Nuclear Physics B (Sep 2014)
Spin alignment and violation of the OZI rule in exclusive ω and ϕ production in pp collisions
- C. Adolph,
- R. Akhunzyanov,
- M.G. Alexeev,
- G.D. Alexeev,
- A. Amoroso,
- V. Andrieux,
- V. Anosov,
- A. Austregesilo,
- B. Badełek,
- F. Balestra,
- J. Barth,
- G. Baum,
- R. Beck,
- Y. Bedfer,
- A. Berlin,
- J. Bernhard,
- K. Bicker,
- J. Bieling,
- R. Birsa,
- J. Bisplinghoff,
- M. Bodlak,
- M. Boer,
- P. Bordalo,
- F. Bradamante,
- C. Braun,
- A. Bressan,
- M. Büchele,
- E. Burtin,
- L. Capozza,
- M. Chiosso,
- S.U. Chung,
- A. Cicuttin,
- M.L. Crespo,
- Q. Curiel,
- S. Dalla Torre,
- S.S. Dasgupta,
- S. Dasgupta,
- O.Yu. Denisov,
- S.V. Donskov,
- N. Doshita,
- V. Duic,
- W. Dünnweber,
- M. Dziewiecki,
- A. Efremov,
- C. Elia,
- P.D. Eversheim,
- W. Eyrich,
- M. Faessler,
- A. Ferrero,
- A. Filin,
- M. Finger,
- M. Finger, Jr.,
- H. Fischer,
- C. Franco,
- N. du Fresne von Hohenesche,
- J.M. Friedrich,
- V. Frolov,
- F. Gautheron,
- O.P. Gavrichtchouk,
- S. Gerassimov,
- R. Geyer,
- I. Gnesi,
- B. Gobbo,
- S. Goertz,
- M. Gorzellik,
- S. Grabmüller,
- A. Grasso,
- B. Grube,
- T. Grussenmeyer,
- A. Guskov,
- T. Guthörl,
- F. Haas,
- D. von Harrach,
- D. Hahne,
- R. Hashimoto,
- F.H. Heinsius,
- F. Herrmann,
- F. Hinterberger,
- Ch. Höppner,
- N. Horikawa,
- N. d'Hose,
- S. Huber,
- S. Ishimoto,
- A. Ivanov,
- Yu. Ivanshin,
- T. Iwata,
- R. Jahn,
- V. Jary,
- P. Jasinski,
- P. Joerg,
- R. Joosten,
- E. Kabuß,
- B. Ketzer,
- G.V. Khaustov,
- Yu.A. Khokhlov,
- Yu. Kisselev,
- F. Klein,
- K. Klimaszewski,
- J.H. Koivuniemi,
- V.N. Kolosov,
- K. Kondo,
- K. Königsmann,
- I. Konorov,
- V.F. Konstantinov,
- A.M. Kotzinian,
- O. Kouznetsov,
- M. Krämer,
- Z.V. Kroumchtein,
- N. Kuchinski,
- F. Kunne,
- K. Kurek,
- R.P. Kurjata,
- A.A. Lednev,
- A. Lehmann,
- M. Levillain,
- S. Levorato,
- J. Lichtenstadt,
- A. Maggiora,
- A. Magnon,
- N. Makke,
- G.K. Mallot,
- C. Marchand,
- A. Martin,
- J. Marzec,
- J. Matousek,
- H. Matsuda,
- T. Matsuda,
- G. Meshcheryakov,
- W. Meyer,
- T. Michigami,
- Yu.V. Mikhailov,
- Y. Miyachi,
- A. Nagaytsev,
- T. Nagel,
- F. Nerling,
- S. Neubert,
- D. Neyret,
- V.I. Nikolaenko,
- J. Novy,
- W.-D. Nowak,
- A.S. Nunes,
- A.G. Olshevsky,
- I. Orlov,
- M. Ostrick,
- R. Panknin,
- D. Panzieri,
- B. Parsamyan,
- S. Paul,
- S. Platchkov,
- J. Pochodzalla,
- V.A. Polyakov,
- J. Pretz,
- M. Quaresma,
- C. Quintans,
- S. Ramos,
- C. Regali,
- G. Reicherz,
- E. Rocco,
- N.S. Rossiyskaya,
- D.I. Ryabchikov,
- A. Rychter,
- V.D. Samoylenko,
- A. Sandacz,
- M. Sapozhnikov,
- S. Sarkar,
- I.A. Savin,
- G. Sbrizzai,
- P. Schiavon,
- C. Schill,
- T. Schlüter,
- K. Schmidt,
- H. Schmieden,
- K. Schönning,
- S. Schopferer,
- M. Schott,
- O.Yu. Shevchenko,
- L. Silva,
- L. Sinha,
- S. Sirtl,
- M. Slunecka,
- S. Sosio,
- F. Sozzi,
- A. Srnka,
- L. Steiger,
- M. Stolarski,
- M. Sulc,
- R. Sulej,
- H. Suzuki,
- A. Szableski,
- T. Szameitat,
- P. Sznajder,
- S. Takekawa,
- J. ter Wolbeek,
- S. Tessaro,
- F. Tessarotto,
- F. Thibaud,
- S. Uhl,
- I. Uman,
- M. Virius,
- L. Wang,
- T. Weisrock,
- M. Wilfert,
- R. Windmolders,
- H. Wollny,
- K. Zaremba,
- M. Zavertyaev,
- E. Zemlyanichkina,
- M. Ziembicki,
- A. Zink
Affiliations
- C. Adolph
- Universität Erlangen–Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- R. Akhunzyanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M.G. Alexeev
- Torino Section of INFN, 10125 Turin, Italy
- G.D. Alexeev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Amoroso
- University of Turin, Department of Physics, 10125 Turin, Italy
- V. Andrieux
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- V. Anosov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Austregesilo
- CERN, 1211 Geneva 23, Switzerland
- B. Badełek
- University of Warsaw, Faculty of Physics, 00-681 Warsaw, Poland
- F. Balestra
- University of Turin, Department of Physics, 10125 Turin, Italy
- J. Barth
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- G. Baum
- Universität Bielefeld, Fakultät für Physik, 33501 Bielefeld, Germany
- R. Beck
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- Y. Bedfer
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- A. Berlin
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- J. Bernhard
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- K. Bicker
- CERN, 1211 Geneva 23, Switzerland
- J. Bieling
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- R. Birsa
- Trieste Section of INFN, 34127 Trieste, Italy
- J. Bisplinghoff
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- M. Bodlak
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- M. Boer
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- P. Bordalo
- LIP, 1000-149 Lisbon, Portugal
- F. Bradamante
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- C. Braun
- Universität Erlangen–Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- A. Bressan
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- M. Büchele
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- E. Burtin
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- L. Capozza
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- M. Chiosso
- University of Turin, Department of Physics, 10125 Turin, Italy
- S.U. Chung
- Technische Universität München, Physik Department, 85748 Garching, Germany
- A. Cicuttin
- Abdus Salam ICTP, 34151 Trieste, Italy
- M.L. Crespo
- Abdus Salam ICTP, 34151 Trieste, Italy
- Q. Curiel
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- S. Dalla Torre
- Trieste Section of INFN, 34127 Trieste, Italy
- S.S. Dasgupta
- Matrivani Institute of Experimental Research & Education, Calcutta 700 030, India
- S. Dasgupta
- Trieste Section of INFN, 34127 Trieste, Italy
- O.Yu. Denisov
- Torino Section of INFN, 10125 Turin, Italy
- S.V. Donskov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- N. Doshita
- Yamagata University, Yamagata 992-8510, Japan
- V. Duic
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- W. Dünnweber
- Ludwig-Maximilians-Universität München, Department für Physik, 80799 Munich, Germany
- M. Dziewiecki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A. Efremov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- C. Elia
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- P.D. Eversheim
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- W. Eyrich
- Universität Erlangen–Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- M. Faessler
- Ludwig-Maximilians-Universität München, Department für Physik, 80799 Munich, Germany
- A. Ferrero
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- A. Filin
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- M. Finger
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- M. Finger, Jr.
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- H. Fischer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- C. Franco
- LIP, 1000-149 Lisbon, Portugal
- N. du Fresne von Hohenesche
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- J.M. Friedrich
- Technische Universität München, Physik Department, 85748 Garching, Germany
- V. Frolov
- CERN, 1211 Geneva 23, Switzerland
- F. Gautheron
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- O.P. Gavrichtchouk
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- S. Gerassimov
- Lebedev Physical Institute, 119991 Moscow, Russia
- R. Geyer
- Ludwig-Maximilians-Universität München, Department für Physik, 80799 Munich, Germany
- I. Gnesi
- University of Turin, Department of Physics, 10125 Turin, Italy
- B. Gobbo
- Trieste Section of INFN, 34127 Trieste, Italy
- S. Goertz
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- M. Gorzellik
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- S. Grabmüller
- Technische Universität München, Physik Department, 85748 Garching, Germany
- A. Grasso
- University of Turin, Department of Physics, 10125 Turin, Italy
- B. Grube
- Technische Universität München, Physik Department, 85748 Garching, Germany
- T. Grussenmeyer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- A. Guskov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- T. Guthörl
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- F. Haas
- Technische Universität München, Physik Department, 85748 Garching, Germany
- D. von Harrach
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- D. Hahne
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- R. Hashimoto
- Yamagata University, Yamagata 992-8510, Japan
- F.H. Heinsius
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- F. Herrmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- F. Hinterberger
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- Ch. Höppner
- Technische Universität München, Physik Department, 85748 Garching, Germany
- N. Horikawa
- Nagoya University, 464 Nagoya, Japan
- N. d'Hose
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- S. Huber
- Technische Universität München, Physik Department, 85748 Garching, Germany
- S. Ishimoto
- Yamagata University, Yamagata 992-8510, Japan
- A. Ivanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Yu. Ivanshin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- T. Iwata
- Yamagata University, Yamagata 992-8510, Japan
- R. Jahn
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- V. Jary
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- P. Jasinski
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- P. Joerg
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- R. Joosten
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- E. Kabuß
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- B. Ketzer
- Technische Universität München, Physik Department, 85748 Garching, Germany
- G.V. Khaustov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- Yu.A. Khokhlov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- Yu. Kisselev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- F. Klein
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- K. Klimaszewski
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- J.H. Koivuniemi
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- V.N. Kolosov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- K. Kondo
- Yamagata University, Yamagata 992-8510, Japan
- K. Königsmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- I. Konorov
- Lebedev Physical Institute, 119991 Moscow, Russia
- V.F. Konstantinov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- A.M. Kotzinian
- University of Turin, Department of Physics, 10125 Turin, Italy
- O. Kouznetsov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Krämer
- Technische Universität München, Physik Department, 85748 Garching, Germany
- Z.V. Kroumchtein
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- N. Kuchinski
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- F. Kunne
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- K. Kurek
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- R.P. Kurjata
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A.A. Lednev
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- A. Lehmann
- Universität Erlangen–Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- M. Levillain
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- S. Levorato
- Trieste Section of INFN, 34127 Trieste, Italy
- J. Lichtenstadt
- Tel Aviv University, School of Physics and Astronomy, 69978 Tel Aviv, Israel
- A. Maggiora
- Torino Section of INFN, 10125 Turin, Italy
- A. Magnon
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- N. Makke
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- G.K. Mallot
- CERN, 1211 Geneva 23, Switzerland
- C. Marchand
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- A. Martin
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- J. Marzec
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- J. Matousek
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- H. Matsuda
- Yamagata University, Yamagata 992-8510, Japan
- T. Matsuda
- University of Miyazaki, Miyazaki 889-2192, Japan
- G. Meshcheryakov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- W. Meyer
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- T. Michigami
- Yamagata University, Yamagata 992-8510, Japan
- Yu.V. Mikhailov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- Y. Miyachi
- Yamagata University, Yamagata 992-8510, Japan
- A. Nagaytsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- T. Nagel
- Technische Universität München, Physik Department, 85748 Garching, Germany
- F. Nerling
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- S. Neubert
- Technische Universität München, Physik Department, 85748 Garching, Germany
- D. Neyret
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- V.I. Nikolaenko
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- J. Novy
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- W.-D. Nowak
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- A.S. Nunes
- LIP, 1000-149 Lisbon, Portugal
- A.G. Olshevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- I. Orlov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Ostrick
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- R. Panknin
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- D. Panzieri
- University of Eastern Piedmont, 15100 Alessandria, Italy
- B. Parsamyan
- University of Turin, Department of Physics, 10125 Turin, Italy
- S. Paul
- Technische Universität München, Physik Department, 85748 Garching, Germany
- S. Platchkov
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- J. Pochodzalla
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- V.A. Polyakov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- J. Pretz
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- M. Quaresma
- LIP, 1000-149 Lisbon, Portugal
- C. Quintans
- LIP, 1000-149 Lisbon, Portugal
- S. Ramos
- LIP, 1000-149 Lisbon, Portugal
- C. Regali
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- G. Reicherz
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- E. Rocco
- CERN, 1211 Geneva 23, Switzerland
- N.S. Rossiyskaya
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- D.I. Ryabchikov
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- A. Rychter
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- V.D. Samoylenko
- State Research Center of the Russian Federation, Institute for High Energy Physics, 142281 Protvino, Russia
- A. Sandacz
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- M. Sapozhnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- S. Sarkar
- Matrivani Institute of Experimental Research & Education, Calcutta 700 030, India
- I.A. Savin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- G. Sbrizzai
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- P. Schiavon
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- C. Schill
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- T. Schlüter
- Ludwig-Maximilians-Universität München, Department für Physik, 80799 Munich, Germany
- K. Schmidt
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- H. Schmieden
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- K. Schönning
- CERN, 1211 Geneva 23, Switzerland
- S. Schopferer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- M. Schott
- CERN, 1211 Geneva 23, Switzerland
- O.Yu. Shevchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- L. Silva
- LIP, 1000-149 Lisbon, Portugal
- L. Sinha
- Matrivani Institute of Experimental Research & Education, Calcutta 700 030, India
- S. Sirtl
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- M. Slunecka
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- S. Sosio
- University of Turin, Department of Physics, 10125 Turin, Italy
- F. Sozzi
- Trieste Section of INFN, 34127 Trieste, Italy
- A. Srnka
- Institute of Scientific Instruments, AS CR, 61264 Brno, Czech Republic
- L. Steiger
- Trieste Section of INFN, 34127 Trieste, Italy
- M. Stolarski
- LIP, 1000-149 Lisbon, Portugal
- M. Sulc
- Technical University in Liberec, 46117 Liberec, Czech Republic
- R. Sulej
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- H. Suzuki
- Yamagata University, Yamagata 992-8510, Japan
- A. Szableski
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- T. Szameitat
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- P. Sznajder
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- S. Takekawa
- Torino Section of INFN, 10125 Turin, Italy
- J. ter Wolbeek
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- S. Tessaro
- Trieste Section of INFN, 34127 Trieste, Italy
- F. Tessarotto
- Trieste Section of INFN, 34127 Trieste, Italy
- F. Thibaud
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- S. Uhl
- Technische Universität München, Physik Department, 85748 Garching, Germany
- I. Uman
- Ludwig-Maximilians-Universität München, Department für Physik, 80799 Munich, Germany
- M. Virius
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- L. Wang
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- T. Weisrock
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- M. Wilfert
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- R. Windmolders
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- H. Wollny
- CEA IRFU/SPhN Saclay, 91191 Gif-sur-Yvette, France
- K. Zaremba
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- M. Zavertyaev
- Lebedev Physical Institute, 119991 Moscow, Russia
- E. Zemlyanichkina
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Ziembicki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A. Zink
- Universität Erlangen–Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- DOI
- https://doi.org/10.1016/j.nuclphysb.2014.07.020
- Journal volume & issue
-
Vol. 886,
no. C
pp. 1078 – 1101
Abstract
Exclusive production of the isoscalar vector mesons ω and ϕ is measured with a 190 GeV/c proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable xF of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on xF and on the invariant mass MpV of the system formed by fast proton pfast and vector meson V is discussed in terms of diffractive production of pfastV resonances in competition with central production. The measurement of the spin density matrix element ρ00 of the vector mesons in different selected reference frames provides another handle to distinguish the contributions of these two major reaction types. Again, dependences of the alignment on xF and on MpV are found. Most of the observations can be traced back to the existence of several excited baryon states contributing to ω production which are absent in the case of the ϕ meson. Removing the low-mass MpV resonant region, the OZI rule is found to be violated by a factor of eight, independently of xF.
