136 Annual Report 1998
8.13 T)-Niicleon Interactions by J.Kulpa and S.Wycech PL9901837
An analysis of the coupled T|N, TCN, ratN, yN [1] Arndt, A.M.Green, R.Workman and S.Wycech, channels was updated with several models for K Phys. Rev. C58(1998)3636 matrix [1]. The coupling to rat channel was found to be very small. [2] J. Kulpa, S.Wycech, Acta Phys. Polonica B29(1998) 3077 Nuclear states of t|-mesons are found to exist. Their widths are affected mildly by the absorption of eta by two-nucleon [2],
Pionium by J.Kulpa and S.Wycech PL9901838
Chances to produce pionium - an atomic state of [1] Proceedings of Int. Workshop on Exotic Atoms two K mesons - in nuclear collisions are calculated. andQCD, Dubna 1998 One finds a sizable probability to produce pionium in 2P states. The latter are generated by Coulomb fields of the colliding nuclei [1].
8.15 Magnetic Mixing of Nuclear States by S.Wycech PL9901839
A unique possibility to detect the mixing of provided by the IS electron. The chances to see nuclear states in magnetic field exists in highly this effect via the X-ray transitions are discussed [1], ionized 2291hg9+ toms. The magnetic field is a [1] F.F.Karpeshin, S.Wycech et al., Phys.Rev. C57(l 998)3085
8.16 Antiprotonic Atoms by J.Kulpa, R.Smolariczuk, S.Wycech PL9901840
The analysis of Polish-German PS209 [1] P.Lubinski, J.Jastrz^bski et.al., Phys. Rev. experiment performed at Low Energy Antiproton C57(1998)2962 Ring at CERN is going on [1,2]. It was found that at [2] R.Schmidt, F.J.Hartmann et al., Phys. Rev. very large distances antiprotons are repelled by the C58(1998)3195 nucleus. That is contrary to all previous expec- [3] S.Wycech, J.Kulpa, R.Smolanczuk et. al., Nucl. tations, one possible explanation might be due to the Phys. B(1999) 13Po nucleon-antinucleon quasibound state [3].
8.17 Systematics of Leading Particle Production by F.O.Duraes", F.S.Navarra", G.Wilk PL9901841
Using a QCD-inspired model developed by our photoproduction at DESY HERA [2,3,4], With a group for particle production, the interacting gluon small number of parameters (essentially only the model (IGM), we have made a systematic analysis nonperturbative gluon-gluon cross section and the of all available data on leading particle spectra [1], fraction of diffractive events) good agreement with These data include diffractive collisions and data is found. We show that the difference between DEPARTMENT OF NUCLEAR THEORY 137
pion and proton leading spectra is due to their [3] F.O.Duraes, F.S.Navarra and G.Wilk, Braz. J. different gluon distributions. We predict a Phys. 28(1998)505 universality in the diffractive leading particle spectra [4] F.O.Duraes, F.S.Navarra and G.Wilk, Proc. of in the large momentum region, which turns out to be the Vth Rio de Janeiro Int. Workshop on independent of the incident energy and of the Relativistic Aspects of Nuclear Physics, CBPF, projectile type. Rio de Janeiro 30 August - 2 September 1997, eds. T. Kodama et al., World Scientific 1998, [1] F.O.Duraes, F.S.Navarra and G.Wilk, Phys. p.416 Rev.D58(1998)094034 [2] F.O.Duraes, F.S.Navarra and G.Wilk, '' Institute de Fisica, Universidade de Sao Paulo, Mod.Phys. Lett. A13(1998)2873 Brazil.
8.18 Multiparticle Production Phenomenology by N.Suzuki1', M.Biyajima2), G. Wilk, Z.Wlodarczyk3 PL9901842
We have analysed cumulant moments of [1] N.Suzuki, M.Biyajirna, G.Wilk, Z.Wtodarczyk, negatively charged particles observed in hadron- Phys. Rev. C58(1998)1720 nucleus collisions [1]. Our goal was to demonstrate that fluctuations seen in those moments do not bear ]> Matsusho Ganken Junior College, Matsumoto, information of the fundamental aspects of Japan multiparticle production processes (as has been 2) Dept. of Phys., Shinshy Univ., Matsumoto, repeatedly argued recently on many occasions) but Japan result from the natural truncation of the observed 15 Inst. of Phys., Pedagogical Univ., Kielce, multiplicity distributions. Poland
8.19 HBT Interferometry by G.Wilk PL9901843
The perspectives of Bose-Einstein correlations sumarized for the use of the ALICE collaboration (known also as HBT interferomety) for the foreseen measurements of photons and neutral pions in the [1] G.Wilk, ALICE/98-53; Internal Note/PHYS; ALICE experiment at LHC have been discussed and 27 Sept. 1998
8.20 Global Geometry of Spacetime and Quantization by W.Piechocki and G.Jorjadze" PL9901844
We consider classical and quantum dynamics of [3] G.Jorjadze and W.Piechocki, Preprint gr- a relativistic particle in two-dimensional Lorentzian qc/9811094 spacetimes with constant curvature. It turns out that [4] G.Jorjadze and W.Piechocki, in: Proc. Intern. specification of the Lagrangian of a system and its Conf. "Particles, Fields and local symmetries are not sufficient for finding an [5] Conference Proceed. 453, Woodbury, New unique quantum system corresponding to the York, 1998) p.472 classical one. To quantive the system it is necessary [6] G.Jorjadze and W.Piechocki, in: Proc. XVII to specify the topology and global symmetries of the Workshop on Geometric Method in Physics, spacetime[l-8]. Biafcwieza, July 1998, in press [7] G.Jorjadze and W.Piechocki, in: Proc. Intern. [1] G.Jorjadze and W.Piechocki, Class. Quantum Seminar in Physics and Mathematics, Tbilisi, Grav. 15(1998)L41GJorjadze and W.Piechocki, Georgia, Sept. 1998, in press Theor. Math. Phys. 118(1999) in press [1] G.Jorjadze and W.Piechocki, in: Proc. XII Max [2] G.Jorjadze and W.Piechocki, Phys. Lett. B, Born Symposium, Wroclaw, Sept. 1998, in press 1999, in press (hep_th/970905) 0 Rozmadze Mathematical Inst., Tbilisi, Georgia