Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\phi$ production in pp collisions

Adolph, C.; Szabelski, A.; Michigami, T.; Kabuss, E.; Sznajder, P.; Kunne, F.; Reicherz, G.; Rossiyskaya, N.S.; Austregesilo, A.; Bernhard, J.; Berlin, A.; Ivanov, A.; Crespo, M.L.; Pretz, J.; Matsuda, T.; Hoppner, Ch.; Koivuniemi, J.H.; Schmieden, H.; Buchele, M.; Novy, J.; Hashimoto, R.; Uman, I.; Quaresma, M.; Gautheron, F.; Bicker, K.; Tessarotto, F.; Marchand, C.; Sulc, M.; Kolosov, V.N.; Konstantinov, V.F.; Horikawa, N.; Bodlak, M.; Zink, A.; Curiel, Q.; Schill, C.; Thibaud, F.; Gorzellik, M.; Hinterberger, F.; Burtin, E.; Jorg, P.; Parsamyan, B.; Khokhlov, Yu. A.; Schmidt, K.; Uhl, S.; Silva, L.; Braun, C.; Finger, M., Jr.; Kisselev, Yu.; Kuchinski, N.; Nikolaenko, V.I.; Franco, C.; Srnka, A.; Mikhailov, Yu. V.; Platchkov, S.; Gobbo, B.; Shevchenko, O.Yu.; Dziewiecki, M.; Savin, I.A.; Chung, S.U.; Ramos, S.; Lehmann, A.; Klein, F.; Ivanshin, Yu.; Baum, G.; Regali, C.; Olshevsky, A.G.; Sinha, L.; Guskov, A.; Ryabchikov, D.I.; Virius, M.; Miyachi, Y.; Alexeev, G.D.; Bressan, A.; Andrieux, V.; Sosio, S.; Maggiora, A.; Kurek, K.; Sandacz, A.; Ostrick, M.; Hahne, D.; Nunes, A.S.; Makke, N.; Rychter, A.; Barth, J.; Bedfer, Y.; Lednev, A.A.; Ferrero, A.; Denisov, O.Yu.; Mallot, G.K.; Eyrich, W.; Konorov, I.; Sarkar, S.; Elia, C.; Marzec, J.; Beck, R.; Rocco, E.; Schiavon, P.; Donskov, S.V.; Szameitat, T.; Bisplinghoff, J.; Magnon, A.; Guthorl, T.; Gavrichtchouk, O.P.; Samoylenko, V.D.; Grabmuller, S.; Kondo, K.; Grube, B.; Dasgupta, S.S.; Meshcheryakov, G.; Kotzinian, A.M.; Dalla Torre, S.; Gnesi, I.; Lichtenstadt, J.; Zavertyaev, M.; Khaustov, G.V.; Sbrizzai, G.; Goertz, S.; Neubert, S.; Martin, A.; Kurjata, R.P.; Ziembicki, M.; Levorato, S.; Jary, V.; Grasso, A.; Windmolders, R.; Schott, M.; Duic, V.; Nagaytsev, A.; Matousek, J.; Gerassimov, S.; Dunnweber, W.; Grussenmeyer, T.; Birsa, R.; Stolarski, M.; Quintans, C.; Efremov, A.; Eversheim, P.D.; Klimaszewski, K.; Nowak, W.D.; Akhunzyanov, R.; Schopferer, S.; Jahn, R.; Takekawa, S.; Faessler, M.; von Harrach, D.; Amoroso, A.; Capozza, L.; Wolbeek, J. ter; Finger, M.; Panzieri, D.; Herrmann, F.; Konigsmann, K.; Alexeev, M.G.; Sozzi, F.; Orlov, I.; Panknin, R.; Badelek, B.; Steiger, L.; Wang, L.; Jasinski, P.; Kramer, M.; Doshita, N.; Heinsius, F.H.; Schluter, T.; Fischer, H.; Ishimoto, S.; Sirtl, S.; Paul, S.; Matsuda, H.; Zaremba, K.; Dasgupta, S.; Schonning, K.; Sulej, R.; Kroumchtein, Z.V.; Haas, F.; Bieling, J.; Zemlyanichkina, E.; Bradamante, F.; Anosov, V.; Frolov, V.; Iwata, T.; Ketzer, B.; Levillain, M.; Wollny, H.; Boer, M.; Nerling, F.; Weisrock, T.; Filin, A.; Geyer, R.; Meyer, W.; Nagel, T.; Cicuttin, A.; Friedrich, J.M.; Suzuki, H.; Huber, S.; Pochodzalla, J.; Balestra, F.; von Hohenesche, N. du Fresne; d'Hose, N.; Polyakov, V.A.; Neyret, D.; Joosten, R.; Kouznetsov, O.; Sapozhnikov, M.; Slunecka, M.; Tessaro, S.; Wilfert, M.; Bordalo, P.; Chiosso, M.

doi:10.1016/j.nuclphysb.2014.07.020

Article
Report number	arXiv:1405.6376 ; CERN-PH-EP-2014-096 ; CERN-PH-EP-2014-096
Title	Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\phi$ production in pp collisions
Author(s)	Adolph, C. (Erlangen - Nuremberg U.) ; Akhunzyanov, R. (Dubna, JINR) ; Alexeev, M.G. (Turin U.) ; Alexeev, G.D. (Dubna, JINR) ; Amoroso, A. (Turin U. ; INFN, Turin) ; Andrieux, V. (DAPNIA, Saclay) ; Anosov, V. (Dubna, JINR) ; Austregesilo, A. (CERN ; Munich, Tech. U.) ; Badelek, B. (Warsaw U.) ; Balestra, F. (Turin U. ; INFN, Turin) ; Barth, J. (Bonn U.) ; Baum, G. (Bielefeld U.) ; Beck, R. (Bonn U., HISKP) ; Bedfer, Y. (DAPNIA, Saclay) ; Berlin, A. (Ruhr U., Bochum) ; Bernhard, J. (Mainz U., Inst. Kernphys.) ; Bicker, K. (CERN ; Munich, Tech. U.) ; Bieling, J. (Bonn U.) ; Birsa, R. (INFN, Trieste) ; Bisplinghoff, J. (Bonn U., HISKP) ; Bodlak, M. (Charles U.) ; Boer, M. (DAPNIA, Saclay) ; Bordalo, P. (LIP, Lisbon ; Lisbon, IST) ; Bradamante, F. (Trieste U. ; INFN, Trieste) ; Braun, C. (Erlangen - Nuremberg U.) ; Bressan, A. (Trieste U. ; INFN, Trieste) ; Buchele, M. (Freiburg U.) ; Burtin, E. (DAPNIA, Saclay) ; Capozza, L. (DAPNIA, Saclay) ; Chiosso, M. (Turin U. ; INFN, Turin) ; Chung, S.U. (Munich, Tech. U. ; Pusan Natl. U. ; Brookhaven) ; Cicuttin, A. (ICTP, Trieste ; INFN, Trieste) ; Crespo, M.L. (ICTP, Trieste ; INFN, Trieste) ; Curiel, Q. (DAPNIA, Saclay) ; Dalla Torre, S. (INFN, Trieste) ; Dasgupta, S.S. (Matrivani Inst., Calcutta) ; Dasgupta, S. (INFN, Trieste) ; Denisov, O.Yu. (INFN, Turin) ; Donskov, S.V. (Kurchatov Inst., Moscow) ; Doshita, N. (Yamagata U.) ; Duic, V. (Trieste U.) ; Dunnweber, W. (Munich U.) ; Dziewiecki, M. (Warsaw U. of Tech.) ; Efremov, A. (Dubna, JINR) ; Elia, C. (Trieste U. ; INFN, Trieste) ; Eversheim, P.D. (Bonn U., HISKP) ; Eyrich, W. (Erlangen - Nuremberg U.) ; Faessler, M. (Munich U.) ; Ferrero, A. (DAPNIA, Saclay) ; Filin, A. (Kurchatov Inst., Moscow) ; Finger, M. (Charles U.) ; Finger, M., Jr. (Charles U.) ; Fischer, H. (Freiburg U.) ; Franco, C. (LIP, Lisbon) ; von Hohenesche, N. du Fresne (Mainz U., Inst. Kernphys. ; CERN) ; Friedrich, J.M. (Munich, Tech. U.) ; Frolov, V. (CERN) ; Gautheron, F. (Ruhr U., Bochum) ; Gavrichtchouk, O.P. (Dubna, JINR) ; Gerassimov, S. (Lebedev Inst. ; Munich, Tech. U.) ; Geyer, R. (Munich U.) ; Gnesi, I. (Turin U. ; INFN, Turin) ; Gobbo, B. (INFN, Trieste) ; Goertz, S. (Bonn U.) ; Gorzellik, M. (Freiburg U.) ; Grabmuller, S. (Munich, Tech. U.) ; Grasso, A. (Turin U. ; INFN, Turin) ; Grube, B. (Munich, Tech. U.) ; Grussenmeyer, T. (Freiburg U.) ; Guskov, A. (Dubna, JINR) ; Guthorl, T. (Freiburg U.) ; Haas, F. (Munich, Tech. U.) ; von Harrach, D. (Mainz U., Inst. Kernphys.) ; Hahne, D. (Bonn U.) ; Hashimoto, R. (Yamagata U.) ; Heinsius, F.H. (Freiburg U.) ; Herrmann, F. (Freiburg U.) ; Hinterberger, F. (Bonn U., HISKP) ; Hoppner, Ch. (Munich, Tech. U.) ; Horikawa, N. (Nagoya U. ; Chubu U.) ; d'Hose, N. (DAPNIA, Saclay) ; Huber, S. (Munich, Tech. U.) ; Ishimoto, S. (Yamagata U. ; KEK, Tsukuba) ; Ivanov, A. (Dubna, JINR) ; Ivanshin, Yu. (Dubna, JINR) ; Iwata, T. (Yamagata U.) ; Jahn, R. (Bonn U., HISKP) ; Jary, V. (Prague, Tech. U.) ; Jasinski, P. (Mainz U., Inst. Kernphys.) ; Jorg, P. (Freiburg U.) ; Joosten, R. (Bonn U., HISKP) ; Kabuss, E. (Mainz U., Inst. Kernphys.) ; Ketzer, B. (Munich, Tech. U. ; Bonn U.) ; Khaustov, G.V. (Kurchatov Inst., Moscow) ; Khokhlov, Yu. A. (Kurchatov Inst., Moscow ; Moscow, MIPT) ; Kisselev, Yu. (Dubna, JINR) ; Klein, F. (Bonn U.) ; Klimaszewski, K. (Warsaw, Inst. Nucl. Studies) ; Koivuniemi, J.H. (Ruhr U., Bochum) ; Kolosov, V.N. (Kurchatov Inst., Moscow) ; Kondo, K. (Yamagata U.) ; Konigsmann, K. (Freiburg U.) ; Konorov, I. (Lebedev Inst. ; Munich, Tech. U.) ; Konstantinov, V.F. (Kurchatov Inst., Moscow) ; Kotzinian, A.M. (Turin U. ; INFN, Turin) ; Kouznetsov, O. (Dubna, JINR) ; Kramer, M. (Munich, Tech. U.) ; Kroumchtein, Z.V. (Dubna, JINR) ; Kuchinski, N. (Dubna, JINR) ; Kunne, F. (DAPNIA, Saclay) ; Kurek, K. (Warsaw, Inst. Nucl. Studies) ; Kurjata, R.P. (Warsaw U. of Tech.) ; Lednev, A.A. (Kurchatov Inst., Moscow) ; Lehmann, A. (Erlangen - Nuremberg U.) ; Levillain, M. (DAPNIA, Saclay) ; Levorato, S. (INFN, Trieste) ; Lichtenstadt, J. (Tel Aviv U.) ; Maggiora, A. (INFN, Turin) ; Magnon, A. (DAPNIA, Saclay) ; Makke, N. (Trieste U. ; INFN, Trieste) ; Mallot, G.K. (CERN) ; Marchand, C. (DAPNIA, Saclay) ; Martin, A. (Trieste U. ; INFN, Trieste) ; Marzec, J. (Warsaw U. of Tech.) ; Matousek, J. (Charles U.) ; Matsuda, H. (Yamagata U.) ; Matsuda, T. (Miyazaki U.) ; Meshcheryakov, G. (Dubna, JINR) ; Meyer, W. (Ruhr U., Bochum) ; Michigami, T. (Yamagata U.) ; Mikhailov, Yu. V. (Kurchatov Inst., Moscow) ; Miyachi, Y. (Yamagata U.) ; Nagaytsev, A. (Dubna, JINR) ; Nagel, T. (Munich, Tech. U.) ; Nerling, F. (Mainz U., Inst. Kernphys.) ; Neubert, S. (Munich, Tech. U.) ; Neyret, D. (DAPNIA, Saclay) ; Nikolaenko, V.I. (Kurchatov Inst., Moscow) ; Novy, J. (Prague, Tech. U.) ; Nowak, W.D. (Freiburg U.) ; Nunes, A.S. (LIP, Lisbon) ; Olshevsky, A.G. (Dubna, JINR) ; Orlov, I. (Dubna, JINR) ; Ostrick, M. (Mainz U., Inst. Kernphys.) ; Panknin, R. (Bonn U.) ; Panzieri, D. (Piemonte Orientale U., Alessandria ; INFN, Turin) ; Parsamyan, B. (Turin U. ; INFN, Turin) ; Paul, S. (Munich, Tech. U.) ; Platchkov, S. (DAPNIA, Saclay) ; Pochodzalla, J. (Mainz U., Inst. Kernphys.) ; Polyakov, V.A. (Kurchatov Inst., Moscow) ; Pretz, J. (Bonn U. ; Aachen, Tech. Hochsch.) ; Quaresma, M. (LIP, Lisbon) ; Quintans, C. (LIP, Lisbon) ; Ramos, S. (LIP, Lisbon ; Lisbon, IST) ; Regali, C. (Freiburg U.) ; Reicherz, G. (Ruhr U., Bochum) ; Rocco, E. (CERN) ; Rossiyskaya, N.S. (Dubna, JINR) ; Ryabchikov, D.I. (Kurchatov Inst., Moscow) ; Rychter, A. (Warsaw U. of Tech.) ; Samoylenko, V.D. (Kurchatov Inst., Moscow) ; Sandacz, A. (Warsaw, Inst. Nucl. Studies) ; Sapozhnikov, M. (Dubna, JINR) ; Sarkar, S. (Matrivani Inst., Calcutta) ; Savin, I.A. (Dubna, JINR) ; Sbrizzai, G. (Trieste U. ; INFN, Trieste) ; Schiavon, P. (Trieste U. ; INFN, Trieste) ; Schill, C. (Freiburg U.) ; Schluter, T. (Munich U.) ; Schmidt, K. (Freiburg U.) ; Schmieden, H. (Bonn U.) ; Schonning, K. (CERN) ; Schopferer, S. (Freiburg U.) ; Schott, M. (CERN) ; Shevchenko, O.Yu. (Dubna, JINR) ; Silva, L. (LIP, Lisbon) ; Sinha, L. (Matrivani Inst., Calcutta) ; Sirtl, S. (Freiburg U.) ; Slunecka, M. (Dubna, JINR) ; Sosio, S. (Turin U. ; INFN, Turin) ; Sozzi, F. (INFN, Trieste) ; Srnka, A. (Inst. Sci. Instruments, Brno) ; Steiger, L. (INFN, Trieste) ; Stolarski, M. (LIP, Lisbon) ; Sulc, M. (Liberec Tech. U.) ; Sulej, R. (Warsaw, Inst. Nucl. Studies) ; Suzuki, H. (Yamagata U. ; Chubu U.) ; Szabelski, A. (Warsaw, Inst. Nucl. Studies) ; Szameitat, T. (Freiburg U.) ; Sznajder, P. (Warsaw, Inst. Nucl. Studies) ; Takekawa, S. (Turin U. ; INFN, Turin) ; Wolbeek, J. ter (Freiburg U.) ; Tessaro, S. (INFN, Trieste) ; Tessarotto, F. (INFN, Trieste) ; Thibaud, F. (DAPNIA, Saclay) ; Uhl, S. (Munich, Tech. U.) ; Uman, I. (Munich U.) ; Virius, M. (Prague, Tech. U.) ; Wang, L. (Ruhr U., Bochum) ; Weisrock, T. (Mainz U., Inst. Kernphys.) ; Wilfert, M. (Mainz U., Inst. Kernphys.) ; Windmolders, R. (Bonn U.) ; Wollny, H. (DAPNIA, Saclay) ; Zaremba, K. (Warsaw U. of Tech.) ; Zavertyaev, M. (Lebedev Inst.) ; Zemlyanichkina, E. (Dubna, JINR) ; Ziembicki, M. (Warsaw U. of Tech.) ; Zink, A. (Erlangen - Nuremberg U.)
Publication	2014-09
Imprint	16 May 2014
Number of pages	24
Note	23 pages, 13 figures and 5 tables
In:	Nucl. Phys. B 886 (2014) 1078-1101
DOI	10.1016/j.nuclphysb.2014.07.020
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN SPS ; COMPASS NA58
Free keywords	QCD ; branching fraction ; particle and resonance production ; experimental results ; OZI rule ; vector meson production ; tensor polarisation
Abstract	Exclusive production of the isoscalar vector mesons $\omega$ and $\phi$ 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 $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass $M_{p\mathrm{V}}$ of the system formed by fast proton $p_\mathrm{fast}$ and vector meson $V$ is discussed in terms of diffractive production of $p_\mathrm{fast}V$ resonances in competition with central production. The measurement of the spin density matrix element $\rho_{00}$ 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 $x_{F}$ and on $M_{p\mathrm{V}}$ are found. Most of the observations can be traced back to the existence of several excited baryon states contributing to $\omega$ production which are absent in the case of the $\phi$ meson. Removing the low-mass $M_{p\mathrm{V}}$ resonant region, the OZI rule is found to be violated by a factor of eight, independently of $x_\mathrm{F}$.
Copyright/License	publication: © 2014-2024 The Author(s) (License: CC-BY-3.0), sponsored by SCOAP³ preprint: © 2014-2024 CERN (License: CC-BY-4.0)

$Mechanisms for exclusive vector meson production at high energies. Left: Resonant single diffractive dissociation of the beam proton to a resonance X with subsequent decay. Middle: Non-resonant single diffractive excitation of the beam proton. The blob in the upper vertex denotes both point-like and non-point-like interactions. Right: Central production.$ $Upper panels: One-dimensional (integrated) acceptances for $p\,p\,\rightarrow\,p\,p\,\omega, \omega\,\rightarrow\,\pi^+\pi^-\pi^0$ (left) and $p\,p\,\rightarrow\,p\,p\,\phi, \phi\,\rightarrow\,K^+K^-$ (right) as a function of $x_\mathrm{F}$ of the fast proton. Cuts used in the later analysis are illustrated by the vertical lines. Middle panels: $x_\mathrm{F}$ distributions for $pp\,\rightarrow\,pp\,\omega,\,\omega\,\rightarrow\,\pi^+\pi^-\pi^0$ (left) and $pp\,\rightarrow\,pp\,\phi,\,\phi\,\rightarrow\,K^+K^-$, acceptance uncorrected. Lower panels: The same as shown in the middle panels, but acceptance corrected and for $0.6<x_\mathrm{F}<0.9$.$ $Upper panels: One-dimensional (integrated) acceptances for $p\,p\,\rightarrow\,p\,p\,\omega, \omega\,\rightarrow\,\pi^+\pi^-\pi^0$ (left) and $p\,p\,\rightarrow\,p\,p\,\phi, \phi\,\rightarrow\,K^+K^-$ (right) as a function of $x_\mathrm{F}$ of the fast proton. Cuts used in the later analysis are illustrated by the vertical lines. Middle panels: $x_\mathrm{F}$ distributions for $pp\,\rightarrow\,pp\,\omega,\,\omega\,\rightarrow\,\pi^+\pi^-\pi^0$ (left) and $pp\,\rightarrow\,pp\,\phi,\,\phi\,\rightarrow\,K^+K^-$, acceptance uncorrected. Lower panels: The same as shown in the middle panels, but acceptance corrected and for $0.6<x_\mathrm{F}<0.9$.$ Show more plots

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