Summary
New results on meson spectroscopy at KEK are presented. Experimental data on the reaction π-p→ηπ-p at 6.3 GeV/c have been collected by the Benkei spectrometer at the 12 GeV proton synchrotron to the aim of searching forIJ PC=11−+ states in the ηπ- system. A marked forward-backward asymmetry of the events is observed in the Gotffired-Jackson frame of the ηπ- system. The result of the partial-wave analysis shows a clear bump of theP + wave around 1320 MeV/c2. Checks for the result and the analysis are discussed.
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References
T. Inagaki et al.: Cryogenics, February 1984, p. 83.
A. Ando et al.:Phys. Rev. Lett.,57, 1296 (1986).
S. Fukui et al.:Phys. Lett. B,267, 293 (1991).
S. Fukui et al.:Phys. Lett. B,202, 441 (1988).
A. Donnachie andH. Mirzaie:Z. Phys. C,33, 407 (1987).
A. Donnachie andA. B. Clegg:Z. Phys. C,34, 257 (1987).
A. Ando et al.:Phys. Lett. B,291, 496 (1962).
Particle Data Group (M. Aguilar-Benitez et al.):Phys. Lett. B,170, 1 (1986);Particle Data Group (G. P. Yost et al.):Phys. Lett. B,204, 1 (1988);Particle Data Group (J. J. Hernandez et al.):Phys. Lett. B,239, 1 (1990).
T. Tsuru:Proceedings of the IV International Conference on Hadron Spectroscopy, Maryland, 12–16 August, 1991, edited byS. Oneda andD. C. Peaslee (World Scientific, 1991), p. 455.
Discussion of the A1 meson, Proceedings of the IV International Conference on Hadron Spectroscopy, Maryland, 12–16 August, 1991, edited byS. Oneda andD. C. Peaslee (World Scientific, 1991), p. 447.
S. Fukui et al.:Phys. Lett. B,257, 241 (1991).
K. Takamatsu:Proceedings of the III International Conference on Hadron Spectroscopy, Ajaccio, 23–27 September, 1989, edited byF. Binon et al. (Edition Frontières, 1990), p. 77.
H. Aoyagi et al.: to appear inPhys. Lett. B.
D. Alde et al.:Phys. Lett. B,205, 397 (1988).
H. Aoyagi et al.: Proceedings of the IV International Conference on Hadron Spectroscopy, Maryland, 12–16 August, 1991, edited byS. Oneda andD. C. Peaslee (World Scientific, 1991), p. 34.
M. Boutemeur andS. A. Sadovsky: private communication.
F. E. Close andH. J. Lipkin:Phys. Lett. B,196, 245 (1988).
M. Boutemeur andM. Poulet:Proceedings of the III International Conference on Hadron Spectroscopy, Ajaccio, 23–27 September, 1989, edited byF. Binon et al. (Edition Frontières, 1990), p. 119.
D. Alde et al.:Z. Phys. C,54, 549 (1992).
F. Viron andJ. Govaerts:Phys. Rev. Lett.,53, 2207 (1984);T. Barnes andF. E. Close:Phys. Lett. B,116, 365 (1982);M. Chanowitz andS. R. Sharpe:Nucl. Phys. B,222, 211 (1983) andErratum,228, 588 (1983);M. Tanimoto:Phys. Rev. D,27, 2648 (1983);N. Isgur, R. Kokoski andJ. Parton:Phys. Rev. Lett.,54, 869 (1985); For recent reviews seeF. E. Close:Rep. Prog. Phys.,51, 833 (1988) andT. H. Burnett andS. R. Sharpe:Annu. Rev. Nucl. Part. Sci.,40, 327 (1990).
F. Iddir et al.:Phys. Lett. B,205, 564 (1988).
S. F. Tuan, T. Ferbel andR. H. Dalitz:Phys. Lett. B,213, 537 (1988).
W. D. Appel et al.:Nucl. Phys. B,193, 269 (1981).
C. Evangelista et al.:Nucl. Phys. B,178, 197 (1981).
D. Underwood et al.:Phys. Rev. D,11, 2345 (1975).
M. Zielinski et al.:Z. Phys. C,31, 545 (1986).
W. E. Cleland et al.:Nucl. Phys. B,208, 228 (1982).
M. Boutemeur:Proceedings of the International Workshop on Glueballs, Hybrids, and Exotic Hadrons, August 29–September 1, 1988, BNL, Upton, N.Y., edited byS. U. Chung,AIP Conf. Proc., No. 185, p. 389.
S. A. Sadovsky: IHEP 91-75, Protvino (1991). For the general arguments on the ambiguity of the solution, seeE. Barrelet:Nuovo Cimento A,8, 331 (1972);A. Gersten:Nucl. Phys. B,12, 537 (1969).
J. M. Blatt andV. Weiskopf:Theoretical Nuclear Physics (Wiley, New York, N.Y., 1952);J. D. Jackson:Nuovo Cimento,34, 1644 (1964).
Review of Particle Properties (K. Hikasa et al.):Phys. Rev. D,45, No. 11 (1992).
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Nagoya University Coll. Med. Tech.—Higashi, Nagoya 461, Japan
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E179 Collaboration., Aoyagi, H., Fukui, S. et al. New results on spectroscopy from BENKEI. Nuov Cim A 107, 1925–1939 (1994). https://doi.org/10.1007/BF02823587
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DOI: https://doi.org/10.1007/BF02823587