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Estudo de interacoes hadronicas e altas energias.

Grant number:00/04422-7
Support Opportunities:Research Projects - Thematic Grants
Start date: October 01, 2000
End date: November 30, 2004
Field of knowledge:Physical Sciences and Mathematics - Physics - Nuclear Physics
Principal Investigator:Yogiro Hama
Grantee:Yogiro Hama
Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
City of the host institution:São Paulo
Principal investigatorsGastão Inácio Krein
Associated research grant(s):01/05122-0 - Yuri mikhailovich sinyukov | bogolubov institute for theoretical physics - ucrania, AV.EXT
Associated scholarship(s):04/09794-0 - Piston effect in qcd phase transition., BP.PD
98/00317-2 - Hydrodynaimical evolution of quark and hadronic matter in high-energy heavy-ion collisions., BP.PD

Abstract

The purpose of the project is to study the high-energy (GeV~TeV) hadron-hadron, hadron-nucleus and nucleus-nucleus interactions, in order to clarify the elementary structure of the hadrons and the mechanisms of reactions involving hadronic matter formed in these collisions. With the simultaneous analysis of these systems, we intend to reach a unified comprehension of hadronic interactions. This analysis faces with the problem of describing strongly-interacting many-body systems controlled by a relativistic dynamics, to which no fundamental and tractable theory is available yet. Within this context, the elaboration of phenomenological models is crucial as an intermediate step toward this direction. Specifically, problems treated in the project are i) description of (total, elastic, inelastic and diffrative) cross sections and inclusive spectra of particles in multiple production; ii) correlations among produced particles, interferometry, multiplicity distributions and fluctuations; iii) production and suppression of strangeness and charm in hadronic matter; iv) exotic events (Centauros, Chirons, etc.); v) description of the dynamics of sub-nuclear and sub-hadronic degrees of freedom; vi) models of hadrons (Skyrmions and bags); vii) LattQCD; etc. Among the different working methods to analyze experimental data, we have statistical and hydrodynamic models, string models, eikonal models, intranuclear cascades (having the parameters of these models to be understood in terms of non-perturbative QCD), non-relativistic QCD, QCD sum rules, methods of many-body problems applied to effective fields, lattice Monte Carlo algorithms, etc. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (21)
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
P. C. BEGGIO; Y. HAMA. A new scheme for calculation of the multiplicity distributions in hadronic interactions. Brazilian Journal of Physics, v. 37, p. 1164-1170, . (00/04422-7, 04/10619-9)
AVILA‚ RF; LUNA‚ EGS; MENON‚ MJ. Analytic models and forward scattering from accelerator to cosmic-ray energies. Physical Review D, v. 67, n. 5, p. 054020, . (00/04422-7)
M. GAZDZICKI; M. I. GORENSTEIN; F. GRASSI; Y. HAMA; T. KODAMA; O. SOCOLOWSKI JR.. Incident-energy dependence of the effective temperature in heavy-ion collisions. Brazilian Journal of Physics, v. 34, p. 322-325, . (00/04422-7)
LUNA‚ EGS; MENON‚ MJ. Extrema bounds for the soft Pomeron intercept. Physics Letters B, v. 565, p. 123-130, . (00/04422-7)
NAVARRA‚ FS; NIELSEN‚ M.; MARQUES DE CARVALHO‚ RS; KREIN‚ G.. Charmonium-pion cross section from QCD sum rules. Physics Letters B, v. 529, n. 1, p. 87-92, . (00/04422-7, 98/06590-2, 99/12987-5)
CSÖRGO‚ T.; GRASSI‚ F.; HAMA‚ Y.; KODAMA‚ T.. Simple solutions of relativistic hydrodynamics for longitudinally and cylindrically expanding systems. Physics Letters B, v. 565, p. 107-115, . (00/04422-7, 02/11344-8, 99/09113-3)
PADULA‚ S.S.; KREIN‚ G.; CSÖRG{\H{O}}‚ T.; HAMA‚ Y.; PANDA‚ PK. Back-to-back correlations for finite expanding fireballs. Physical Review C, v. 73, n. 4, p. 044906, . (02/11344-8, 04/10619-9, 00/04422-7, 99/08544-0)
C.E. AGUIAR; R. ANDRADE; F. GRASSI; Y. HAMA; T. KODAMA; T. OSADA; O. SOCOLOWSKI JR.. Comparison between classification using impact parameter and using number of participants in relativistic nuclear collisions. Brazilian Journal of Physics, v. 34, p. 319-321, . (00/04422-7)
Y. HAMA; T. KODAMA; O. SOCOLOWSKI JR.. Topics on hydrodynamic model of nucleus-nucleus collisions. Brazilian Journal of Physics, v. 35, n. 1, p. 24-51, . (00/04422-7)
MARTINI‚ AF; MENON‚ MJ. . Physics Letters B, v. 570, n. 1, p. 53-58, . (00/04422-7)
NAGY‚ MI; CSÖRG{\H{O}}‚ T.; CSANÁD‚ M.. Detailed description of accelerating‚ simple solutions of relativistic perfect fluid hydrodynamics. Physical Review C, v. 77, n. 2, p. 024908, . (00/04422-7, 02/11344-8, 99/09113-3)
ARBEX‚ N.; GRASSI‚ F.; HAMA‚ Y.; SOCOLOWSKI JR‚ O.. Decoupling chemical and thermal freeze outs in hydrodynamics. Physical Review C, v. 64, n. 6, p. 064906, . (00/04422-7)
A. F. MARTINI; M. J. MENON; J. MONTANHA. Correlations between total cross sections and slopes. Brazilian Journal of Physics, v. 34, p. 263-267, . (00/04422-7)
E. G. S. LUNA; M. J. MENON; J. MONTANHA. Extensions of the extrema bounds for the pomeron intercept to meson-proton, gamma-proton and gamma-gamma scattering. Brazilian Journal of Physics, v. 34, p. 268-271, . (00/04422-7)
BARROS JR‚ CC; HAMA‚ Y.. Low energy pion-hyperon interaction. Physical Review C, v. 63, n. 6, p. 065203, . (98/02249-4, 00/04422-7)
CSÖRG{\H{O}}‚ T.; AKKELIN‚ SV; HAMA‚ Y.; LUKÁCS‚ B.; SINYUKOV‚ Y.M.. Observables and initial conditions for self-similar ellipsoidal flows. Physical Review C, v. 67, n. 3, p. 034904, . (00/04422-7, 01/05122-0, 99/09113-3)
CSÖRG{\H{O}}‚ T.; NAGY‚ MI; CSANÁD‚ M.. New family of simple solutions of relativistic perfect fluid hydrodynamics. Physics Letters B, v. 663, n. 4, p. 306-311, . (02/11344-8, 00/04422-7, 99/09113-3)
LUNA‚ EGS; MENON‚ MJ; MONTANHA‚ J.. An analysis on extrema and constrained bounds for the soft pomeron intercept. Nuclear Physics A, v. 745, n. 1, p. 104-120, . (00/04422-7)
SOCOLOWSKI‚ O.; GRASSI‚ F.; HAMA‚ Y.; KODAMA‚ T.. Fluctuations of the initial conditions and the continuous emission in the hydrodynamical description of two-pion interferometry. Physical Review Letters, v. 93, n. 18, p. 182301, . (00/04422-7)
CARVALHO‚ F.; DURAES‚ FO; NAVARRA‚ FS; NIELSEN‚ M.. Does the D^{-}/D^{+} Production Asymmetry Decrease at Large x_ {F}?. Physical Review Letters, v. 86, n. 24, p. 5434-5437, . (00/04422-7)
MENON, M. J.; ÁVILA, REGINA FONSECA. Critical analysis of derivative dispersion relations at high energies. Nuclear Physics A, v. 744, p. 249-272, . (00/04422-7)