https://doi.org/10.1140/epjc/s10052-014-2951-y
Regular Article - Experimental Physics
Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at 
1
Yerevan Physics Institute, Yerevan, Armenia
2
Institut für Hochenergiephysik der OeAW, Wien, Austria
3
National Centre for Particle and High Energy Physics, 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
Université de Mons, Mons, Belgium
10
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
11
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
12
Universidade Estadual Paulista, São Paulo, Brazil
13
Universidade Federal do ABC, São Paulo, Brazil
14
Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
15
University of Sofia, Sofia, Bulgaria
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
Technical University of Split, Split, Croatia
20
University of Split, Split, Croatia
21
Institute Rudjer Boskovic, Zagreb, Croatia
22
University of Cyprus, Nicosia, Cyprus
23
Charles University, Prague, Czech Republic
24
Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
25
National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
26
Department of Physics, University of Helsinki, Helsinki, Finland
27
Helsinki Institute of Physics, Helsinki, Finland
28
Lappeenranta University of Technology, Lappeenranta, Finland
29
DSM/IRFU, CEA/Saclay, Gif-sur-Yvette, France
30
Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
31
Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, Université de Haute Alsace Mulhouse, CNRS/IN2P3, Strasbourg, France
32
Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France
33
Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Villeurbanne, France
34
Institute of High Energy Physics and Informatization, Tbilisi State University, Tbilisi, Georgia
35
RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
36
RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
37
RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
38
Deutsches Elektronen-Synchrotron, Hamburg, Germany
39
University of Hamburg, Hamburg, Germany
40
Institut für Experimentelle Kernphysik, Karlsruhe, Germany
41
Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
42
University of Athens, Athens, Greece
43
University of Ioánnina, Ioánnina, Greece
44
Wigner Research Centre for Physics, Budapest, Hungary
45
Institute of Nuclear Research ATOMKI, Debrecen, Hungary
46
University of Debrecen, Debrecen, Hungary
47
National Institute of Science Education and Research, Bhubaneswar, India
48
Panjab University, Chandigarh, India
49
University of Delhi, Delhi, India
50
Saha Institute of Nuclear Physics, Kolkata, India
51
Bhabha Atomic Research Centre, Mumbai, India
52
Tata Institute of Fundamental Research-EHEP, Mumbai, India
53
Tata Institute of Fundamental Research-HECR, Mumbai, India
54
Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
55
University College Dublin, Dublin, Ireland
56
INFN Sezione di Bari, Bari, Italy
57
Università di Bari, Bari, Italy
58
Politecnico di Bari, Bari, Italy
59
INFN Sezione di Bologna, Bologna, Italy
60
Università di Bologna, Bologna, Italy
61
INFN Sezione di Catania, Catania, Italy
62
Università di Catania, Catania, Italy
63
INFN Sezione di Firenze, Firenze, Italy
64
Università di Firenze, Firenze, Italy
65
INFN Laboratori Nazionali di Frascati, Frascati, Italy
66
INFN Sezione di Genova, Genova, Italy
67
Università di Genova, Genova, Italy
68
INFN Sezione di Milano-Bicocca, Milan, Italy
69
Università di Milano-Bicocca, Milan, Italy
70
INFN Sezione di Napoli, Naples, Italy
71
Università di Napoli ’Federico II’, Naples, Italy
72
Università della Basilicata (Potenza), Naples, Italy
73
Università G. Marconi (Roma), Naples, Italy
74
INFN Sezione di Padova, Padua, Italy
75
Università di Padova, Padua, Italy
76
Università di Trento (Trento), Padua, Italy
77
INFN Sezione di Pavia, Pavia, Italy
78
Università di Pavia, Pavia, Italy
79
INFN Sezione di Perugia, Pavia, Italy
80
Università di Perugia, Pavia, Italy
81
INFN Sezione di Pisa, Pisa, Italy
82
Università di Pisa, Pisa, Italy
83
Scuola Normale Superiore di Pisa, Pisa, Italy
84
INFN Sezione di Roma, Rome, Italy
85
Università di Roma, Rome, Italy
86
INFN Sezione di Torino, Turin, Italy
87
Università di Torino, Turin, Italy
88
Università del Piemonte Orientale (Novara), Turin, Italy
89
INFN Sezione di Trieste, Trieste, Italy
90
Università di Trieste, Trieste, Italy
91
Kangwon National University, Chunchon, Korea
92
Kyungpook National University, Taegu, Korea
93
Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
94
Korea University, Seoul, Korea
95
University of Seoul, Seoul, Korea
96
Sungkyunkwan University, Suwon, Korea
97
Vilnius University, Vilnius, Lithuania
98
National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
99
Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
100
Universidad Iberoamericana, Mexico City, Mexico
101
Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
102
Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
103
University of Auckland, Auckland, New Zealand
104
University of Canterbury, Christchurch, New Zealand
105
National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
106
National Centre for Nuclear Research, Swierk, Poland
107
Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
108
Laboratório de Instrumentação e Física Experimental de Partículas, Lisbon, Portugal
109
Joint Institute for Nuclear Research, Dubna, Russia
110
Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
111
Institute for Nuclear Research, Moscow, Russia
112
Institute for Theoretical and Experimental Physics, Moscow, Russia
113
P.N. Lebedev Physical Institute, Moscow, Russia
114
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
115
State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, Russia
116
Faculty of Physics and Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
117
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
118
Universidad Autónoma de Madrid, Madrid, Spain
119
Universidad de Oviedo, Oviedo, Spain
120
Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
121
CERN, European Organization for Nuclear Research, Geneva, Switzerland
122
Paul Scherrer Institut, Villigen, Switzerland
123
Institute for Particle Physics, ETH Zurich, Zurich, Switzerland
124
Universität Zürich, Zurich, Switzerland
125
National Central University, Chung-Li, Taiwan
126
National Taiwan University (NTU), Taipei, Taiwan
127
Chulalongkorn University, Bangkok, Thailand
128
Cukurova University, Adana, Turkey
129
Physics Department, Middle East Technical University, Ankara, Turkey
130
Bogazici University, Istanbul, Turkey
131
Istanbul Technical University, Istanbul, Turkey
132
National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
133
University of Bristol, Bristol, UK
134
Rutherford Appleton Laboratory, Didcot, UK
135
Imperial College, London, UK
136
Brunel University, Uxbridge, UK
137
Baylor University, Waco, USA
138
The University of Alabama, Tuscaloosa, USA
139
Boston University, Boston, USA
140
Brown University, Providence, USA
141
University of California, Davis, Davis, USA
142
University of California, Los Angeles, USA
143
University of California, Riverside, Riverside, USA
144
University of California, San Diego, La Jolla, USA
145
University of California, Santa Barbara, Santa Barbara, USA
146
California Institute of Technology, Pasadena, USA
147
Carnegie Mellon University, Pittsburgh, USA
148
University of Colorado at Boulder, Boulder, USA
149
Cornell University, Ithaca, USA
150
Fairfield University, Fairfield, USA
151
Fermi National Accelerator Laboratory, Batavia, USA
152
University of Florida, Gainesville, USA
153
Florida International University, Miami, USA
154
Florida State University, Tallahassee, USA
155
Florida Institute of Technology, Melbourne, USA
156
University of Illinois at Chicago (UIC), Chicago, USA
157
The University of Iowa, Iowa, USA
158
Johns Hopkins University, Baltimore, USA
159
The University of Kansas, Lawrence, USA
160
Kansas State University, Manhattan, USA
161
Lawrence Livermore National Laboratory, Livermore, USA
162
University of Maryland, College Park, USA
163
Massachusetts Institute of Technology, Cambridge, USA
164
University of Minnesota, Minneapolis, USA
165
University of Mississippi, Oxford, USA
166
University of Nebraska-Lincoln, Lincoln, USA
167
State University of New York at Buffalo, Buffalo, USA
168
Northeastern University, Boston, USA
169
Northwestern University, Evanston, USA
170
University of Notre Dame, Notre Dame, USA
171
The Ohio State University, Columbus, USA
172
Princeton University, Princeton, USA
173
University of Puerto Rico, Mayaguez, USA
174
Purdue University, West Lafayette, USA
175
Purdue University Calumet, Hammond, USA
176
Rice University, Houston, USA
177
University of Rochester, Rochester, USA
178
The Rockefeller University, New York, USA
179
Rutgers, The State University of New Jersey, Piscataway, USA
180
University of Tennessee, Knoxville, USA
181
Texas A&M University, College Station, USA
182
Texas Tech University, Lubbock, USA
183
Vanderbilt University, Nashville, USA
184
University of Virginia, Charlottesville, USA
185
Wayne State University, Detroit, USA
186
University of Wisconsin, Madison, USA
187
CERN, Geneva, Switzerland
* e-mail: cms-publication-committee-chair@cern.ch
Received:
18
January
2014
Accepted:
23
June
2014
Published online:
23
July
2014
Dijet production has been measured in 
collisions at a nucleon–nucleon centre-of-mass energy of 5.02. A data sample corresponding to an integrated luminosity of 35 
was collected using the Compact Muon Solenoid detector at the Large Hadron Collider. The dijet transverse momentum balance, azimuthal angle correlations, and pseudorapidity distributions are studied as a function of the transverse energy in the forward calorimeters (
). For collisions, the dijet transverse momentum ratio and the width of the distribution of dijet azimuthal angle difference are comparable to the same quantities obtained from a simulated 
reference and insensitive to . In contrast, the mean value of the dijet pseudorapidity is found to change monotonically with increasing , indicating a correlation between the energy emitted at large pseudorapidity and the longitudinal motion of the dijet frame. The pseudorapidity distribution of the dijet system in minimum bias collisions is compared with next-to-leading-order perturbative QCD predictions obtained from both nucleon and nuclear parton distribution functions, and the data more closely match the latter.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
