https://doi.org/10.1140/epjc/s10052-020-7624-4
Regular Article - Experimental Physics
Transverse momentum and process dependent azimuthal anisotropies in 
TeV p+Pb collisions 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
5
Istanbul Aydin University, Istanbul, Turkey
6
Division of Physics, TOBB University of Economics and Technology, Ankara, Turkey
7
LAPP, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, France
8
High Energy Physics Division, Argonne National Laboratory, Argonne, IL, USA
9
Department of Physics, University of Arizona, Tucson, AZ, USA
10
Department of Physics, University of Texas at Arlington, Arlington, TX, USA
11
Physics Department, National and Kapodistrian University of Athens, Athens, Greece
12
Physics Department, National Technical University of Athens, Zografou, Greece
13
Department of Physics, University of Texas at Austin, Austin, TX, USA
14
Bahcesehir University, Faculty of Engineering and Natural Sciences, Istanbul, Turkey
15
Istanbul Bilgi University, Faculty of Engineering and Natural Sciences, Istanbul, Turkey
16
Department of Physics, Bogazici University, Istanbul, Turkey
17
Department of Physics Engineering, Gaziantep University, Gaziantep, Turkey
18
Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan
19
Institut de Física d’Altes Energies (IFAE), Barcelona Institute of Science and Technology, Barcelona, Spain
20
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
21
Physics Department, Tsinghua University, Beijing, China
22
Department of Physics, Nanjing University, Nanjing, China
23
University of Chinese Academy of Science (UCAS), Beijing, China
24
Institute of Physics, University of Belgrade, Belgrade, Serbia
25
Department for Physics and Technology, University of Bergen, Bergen, Norway
26
Physics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley, CA, USA
27
Institut für Physik, Humboldt Universität zu Berlin, Berlin, Germany
28
Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland
29
School of Physics and Astronomy, University of Birmingham, Birmingham, UK
30
Facultad de Ciencias y Centro de Investigaciónes, Universidad Antonio Nariño, Bogota, Colombia
31
Dipartimento di Fisica, INFN Bologna and Universita’ di Bologna, Bologna, Italy
32
INFN Sezione di Bologna, Bologna
, Italy
33
Physikalisches Institut, Universität Bonn, Bonn, Germany
34
Department of Physics, Boston University, Boston, MA, USA
35
Department of Physics, Brandeis University, Waltham, MA, USA
36
Transilvania University of Brasov, Brasov, Romania
37
Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania
38
Department of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, Romania
39
National Institute for Research and Development of Isotopic and Molecular Technologies, Physics Department, Cluj-Napoca, Romania
40
University Politehnica Bucharest, Bucharest, Romania
41
West University in Timisoara, Timisoara, Romania
42
Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovak Republic
43
Department of Subnuclear Physics, Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovak Republic
44
Physics Department, Brookhaven National Laboratory, Upton, NY, USA
45
Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina
46
California State University, CA, USA
47
Cavendish Laboratory, University of Cambridge, Cambridge, UK
48
Department of Physics, University of Cape Town, Cape Town, South Africa
49
Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa
50
Pretoria, South Africa
51
School of Physics, University of the Witwatersrand, Johannesburg, South Africa
52
Department of Physics, Carleton University, Ottawa, ON, Canada
53
Faculté des Sciences Ain Chock, Réseau Universitaire de Physique des Hautes Energies - Université Hassan II, Casablanca, Morocco
54
Faculté des Sciences, Université Ibn-Tofail, Kénitra, Morocco
55
Faculté des Sciences Semlalia, Université Cadi Ayyad, LPHEA-Marrakech, Morocco
56
Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda, Morocco
57
Faculté des sciences, Université Mohammed V, Rabat, Morocco
58
CERN, Geneva, Switzerland
59
Enrico Fermi Institute, University of Chicago, Chicago, IL, USA
60
LPC, Université Clermont Auvergne, CNRS/IN2P3, Clermont-Ferrand, France
61
Nevis Laboratory, Columbia University, Irvington, NY, USA
62
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
63
Dipartimento di Fisica, Università della Calabria, Rende, Italy
64
INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, Italy
65
Physics Department, Southern Methodist University, Dallas, TX, USA
66
Physics Department, University of Texas at Dallas, Richardson, TX, USA
67
National Centre for Scientific Research “Demokritos”, Agia Paraskevi, Greece
68
Department of Physics, Stockholm University, Sweden
69
Oskar Klein Centre, Stockholm, Sweden
70
Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany
71
Lehrstuhl für Experimentelle Physik IV, Technische Universität Dortmund, Dortmund, Germany
72
Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
73
Department of Physics, Duke University, Durham, NC, USA
74
SUPA - School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
75
INFN e Laboratori Nazionali di Frascati, Frascati, Italy
76
Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
77
II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany
78
Département de Physique Nucléaire et Corpusculaire, Université de Genève, Geneva, Switzerland
79
Dipartimento di Fisica, Università di Genova, Genoa, Italy
80
INFN Sezione di Genova, Genoa, Italy
81
II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen, Germany
82
SUPA - School of Physics and Astronomy, University of Glasgow, Glasgow, UK
83
LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble INP, Grenoble, France
84
Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, MA, USA
85
Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, China
86
Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao, China
87
School of Physics and Astronomy, Shanghai Jiao Tong University, KLPPAC-MoE, SKLPPC, Shanghai, China
88
Tsung-Dao Lee Institute, Shanghai, China
89
Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
90
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
91
Faculty of Applied Information Science, Hiroshima Institute of Technology, Hiroshima, Japan
92
Department of Physics, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
93
Department of Physics, University of Hong Kong, Hong Kong, China
94
Department of Physics and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
95
Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
96
Department of Physics, Indiana University, Bloomington, IN, USA
97
INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
98
ICTP, Trieste, Italy
99
Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Udine, Italy
100
INFN Sezione di Lecce,
Lecce, Italy
101
Dipartimento di Matematica e Fisica, Università del Salento, Lecce, Italy
102
INFN Sezione di Milano,
Milan, Italy
103
Dipartimento di Fisica, Università di Milano, Milan, Italy
104
INFN Sezione di Napoli,
Naples, Italy
105
Dipartimento di Fisica, Università di Napoli,
Naples, Italy
106
INFN Sezione di Pavia, Pavia
, Italy
107
Dipartimento di Fisica, Università di Pavia, Pavia, Italy
108
INFN Sezione di Pisa,
Pisa, Italy
109
Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy
110
INFN Sezione di Roma,
Rome, Italy
111
Dipartimento di Fisica, Sapienza Università di Roma, Rome, Italy
112
INFN Sezione di Roma Tor Vergata, Rome
, Italy
113
Dipartimento di Fisica, Università di Roma Tor Vergata, Rome, Italy
114
INFN Sezione di Roma Tre, Rome
, Italy
115
Dipartimento di Matematica e Fisica, Università Roma Tre, Rome, Italy
116
INFN-TIFPA,
Rome, Italy
117
Università degli Studi di Trento, Trento, Italy
118
Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität, Innsbruck, Austria
119
University of Iowa, Iowa City, IA, USA
120
Department of Physics and Astronomy, Iowa State University, Ames, IA, USA
121
Joint Institute for Nuclear Research, Dubna, Russia
122
Departamento de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, Brazil
123
Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil
124
Universidade Federal de São João del Rei (UFSJ), São João del Rei, Brazil
125
Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
126
KEK, High Energy Accelerator Research Organization, Tsukuba, Japan
127
Graduate School of Science, Kobe University, Kobe, Japan
128
AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
129
Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland
130
Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland
131
Faculty of Science, Kyoto University, Kyoto, Japan
132
Kyoto University of Education, Kyoto, Japan
133
Research Center for Advanced Particle Physics and Department of Physics, Kyushu University, Fukuoka, Japan
134
Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina
135
Physics Department, Lancaster University, Lancaster, UK
136
Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK
137
Department of Experimental Particle Physics, Jožef Stefan Institute and Department of Physics, University of Ljubljana, Ljubljana, Slovenia
138
School of Physics and Astronomy, Queen Mary University of London, London, UK
139
Department of Physics, Royal Holloway University of London, Egham, UK
140
Department of Physics and Astronomy, University College London, London, UK
141
Louisiana Tech University, Ruston, LA, USA
142
Fysiska institutionen, Lunds universitet, Lund, Sweden
143
Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules (IN2P3), Villeurbanne, France
144
Departamento de Física Teorica C-15 and CIAFF, Universidad Autónoma de Madrid, Madrid, Spain
145
Institut für Physik, Universität Mainz, Mainz, Germany
146
School of Physics and Astronomy, University of Manchester, Manchester, UK
147
CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
148
Department of Physics, University of Massachusetts, Amherst, MA, USA
149
Department of Physics, McGill University, Montreal, QC, Canada
150
School of Physics, University of Melbourne, Victoria, Australia
151
Department of Physics, University of Michigan, Ann Arbor, MI, USA
152
Department of Physics and Astronomy, Michigan State University, East Lansing, MI, USA
153
B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
154
Research Institute for Nuclear Problems of Byelorussian State University, Minsk, Belarus
155
Group of Particle Physics, University of Montreal, Montreal, QC, Canada
156
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
157
National Research Nuclear University MEPhI, Moscow, Russia
158
D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow, Russia
159
Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany
160
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany
161
Nagasaki Institute of Applied Science, Nagasaki, Japan
162
Graduate School of Science and Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan
163
Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USA
164
Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen, Netherlands
165
Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, Netherlands
166
Department of Physics, Northern Illinois University, DeKalb, IL, USA
167
Budker Institute of Nuclear Physics and NSU, SB RAS, Novosibirsk, Russia
168
Novosibirsk State University Novosibirsk, Novosibirsk
, Russia
169
Institute for High Energy Physics of the National Research Centre Kurchatov Institute, Protvino, Russia
170
Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre “Kurchatov Institute”, Moscow, Russia
171
Department of Physics, New York University, New York, NY, USA
172
Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo, Japan
173
Ohio State University, Columbus, OH, USA
174
Faculty of Science, Okayama University, Okayama, Japan
175
Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK, USA
176
Department of Physics, Oklahoma State University, Stillwater, OK, USA
177
Palacký University, RCPTM, Joint Laboratory of Optics, Olomouc, Czech Republic
178
Center for High Energy Physics, University of Oregon, Eugene, OR, USA
179
LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France
180
Graduate School of Science, Osaka University, Osaka, Japan
181
Department of Physics, University of Oslo, Oslo, Norway
182
Department of Physics, Oxford University, Oxford, UK
183
LPNHE, Sorbonne Université, Université de Paris, CNRS/IN2P3, Paris, France
184
Department of Physics, University of Pennsylvania, Philadelphia, PA, USA
185
Konstantinov Nuclear Physics Institute of National Research Centre “Kurchatov Institute”, PNPI, St. Petersburg, Russia
186
Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA, USA
187
Laboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, Portugal
188
Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
189
Departamento de Física, Universidade de Coimbra, Coimbra, Portugal
190
Centro de Física Nuclear da Universidade de Lisboa, Lisbon, Portugal
191
Departamento de Física, Universidade do Minho, Braga, Portugal
192
Departamento de Física Teórica y del Cosmos, Universidad de Granada, Granada, Spain
193
Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
194
Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
195
Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
196
Czech Technical University in Prague, Prague, Czech Republic
197
Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic
198
Particle Physics Department, Rutherford Appleton Laboratory, Didcot, UK
199
IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
200
Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, CA, USA
201
Departamento de Física, Pontificia Universidad Católica de Chile, Santiago, Chile
202
Universidad Andres Bello, Department of Physics, Santiago, Chile
203
Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso, Chile
204
Department of Physics, University of Washington, Seattle, WA, USA
205
Department of Physics and Astronomy, University of Sheffield, Sheffield, UK
206
Department of Physics, Shinshu University, Nagano, Japan
207
Department Physik, Universität Siegen, Siegen, Germany
208
Department of Physics, Simon Fraser University, Burnaby, BC, Canada
209
SLAC National Accelerator Laboratory, Stanford, CA, USA
210
Physics Department, Royal Institute of Technology, Stockholm, Sweden
211
Departments of Physics and Astronomy, Stony Brook University, Stony Brook, NY, USA
212
Department of Physics and Astronomy, University of Sussex, Brighton, UK
213
School of Physics, University of Sydney, Sydney, Australia
214
Institute of Physics, Academia Sinica, Taipei, Taiwan
215
E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia
216
High Energy Physics Institute, Tbilisi State University, Tbilisi, Georgia
217
Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel
218
Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
219
Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
220
International Center for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan
221
Graduate School of Science and Technology, Tokyo Metropolitan University, Tokyo, Japan
222
Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
223
Tomsk State University, Tomsk, Russia
224
Department of Physics, University of Toronto, Toronto, ON, Canada
225
TRIUMF, Vancouver, BC, Canada
226
Department of Physics and Astronomy, York University, Toronto, ON, Canada
227
Division of Physics and Tomonaga Center for the History of the Universe, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan
228
Department of Physics and Astronomy, Tufts University, Medford, MA, USA
229
Department of Physics and Astronomy, University of California Irvine, Irvine, CA, USA
230
Department of Physics and Astronomy, University of Uppsala, Uppsala, Sweden
231
Department of Physics, University of Illinois, Urbana, IL, USA
232
Instituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain
233
Department of Physics, University of British Columbia, Vancouver, BC, Canada
234
Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
235
Fakultät für Physik und Astronomie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
236
Department of Physics, University of Warwick, Coventry, UK
237
Waseda University, Tokyo, Japan
238
Department of Particle Physics, Weizmann Institute of Science, Rehovot, Israel
239
Department of Physics, University of Wisconsin, Madison, WI, USA
240
Fakultät für Mathematik und Naturwissenschaften, Fachgruppe Physik, Bergische Universität Wuppertal, Wuppertal, Germany
241
Department of Physics, Yale University, New Haven, CT, USA
* e-mail: atlas.publications@cern.ch
Received:
31
October
2019
Accepted:
7
January
2020
Published online:
30
January
2020
The azimuthal anisotropy of charged particles produced in TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 
that was collected in 2016. Azimuthal anisotropy coefficients, elliptic 
and triangular 
, extracted using two-particle correlations with a non-flow template fit procedure, are presented as a function of particle transverse momentum (
) between 0.5 and 50 GeV. The results are also reported as a function of centrality in three different particle intervals. The results are reported from minimum-bias events and jet-triggered events, where two jet thresholds are used. The anisotropies for particles with less than about 2 GeV are consistent with hydrodynamic flow expectations, while the significant non-zero anisotropies for in the range 9–50 GeV are not explained within current theoretical frameworks. In the range 2–9 GeV, the anisotropies are larger in minimum-bias than in jet-triggered events. Possible origins of these effects, such as the changing admixture of particles from hard scattering and the underlying event, are discussed.
© CERN for the benefit of the ATLAS collaboration, 2020
