Testing Chiral Symmetry Breaking at DAΦNE
نویسنده
چکیده
منابع مشابه
Kaonic X-ray experiments at DAFNE using SIDDHARTA
The KN system at rest makes a sensitive testing ground for chiral SU(3) symmetry in QCD, especially for the explicit symmetry breaking induced by the relatively large mass of the strange quark. At the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati we study kaonic atoms, taking advantage of the low-energy kaons from Φ-mesons decaying nearly at rest. The low-energy antikaon-...
متن کاملPrecision measurements on kaonic hydrogen and kaonic deuterium: DEAR and SIDDHARTA
The SIDDHARTA (SIlicon Drift Detector for Hadronic Atom Research by Timing Application) experiment [1] represents the scientific and technical development of DEAR (DAΦNE Exotic Atom Research) [2], as part of the program dedicated to exotic atoms at DAΦNE [3]. The objective consists in an eV precision measurement of the kaonic hydrogen Kα line shift and width induced by the strong interaction, a...
متن کاملThermal Restoration of Chiral Symmetry in Supersymmetric Nambu-Jona-Lasinio Model with Soft SUSY Breaking
The supersymmetric version of the Nambu-Jona-Lasinio model is investigated in connection with the chiral symmetry breaking induced by a soft SUSY breaking term. It is found that the broken chiral symmetry due to the soft breaking term is restored at suitably high temperature and the symmetry restoration occurs as first-order phase transitions. The critical temperature at which the chiral symmet...
متن کاملSpectrum and Decays of Hadronic Atoms
Hadronic atoms are highly non-relativistic loosely bound systems of hadrons mainly formed by the Coulomb interaction. The study of these hadronic bound states has seen growing interest during recent years, because they provide important information on the behavior of QCD at low-energy. The DIRAC collaboration 1 at CERN measures the lifetime of the ππ atom, and plans to determine the ππ scatteri...
متن کاملar X iv : h ep - l at / 0 30 90 11 v 1 3 S ep 2 00 3 1 Chiral symmetry breaking and topology for all
We investigate spontaneous chiral symmetry breaking in SU(N) gauge theories at large N using overlap fermions. The exact zero modes and the low-lying modes of the Dirac operator provide the tools to gain insight into the interplay between chiral symmetry breaking and topology. We find that topology indeed drives chiral symmetry breaking at N = 3 as well as at large N. By comparing the results o...
متن کامل