Athens, Greece
46
National Technical University of Athens, Athens, Greece
47
University of Ioánnina, Ioannina, Greece
48
MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
49
Wigner Research Centre for Physics, Budapest, Hungary
50
Institute of Nuclear Research ATOMKI, Debrecen, Hungary
51
Institute of Physics, University of Debrecen, Debrecen, Hungary
52
Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary
53
Indian Institute of Science (IISc), Bangalore, India
54
National Institute of Science Education and Research, HBNI, Bhubaneswar, India
55
Panjab University, Chandigarh, India
56
University of Delhi, Delhi, India
57
Saha Institute of Nuclear Physics, HBNI, Kolkata, India
58
Indian Institute of Technology Madras, Madras, India
59
Bhabha Atomic Research Centre, Mumbai, India
60
Tata Institute of Fundamental Research-A, Mumbai, India
61
Tata Institute of Fundamental Research-B, Mumbai, India
62
Indian Institute of Science Education and Research (IISER), Pune, India
63
Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
64
University College Dublin, Dublin, Ireland
65
INFN Sezione di Bari, Università di Bari, Politecnico di Bari, Bari, Italy
66
INFN Sezione di Bologna, Università di Bologna, Bologna, Italy
67
INFN Sezione di Catania, Università di Catania, Catania, Italy
68
INFN Sezione di Firenze, Università di Firenze, Florence, Italy
69
INFN Laboratori Nazionali di Frascati, Frascati, Italy
70
INFN Sezione di Genova, Università di Genova, Genoa, Italy
71
INFN Sezione di Milano-Bicocca, Università di Milano-Bicocca, Milan, Italy
72
INFN Sezione di Napoli, Università di Napoli ’Federico II’ , Napoli, Italy, Università della Basilicata, Potenza, Italy, Università G. Marconi, Roma, Italy
73
INFN Sezione di Padova, Università di Padova, Padova, Italy, Università di Trento, Trento, Italy
74
INFN Sezione di Pavia, Università di Pavia, Pavia, Italy
75
INFN Sezione di Perugia, Università di Perugia, Perugia, Italy
76
INFN Sezione di Pisa, Università di Pisa, Scuola Normale Superiore di Pisa, Pisa, Italy
77
INFN Sezione di Roma, Sapienza Università di Roma, Rome, Italy
78
INFN Sezione di Torino, Università di Torino, Torino, Italy, Università del Piemonte Orientale, Novara, Italy
79
INFN Sezione di Trieste, Università di Trieste, Trieste, Italy
80
Kyungpook National University, Daegu, Korea
81
Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
82
Hanyang University, Seoul, Korea
83
Korea University, Seoul, Korea
84
Department of Physics, Kyung Hee University, Gwangju-si, South Korea
85
Sejong University, Seoul, Korea
86
Seoul National University, Seoul, Korea
87
University of Seoul, Seoul, Korea
88
Sungkyunkwan University, Suwon, Korea
89
Riga Technical University, Riga, Latvia
90
Vilnius University, Vilnius, Lithuania
91
National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
92
Universidad de Sonora (UNISON), Hermosillo, Mexico
93
Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
94
Universidad Iberoamericana, Mexico City, Mexico
95
Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
96
Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
97
University of Montenegro, Podgorica, Montenegro
98
University of Auckland, Auckland, New Zealand
99
University of Canterbury, Christchurch, New Zealand
100
National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
101
AGH University of Science and Technology Faculty of Computer Science, Electronics and Telecommunications, Kraków, Poland
102
National Centre for Nuclear Research, Swierk, Poland
103
Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
104
Laboratório de Instrumentação e Física Experimental de Partículas, Lisbon, Portugal
105
Joint Institute for Nuclear Research, Dubna, Russia
106
Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, Russia
107
Institute for Nuclear Research, Moscow, Russia
108
Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC ‘Kurchatov Institute’, Moscow, Russia
109
Moscow Institute of Physics and Technology, Moscow, Russia
110
National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia
111
P.N. Lebedev Physical Institute, Moscow, Russia
112
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
113
Novosibirsk State University (NSU), Novosibirsk, Russia
114
Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’, Protvino, Russia
115
National Research Tomsk Polytechnic University, Tomsk, Russia
116
Tomsk State University, Tomsk, Russia
117
University of Belgrade: Faculty of Physics and VINCA Institute of Nuclear Sciences, Belgrade, Serbia
118
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
119
Universidad Autónoma de Madrid, Madrid, Spain
120
Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Universidad de Oviedo, Oviedo, Spain
121
Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
122
University of Colombo, Colombo, Sri Lanka
123
Department of Physics, University of Ruhuna, Matara, Sri Lanka
124
CERN, European Organization for Nuclear Research, Geneva, Switzerland
125
Paul Scherrer Institut, Villigen, Switzerland
126
ETH Zurich-Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
127
Universität Zürich, Zurich, Switzerland
128
National Central University, Chung-Li, Taiwan
129
National Taiwan University (NTU), Taipei, Taiwan
130
Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
131
Physics Department, Science and Art Faculty, Çukurova University, Adana, Turkey
132
Physics Department, Middle East Technical University, Ankara, Turkey
133
Bogazici University, Istanbul, Turkey
134
Istanbul Technical University, Istanbul, Turkey
135
Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkov, Ukraine
136
National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
137
University of Bristol, Bristol, UK
138
Rutherford Appleton Laboratory, Didcot, UK
139
Imperial College, London, UK
140
Brunel University, Uxbridge, UK
141
Baylor University, Waco, USA
142
Catholic University of America, Washington, D.C., USA
143
The University of Alabama, Tuscaloosa, USA
144
Boston University, Boston, USA
145
Brown University, Providence, USA
146
University of California, Davis, USA
147
University of California, Los Angeles, USA
148
University of California, Riverside, Riverside, USA
149
University of California, San Diego, La Jolla, USA
150
Department of Physics, University of California, Santa Barbara, Santa Barbara, USA
151
California Institute of Technology, Pasadena, USA
152
Carnegie Mellon University, Pittsburgh, USA
153
University of Colorado Boulder, Boulder, USA
154
Cornell University, Ithaca, USA
155
Fermi National Accelerator Laboratory, Batavia, USA
156
University of Florida, Gainesville, USA
157
Florida International University, Miami, USA
158
Florida State University, Tallahassee, USA
159
Florida Institute of Technology, Melbourne, USA
160
University of Illinois at Chicago (UIC), Chicago, USA
161
The University of Iowa, Iowa City, USA
162
Johns Hopkins University, Baltimore, USA
163
The University of Kansas, Lawrence, USA
164
Kansas State University, Manhattan, USA
165
Lawrence Livermore National Laboratory, Livermore, USA
166
University of Maryland, College Park, USA
167
Massachusetts Institute of Technology, Cambridge, USA
168
University of Minnesota, Minneapolis, USA
169
University of Mississippi, Oxford, USA
170
University of Nebraska-Lincoln, Lincoln, USA
171
State University of New York at Buffalo, Buffalo, USA
172
Northeastern University, Boston, USA
173
Northwestern University, Evanston, USA
174
University of Notre Dame, Notre Dame, USA
175
The Ohio State University, Columbus, USA
176
Princeton University, Princeton, USA
177
University of Puerto Rico, Mayaguez, USA
178
Purdue University, West Lafayette, USA
179
Purdue University Northwest, Hammond, USA
180
Rice University, Houston, USA
181
University of Rochester, Rochester, USA
182
The Rockefeller University, New York, USA
183
Rutgers, The State University of New Jersey, Piscataway, USA
184
University of Tennessee, Knoxville, USA
185
Texas A & M University, College Station, USA
186
Texas Tech University, Lubbock, USA
187
Vanderbilt University, Nashville, USA
188
University of Virginia, Charlottesville, USA
189
Wayne State University, Detroit, USA
190
University of Wisconsin-Madison, Madison, WI, USA
191
CERN, 1211, Geneva 23, Switzerland
* e-mail: cms-publication-committee-chair@cern.ch
Received:
5
March
2020
Accepted:
17
June
2020
Published online:
10
August
2020
Central exclusive and semiexclusive production of [see pdf] pairs is measured with the CMS detector in proton-proton collisions at the LHC at center-of-mass energies of 5.02 and 13TeV. The theoretical description of these nonperturbative processes, which have not yet been measured in detail at the LHC, poses a significant challenge to models. The two pions are measured and identified in the CMS silicon tracker based on specific energy loss, whereas the absence of other particles is ensured by calorimeter information. The total and differential cross sections of exclusive and semiexclusive central [see pdf] production are measured as functions of invariant mass, transverse momentum, and rapidity of the [see pdf] system in the fiducial region defined as transverse momentum [see pdf] and pseudorapidity [see pdf] . The production cross sections for the four resonant channels , [see pdf] , , and are extracted using a simple model. These results represent the first measurement of this process at the LHC collision energies of 5.02 and 13TeV.
© CERN for the benefit of the CMS collaboration, 2020
