Summary
Several tests that have been proposed to determine the various components (nonstrange, strange and gluonic) of the pseudoscalar mesons η-η′-ι are briefly reviewed. The constraints provided by these tests do not allow an unambiguous determination of the strange components of the η′ and ι mesons. It is suggested that this would follow from the experimental measurement of the branching ratios BR(F±→η′π±) and BR(F±→ιπ±). The decay F±→ιπ±, in particular, would be crucial to understand the physical nature of the ι-meson or, differently stated, to establish (or to disprove) the validity of the η-η′-ι mixing.
Riassunto
Si discutono brevemente i vari criteri che sono stati suggeriti per la determinazione delle varie componenti (non-strana, strana e gluonica) dei mesoni pseudoscalari η-η′-ι. I vincoli forniti da questi criteri non permettono una determinazione sicura delle componenti strane in η′ e ι. Si suggerisce che tale determinazione sicura si avrebbe dalla misura sperimentale dei rapporti di decadimento BR(F±→η′π±) e BR(F±→ιπ±). Il decadimento F±→ιπ±, in particolare, sarebbe cruciale per capire la natura fisica del mesone ι o, detto, in maniera diversa, per confermare o negare la validità dello schema di mescolamento η-η′-ι.
Резюме
Вкратце обсуждаются некоторые эксперименты, которые были предложены для определения различных компонент (нестранных, странных и глюонных) псевдоскалярных мезонов η-η′-ι. Ограничения, связанные с проведением этих экспериментов, не позволяют однозначно определить странные компоненты η′ и ι мезонов. Предполагается, что странные компоненты могут быть извлечены из экспериментального измерения отношения ветвей (F±→η′π±) и отношения ветвей (F±→ιπ±). В частности, распад F±→ιπ± является решающим для понимания физической природы ι мезона для установления (или для опровержения) справедливости η-η′-ι смешивания.
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References
K. Ishikawa:Phys. Rev. D,20, 731 (1979);J. J. Coyne, P. M. Fishbane andS. Meshkov:Phys. Lett. B,91, 259 (1980).
J. L. Rosner:Phys. Rev. D,27, 1101 (1983), and ref. (4–15) quoted therein.W. F. Palmer andS. Pinsky: preprint of the Ohio State University. Mark III Collaboration as reported byJ. Perrier atThe VI Conference on Physics in Collision, Santa Cruz (1984). Report No. SLAC-PUB-3436.Particle Data Group:Rev. Mod. Phys.,56, No. 2, Part II (1984). See, for example,C. A. Heusch: Report No. SLAC-PUB-3556 (1985), and references therein.R. Sinha: preprint of University of Rochester.S. Okubo:Prog. Theor. Phys. Suppl.,63, 1 (1978);R. Sinha andS. Okubo:Phys. Rev. D,30, 2333 (1984).S. Okubo:Phys. Lett.,5, 165 (1963);G. Zweig: CERN Report No. TH-402 (1964), unpublished;J. Iizuka:Prog. Theor. Phys. Suppl.,37–38, 21 (1966).W. D. Apel, E. Bertolucci, M. L. Vincelli, S. V. Donskov, R. Johnson, A. V. Inyakin, V. A. Kachanov, W. Kittenberger, R. N. Krasnokutskiî, G. Leder, A. A. Lednev, I. Mannelli, Yu. V. Mikhaîlov, H. Muller, Yu. D. Prokoshkin, G. M. Pierazzini, F. Sergiampetri, G. Sigurdson, A. Scribano, D. Schinzel, H. Schneider, M. Steuer andR. S. Shuvalov:Yad. Fiz.,25, 561 (1977) (English translation):Sov. J. Nucl. Phys.,25, 300 (1977)).N. R. Stanton, K. W. Edwards, D. Legacey, P. Brockman, J. Gandsman, P. M. Patel, E. Shabazian, C. Zanfino, J. A. Dankowych, J. F. Martin, A. J. Pawlicki, J. D. Prentice andT.-S. Yoon:Phys. Lett. B,92, 353 (1980).N. G. Deshpande andG. Eilam:Phys. Rev. D,25, 270 (1982);J. L. Rosner:Phys. Rev. D,27, 1101 (1983).N. Aizawa, Z. Maki, I. Umemura andK. Yamamoto:Prog. Theor. Phys.,63, 962 (1980).M. D. Scadron:Phys. Rev. D,29, 2076 (1984).
F. Caruso, E. Predazzi, A. C. B. Antunes andJ. Tiomno: to be published inZ. Phys. C.
W. F. Palmer andS. Pinsky: preprint of the Ohio State University.
Mark III Collaboration as reported byJ. Perrier atThe VI Conference on Physics in Collision, Santa Cruz (1984). Report No. SLAC-PUB-3436.
Particle Data Group:Rev. Mod. Phys.,56, No. 2, Part II (1984).
See, for example,C. A. Heusch: Report No. SLAC-PUB-3556 (1985), and references therein.
R. Sinha: preprint of University of Rochester.
S. Okubo:Prog. Theor. Phys. Suppl.,63, 1 (1978);R. Sinha andS. Okubo:Phys. Rev. D,30, 2333 (1984).
S. Okubo:Phys. Lett.,5, 165 (1963);G. Zweig: CERN Report No. TH-402 (1964), unpublished;J. Iizuka:Prog. Theor. Phys. Suppl.,37–38 21 (1966).
W. D. Apel, E. Bertolucci, M. L. Vincelli, S. V. Donskov, R. Johnson, A. V. Inyakin, V. A. Kachanov, W. Kittenberger, R. N. Krasnokutskiî, G. Leder, A. A. Lednev, I. Mannelli, Yu. V. Mikhaîlov, H. Muller, Yu. D. Prokoshkin, G. M. Pierazzini, F. Sergiampetri, G. Sigurdson, A. Scribano, D. Schinzel, H. Schneider, M. Steuer andR. S. Shuvalov:Yad. Fiz.,25, 561 (1977) (English translation:Sov. J. Nucl. Phys.,25, 300 (1977)).
N. R. Stanton, K. W. Edwards, D. Legacey, P. Brockman, J. Gandsman, P. M. Patel, E. Shabazian, C. Zanfino, J. A. Dankowych, J. F. Martin, A. J. Pawlicki, J. D. Prentice andT.-S. Yoon:Phys. Lett. B,92, 353 (1980).
N. G. Deshpande andG. Eilam:Phys. Rev. D,25, 270 (1982);J. L. Rosner:Phys. Rev. D,27, 1101 (1983).
N. Aizawa, Z. Maki, I. Umemura andK. Yamamoto:Prog. Theor. Phys.,63, 962 (1980).
M. D. Scadron:Phys. Rev. D,29, 2076 (1984).
M. Einhorn andC. Quigg:Phys. Rev. D,12, 2015 (1975);J. Ellis, M. Gaillard andD. Nanopoulos:Nucl. Phys. B,100, 313 (1975);C. Quigg andJ. Rosner:Phys. Rev. D,17, 239 (1978);D. Fakirov andB. Stech:Nucl. Phys. B,133, 315 (1978).
N. P. Samios, M. Goldberg andB. T. Meadows:Rev. Mod. Phys.,46, 49 (1974).
N. W. Reay:Proceedings of the 1983 International Symposium on Lepton and Photon Interaction at High Energy (Cornell University, Ithaca, N. Y., 1984).
G. H. Trilling:Phys. Rep. C,75, 57 (1981).
U. Baur:Proceedings of the I Hellenic School on Elementary Particle Physics, Corfú, Greece, September 12–30 (1982).
R. Rückl:Weak decays of heavy flavours, CERN preprint (1983), to be published inPhys. Rep., and references therein.
H. Fritzsch andP. Minkowski:Phys. Lett. B,90, 455 (1980);Nucl. Phys. B,171, 413 (1980);Phys. Rep.,73, 67 (1981).
I. Bediaga andE. Predazzi: to be published.
C. H. Georgiopoulos, A. Napier, J. Schneps, K. W. Lai, J. LeBritton, Y. C. Lin, A. E. Pifer, H. C. Fenker, D. R. Green, J. R. Albright, T. F. Davenport, J. H. Goldman, S. L. Hagopian, J. E. Lannutti, G. Canough, C. C. Chang, T. C. Davis, R. W. Joyner, J. A. Poirier, J. M. Marraffino, J. W. Waters, M. S. Webster, E. G. H. Williams, J. Woosley, J. R. Finecec, S. Torres andW. P. Trower:Phys. Lett. B,152, 428 (1985).
H. Albrecht, U. Binder, G. Drews, G. Harder, H. Hasemann, A. Philipp, W. Schmidt-Parzefall, H. Schröder, H. D. Schulz, F. Selonke, R. Wurth, A. Drescher, B. Gräwe, W. Hofmann, A. Markees, U. Matthiesen, H. Scheck, J. Spengler, D. Wegener, R. Heller, K. R. Schubert, J. Stiewe, R. Waldi, S. Weseler, N. N. Brown, K. W. Edwards, W. R. Frisken, Ch. Fukunaga, D. J. Gilkinson, D. M. Gingrich, M. Goddard, P. C. H. Kim, R. Kutschke, D. B. Mac-Farlane, J. A. McKenna, K. W. McLean, A. W. Nilsson, R. S. Orr, P. Padley, P. M. Patel, J. D. Prentice, H. C. J. Seywerd, B. J. Stacey, T.-S. Yoon, J. C. Yun, R. Ammar, D. Coppage, R. Davis, S. Kanekal, N. Kwak, P. Böckmann, L. Jönsson, Y. Oku, M. Danilov, V. Lubimov, V. Matveev, N. Nagovitsin, V. Ryltsov, A. Semenov, Yu. Semenov, V. Shevchenko, V. Soloshenko, V. Sopov, I. Tichomirov, Yu. Zaitsev, R. Childers, C. W. Darden andH. Gennow:Phys. Lett. B,153, 343 (1985).
A. C. B. Antunes andF. Caruso:Phys. Rev. D,31, 1743 (1985).
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Bediaga, I., Caruso, F. & Predazzi, E. The process F±→Pπ± as a mean for determining the strange content of η′(ι) and the nature of the ι-Meson.. Nuov Cim A 91, 306–316 (1986). https://doi.org/10.1007/BF02819307
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DOI: https://doi.org/10.1007/BF02819307