https://doi.org/10.1140/epjc/s10052-012-2183-y
Regular Article - Experimental Physics
Production of K∗(892)0 and ϕ(1020) in pp collisions at 
1
CERN, 1211, Geneva 23, Switzerland
2
Eberhard Karls Universität Tübingen, Tübingen, Germany
3
Nikhef, National Institute for Subatomic Physics and Institute for Subatomic Physics of Utrecht University, Utrecht, Netherlands
4
Dipartimento di Fisica dell’Università and Sezione INFN, Padova, Italy
5
COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan
6
Laboratoire de Physique Corpusculaire (LPC), Clermont Université, Université Blaise Pascal, CNRS–IN2P3, Clermont-Ferrand, France
7
Yonsei University, Seoul, South Korea
8
Yerevan Physics Institute, Yerevan, Armenia
9
Scientific Research Technological Institute of Instrument Engineering, Kharkov, Ukraine
10
Laboratori Nazionali di Frascati, INFN, Frascati, Italy
11
Lawrence Berkeley National Laboratory, Berkeley, California, United States
12
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
13
Saha Institute of Nuclear Physics, Kolkata, India
14
Faculty of Science, P.J. Šafárik University, Košice, Slovakia
15
The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Cracow, Poland
16
Rudjer Bošković Institute, Zagreb, Croatia
17
Moscow Engineering Physics Institute, Moscow, Russia
18
Laboratori Nazionali di Legnaro, INFN, Legnaro, Italy
19
Faculty of Engineering, Bergen University College, Bergen, Norway
20
Nuclear Physics Group, STFC Daresbury Laboratory, Daresbury, United Kingdom
21
Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
22
Department of Physics, University of Oslo, Oslo, Norway
23
University of Tokyo, Tokyo, Japan
24
Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
25
European Organization for Nuclear Research (CERN), Geneva, Switzerland
26
Dipartimento di Fisica dell’Università and Sezione INFN, Turin, Italy
27
Department of Physics Aligarh Muslim University, Aligarh, India
28
Sezione INFN, Cagliari, Italy
29
Institute for Theoretical and Experimental Physics, Moscow, Russia
30
Helsinki Institute of Physics (HIP) and University of Jyväskylä, Jyväskylä, Finland
31
Dipartimento di Fisica dell’Università and Sezione INFN, Trieste, Italy
32
School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
33
Nikhef, National Institute for Subatomic Physics, Amsterdam, Netherlands
34
Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Lima, Peru
35
Department of Physics, Gauhati University, Guwahati, India
36
Institut de Physique Nucléaire d’Orsay (IPNO), Université Paris-Sud, CNRS-IN2P3, Orsay, France
37
Institute of Space Sciences (ISS), Bucharest, Romania
38
Physics Department, University of Jammu, Jammu, India
39
Joint Institute for Nuclear Research (JINR), Dubna, Russia
40
Université de Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, Villeurbanne, France
41
California Polytechnic State University, San Luis Obispo, California, United States
42
Budker Institute for Nuclear Physics, Novosibirsk, Russia
43
Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università and Gruppo Collegato INFN, Salerno, Italy
44
Dipartimento di Fisica dell’Università ‘La Sapienza’ and Sezione INFN, Rome, Italy
45
University of Tennessee, Knoxville, Tennessee, United States
46
Institute for High Energy Physics, Protvino, Russia
47
Universidade de São Paulo (USP), São Paulo, Brazil
48
Dipartimento di Fisica dell’Università and Sezione INFN, Bologna, Italy
49
Centro de Investigación y de Estudios Avanzados (CINVESTAV), Mexico City and Mérida, Mexico
50
National Institute for Physics and Nuclear Engineering, Bucharest, Romania
51
Centre de Calcul de l’IN2P3, Villeurbanne, France
52
Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
53
Variable Energy Cyclotron Centre, Kolkata, India
54
Physics Department, University of Rajasthan, Jaipur, India
55
Gangneung-Wonju National University, Gangneung, South Korea
56
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
57
Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier, CNRS-IN2P3, Institut Polytechnique de Grenoble, Grenoble, France
58
Institut für Informatik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
59
V. Fock Institute for Physics, St. Petersburg State University, St. Petersburg, Russia
60
Department of Physics, Ohio State University, Columbus, Ohio, United States
61
Centro Fermi – Centro Studi e Ricerche e Museo Storico della Fisica “Enrico Fermi”, Rome, Italy
62
Dipartimento di Fisica dell’Università and Sezione INFN, Cagliari, Italy
63
University of Tsukuba, Tsukuba, Japan
64
Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovakia
65
Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
66
Department of Physics, Sejong University, Seoul, South Korea
67
Hua-Zhong Normal University, Wuhan, China
68
Universidad Autónoma de Sinaloa, Culiacán, Mexico
69
Zentrum für Technologietransfer und Telekommunikation (ZTT), Fachhochschule Worms, Worms, Germany
70
University of Houston, Houston, Texas, United States
71
Indian Institute of Technology Indore (IIT), Indore, India
72
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Havana, Cuba
73
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Mexico City, Mexico
74
Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
75
Sezione INFN, Catania, Italy
76
Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
77
Pusan National University, Pusan, South Korea
78
Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
79
SUBATECH, Ecole des Mines de Nantes, Université de Nantes, CNRS-IN2P3, Nantes, France
80
Physics Department, The University of Texas at Austin, Austin, TX, United States
81
Institute for Nuclear Research, Academy of Sciences, Moscow, Russia
82
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN, Catania, Italy
83
Soltan Institute for Nuclear Studies, Warsaw, Poland
84
Department of Physics and Technology, University of Bergen, Bergen, Norway
85
Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovakia
86
Korea Institute of Science and Technology Information, Daejeon, South Korea
87
Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
88
Physics Department, Panjab University, Chandigarh, India
89
Petersburg Nuclear Physics Institute, Gatchina, Russia
90
Physics Department, University of Cape Town, iThemba LABS, Cape Town, South Africa
91
Sezione INFN, Bari, Italy
92
Institute of Physics, Bhubaneswar, India
93
Sezione INFN, Turin, Italy
94
Russian Federal Nuclear Center (VNIIEF), Sarov, Russia
95
Wayne State University, Detroit, Michigan, United States
96
Warsaw University of Technology, Warsaw, Poland
97
Purdue University, West Lafayette, Indiana, United States
98
Dipartimento Interateneo di Fisica ‘M. Merlin’ and Sezione INFN, Bari, Italy
99
Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg, CNRS-IN2P3, Strasbourg, France
100
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, Germany
101
Sezione INFN, Rome, Italy
102
Physics Department, University of Athens, Athens, Greece
103
Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež u Prahy, Czech Republic
104
Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico
105
Sezione INFN, Padova, Italy
106
Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine
107
Departamento de Física de Partículas and IGFAE, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
108
Division of Experimental High Energy Physics, University of Lund, Lund, Sweden
109
Sezione INFN, Trieste, Italy
110
Hiroshima University, Hiroshima, Japan
111
Department of Physics and Centre for Astroparticle Physics and Space Science (CAPSS), Bose Institute, Kolkata, India
112
Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States
113
Physics Department, Creighton University, Omaha, Nebraska, United States
114
Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
115
Technical University of Split FESB, Split, Croatia
116
Russian Research Centre Kurchatov Institute, Moscow, Russia
117
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
118
Sezione INFN, Bologna, Italy
119
Dipartimento di Scienze e Innovazione Tecnologica dell’Università del Piemonte Orientale and Gruppo Collegato INFN, Alessandria, Italy
120
Yale University, New Haven, Connecticut, United States
121
Chicago State University, Chicago, United States
122
Fachhochschule Köln, Köln, Germany
123
China Institute of Atomic Energy, Beijing, China
124
Commissariat à l’Energie Atomique, IRFU, Saclay, France
125
Indian Institute of Technology, Mumbai, India
126
Lawrence Livermore National Laboratory, Livermore, California, United States
127
KFKI Research Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, Hungary
* e-mail: Angela.Badala@ct.infn.it
Received:
31
August
2012
Published online:
30
October
2012
The production of K∗(892)0 and ϕ(1020) in pp collisions at 
was measured by the ALICE experiment at the LHC. The yields and the transverse momentum spectra d2
N/dydp
T at midrapidity |y|<0.5 in the range 0<p
T<6 GeV/c for K∗(892)0 and 0.4<p
T<6 GeV/c for ϕ(1020) are reported and compared to model predictions. Using the yield of pions, kaons, and Ω baryons measured previously by ALICE at , the ratios K∗/K−, ϕ/K∗, ϕ/K−, ϕ/π
−, and 
are presented. The values of the K∗/K−, ϕ/K∗ and ϕ/K− ratios are similar to those found at lower centre-of-mass energies. In contrast, the ϕ/π
− ratio, which has been observed to increase with energy, seems to saturate above 200 GeV. The 
ratio in the p
T range 1–5 GeV/c is found to be in good agreement with the prediction of the 
v2.0 model with a strong colour field.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2012
