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

0432836 - ÚPT 2015 RIV NL eng J - Journal Article
Adolph, C. - Akhunzyanov, R. - Alekseev, M. - Alexeev, G. D. - Amoroso, A. - Andrieux, V. - Anosov, V. A. - Austregisilio, A. - Badelek, B. - Balestra, F. - Barth, J. - Baum, G. - Beck, R. - Bedfer, Y. - Berlin, A. - Bernhard, J. - Bicker, K. - Bieling, J. - Birsa, R. - Bisplinghoff, J. - Bodlak, M. - Boer, M. - Bordalo, P. - Bradamante, F. - Braun, C. - Bressan, A. - Büchele, M. - Burtin, E. - Capozza, L. - Chiosso, M. - Chung, S.U. - Cicuttin, A. - Crespo, M. - Curiel, Q. - Dalla Torre, S. - Dasgupta, S. S. - Dasgupta, S. - Denisov, O. - Donskov, S. - Doshita, N. - Duic, V. - Dünnweber, W. - Dziewiecki, M. - Efremov, A.V. - Elia, C. - Eversheim, P. - Eyrich, W. - Faessler, M. - Ferrero, A. - Filin, A. - Finger, M. - Finger jr., M. - Fischer, H. - Franco, C. - Fresne von Hohenesche, N. - Friedrich, J. - Frolov, V. - Gautheron, F. - Gavrichtchouk, O. - Gerassimov, S. - Geyer, R. - Gnesi, I. - Gobbo, B. - Goertz, S. - Gorzellik, M. - Grabmüller, S. - Grasso, A. - Grube, B. - Grussemmeyer, T. - Guskov, A. - Guthörl, T. - Haas, F. - von Harrach, D. - Hahne, D. - Hashimoto, R. - Heinsius, F. - Herrmann, F. - Hinterberger, F. - Höppner, Ch. - Horikawa, N. - d'Hose, N. - Huber, S. - Ishimoto, S. - Ivanov, A. - Ivanshin, Yu. - Iwata, T. - Jahn, R. - Jary, V. - Jasinski, P. - Joerg, P. - Joosten, R. - Kabuss, E. - Ketzer, B. - Khaustov, G. - Khokhlov, Y. - Kisselev, Y. - Klein, F. - Klimaszewski, K. - Koivuniemi, J. - Kolosov, V. - Kondo, K. - Königsmann, K. - Konorov, I. - Konstantinov, V. - Kotzinian, A. - Kouznetsov, O. - Král, Z. - Krämer, M. - Kroumchtein, Z. - Kuchinski, N. - Kunne, F. - Kurek, K. - Kurjata, R. P. - Lednev, A. - Lehmann, A. - Levillain, M. - Levorato, S. - Lichtenstadt, J. - Maggiora, A. - Magnon, A. - Makke, N. - Mallot, G. - Marchand, C. - Martin, A. - Marzec, J. - Matoušek, J. - Matsuda, H. - Matsuda, T. - Meshcheryakov, G. - Meyer, W. - Michigami, T. - Mikhailov, Y. - Miyachi, Y. - Nagaytsev, A. - Nagel, T. - Nerling, F. - Neubert, S. - Neyret, D. - Nový, J. - Nikolaenko, V. - Nowak, W. D. - Nunes, A.S. - Orlov, I. - Olshevsky, A. - Ostrick, M. - Panknin, R. - Panzieri, D. - Parsamyan, B. - Paul, S. - Pešek, M. - Platchkov, S. - Pochodzalla, J. - Polyakov, V. - Pretz, J. - Quaresma, M. - Quintans, C. - Ramos, S. - Regali, C. - Reicherz, G. - Rocco, E. - Rossiyskaya, N. S. - Ryabchikov, D. - Rychter, A. - Samoylenko, V. - Sandacz, A. - Sapozhnikov, M. - Sarkar, S. - Savin, I. - Sbrizzai, G. - Schiavon, P. - Schill, C. - Schlütter, T. - Schmidt, A. - Schmidt, K. - Schmiden, H. - Schönning, K. - Schopferer, S. - Schott, M. - Shevchenko, O. - Silva, L. - Sinha, L. - Sirtl, S. - Slunecka, M. - Sosio, S. - Sozzi, F. - Steiger, L. - Srnka, Aleš - Stolarski, M. - Sulc, M. - Suzuki, H. - Sulej, R. - Szabelski, A. - Szameitat, T. - Sznajder, P. - Takekawa, S. - Ter Wolbeek, J. - Tessaro, S. - Tessarotto, F. - Thibaud, F. - Uhl, S. - Uman, I. - Virius, M. - Wang, L. - Weisrock, T. - Wilfert, M. - Windmolders, R. - Wollny, H. - Zaremba, K. - Zavertyaev, M. - Zemlyanichkina, E. - Ziembicki, M. - Zink, A.
Spin alignment and violation of the OZI rule in exclusive omega and phi production in pp collisions.
Nuclear Physics. B. Roč. 886, SEP 2014 (2014), s. 1078-1101. ISSN 0550-3213. E-ISSN 1873-1562
R&D Projects: GA MŠMT(CZ) LO1212
Keywords : OZI rule * vector meson * pp collision * liquid hydrogen target
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 3.929, year: 2014

Exclusive production of the isoscalar vector mesons (omega) and (phi) is measured with a 190GeV/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(pV) of the system formed by fast proton p(fast) and vector meson V is discussed in terms of diffractive production of p(fast)V resonances in competition with central production. The measurement of the spin density matrix element (rho00) 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(pV) 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(pV) resonant region, the OZI rule is found to be violated by a factor of eight, independently of x(F).
Permanent Link: http://hdl.handle.net/11104/0237273