References
R. S. Longacre andR. Aaron:Phys. Rev. Lett.,38, 1509 (1977).
J. L. Basdevant and E. L. Berger:Phys. Rev. D,16, 657 (1977).
M. G. Bowler, M. A. V. Game, I. J. R. Aitchison andJ. B. Dainton:Nucl. Phys.,97 B, 227 (1975).
Ph. Gavillet, P. Berge, A. Ferrando, R. Hemingway, S. O. Holmgren, M. Losty, J. C. Martin, L. Montanet, E. Pagiola, N. Yamdagni, R. Blokzijl, B. Jongejans, J. C. Kluyver, G. G. G. Massaro, J. Engeler, W. Kittel, J. Vergeest, R. Van de Walle, B. Foster, P. Grossman, P. Lamb andW. Z. McDowell:Phys. Lett.,69 B, 119 (1977).
J. Penegr, B. Aebischer, K. Freudenreich, R. Frosch, F. X. Gentit, P. Mühlemann, W. Wetzel, W. Beusch, V. Chaloupka, D. Websdale, P. Astbury, G. Lee, M. Letheren, G. Bellini, M. Di Corato, F. Palombo, P. G. Rancoita andG. Vegni:Nucl. Phys.,134 B, 436 (1978).
For a review of the A1 status and guidelines for where to search for it see, for instance,H. E. Haber andG. L. Kane:Nucl. Phys.,129 B, 429 (1977).
S. Bartalucci, S. Bertolucci, J. K. Bienlein, M. Fiori, P. Giromini, R. Laudan, E. Metz, C. Rippich andA. Sermoneta: preprint DESY 77/59 (1977).
T. Das, V. S. Mathur andS. Okubo:Phys. Rev. Lett.,19, 1067 (1967).
H. J. Schnitzer andS. Weinberg:Phys. Rev.,164, 1828 (1967). Actually, in order to get reasonable width for p and A1 in this reference as well as in ref. (8) a rather large D-wave in A1 decay was required while there is now experimental evidence showing that it is S-wave. See, for instance, ref. (5).
A 1 +D resonance with mass ~1.65 GeV and width 0.4 GeV was recently reported in ref. ( 5). This could be the first radial excitation of theA 1 (in agreement with our eq. (19)). Although there are reports of a strange pseudoscalar at 1.4 GeV (see G. W. Brandenburg, R. K. Carnegie, R. J.Cashmore, M. Davier, W. M. Dunwoodie, T. A. Lasinski, D. W. G. S. Leith, J. A. J. Matthews. P. Walden and S. H. Williams:Phys. Rev. Lett.,36, 1239 (1976)) no π -like exoitation has been seen up to date. Even if such excitations existed their decay constants C π-2(n) should be negligible in comparison with C π-2. See,H. Sazdjian:Nucl. Phys.,129 B, 319 (1977);N. H. Fuchs andH. Sazdjian: preprint IPNO/78-3 (1978).
J. J. Sakurai:Phys. Lett.,46 B, 207 (1973).
A. Bramon, E. Etim andM. Greco:Phys. Lett.,41 B, 609 (1972).
Particle Data Group:Rev. Mod. Phys.,48, No. 2 (1976).
V. L. Auslender, G. I. Buoker, E. V. Pakhtttsova, Y. N. Pbstov, V. A. Sidorov, A. N. Skrinskif andA. G. Khabakhpashev:Sov. Journ. Nucl. Phys.,9, 69 (1969).
D. Benaksas, G. Cosme, B. Jean-Marie, S. Jullian, F. Laplanche, J. Lefrancois, A. D. Liberman, G. Parrour, J. P. Repellin andG. Sauvage:Phys. Lett.,39 B, 289 (1972) obtain from their experimentfp-2/4π = 2.26 ± 0.25.
D. Bolliki, P. Gitjsti, T. Massam, L. Monari, F. Palmonari, G. Valenti andA. Ziohichi:Lett. Nuovo Cimento,15, 393 (1976).
R. K. Carnegie, R. J. Cashmore, W. M. Dunwoodie, T. A. Lasinski andD. W. G. S. Leith:Phys. Lett.,68 B, 287 (1977).
H. GrÄssler, P. Schmitz, H. M. Seyfert, H. Böttcher, J. Klabuhn, K. Lanius, T. Naumann, S. Nowak, K. Böckmann, K. Sternberger, M. J. Counihan, P. Kostka, D. R. O. Morrison, P. Schmid, K. Dzitjnikowska, J. Figiel, B. Leitner, J. Stiewe, H. Abramowicz andS. Otwinowski:Nucl. Phys.,121 B, 189 (1977).
R. K. Carnegie, R. J. Cashmore, M. Davier, W. M. Dunwoodie, T. A. Lasinski, D. W. G. S. Leith, J. A. J. Matthews, P. Walden andS. H. Williams:Phys. Rev. Lett.,36, 1239 (1976). D(1285) deoays into nonstrange particles except for KKπ (12%) which probably results from the chain decay D → δ π → Kkπ (see ref. (13)) and R. Nacasch, Ch. Defoix, L. Dobrzynski, P. Ladron de Guevara, R. Raghavan, M. Aguillar-Benitez, J. Diaz, A. Ferrando, E. Gil, J. A. Rubio, F. Barreiro, A. Gurtu, L. Montanet, A. M. Cooper, S. N. Ganguli, P. K. Malhotra and A. Subramanian:Nucl. Phys.,135 A, 203 (1978).
SLAC-LBL Collaboration, P. Le Comte:Meeting of the Division of Particles and Fields,American Physical Society, Argonne, October 1977; J. A. Jaros, G. S. Abrams, M. S. Alam, A. Barbaro Galtibri, A. M. Botarski, M. Breindenbach, W. Chinowsky, J. M. Dorp an, R. Ely, G. J. Feldman, J. M. Feller, A. Fong, B. Gobbi,G. Goldhaber, G. Hanson, A. D. Johnson, J. A. Kadtk, B. P. Kwan, P. Leoomte, A. M. Litke, D. Luke, V. Luth, R. J. Madaras, J. F. Martin, D. H. Miller, H. K. Nguyen, S. I. Parker, J. M. Paterson, M. L. Perl, I. Peruzzi, M. Piccolo, T. P. Pun, P. A. Rapidis, M. T. Ronan, R. R. Ross, D. L. Schaere, R. F. Schwitters, W. Tanenbaum, T. G. Trippe, G. H. Trilling, V. Vuillemin and D. E. Yount:Phys. Rev. Lett.,40, 1120 (1978).
PLUTO Collaboration, DESY, H. Meyer:Meeting of the APS-DPF, Argonne, 1977; G. Kines:1977 International Symposium on Leplon and Photon Interactions, Hamburg, August 1977.
J. L. Basdevant andE. L. Berger:Phys. Rev. Lett.,40, 994 (1978).
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On leave of absence from Pisa University, Italy.
Sponsored by the Italian Government, CNPq and FINEP under the Technical Cooperation Agreement Brasil-Italia (30 November 1972).
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Kimel, I., Caffarelli, R.V. Where does the A1 stand in relation to chiral symmetry?. Lett. Nuovo Cimento 23, 227–232 (1978). https://doi.org/10.1007/BF02770278
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DOI: https://doi.org/10.1007/BF02770278