منابع مشابه
Stable Multiquark Interactions
The necessity of adding higher order multiquark interactions to the three flavor NJL model with UA(1) breaking, in order to stabilize its vacuum, is discussed.
متن کاملStability of Multiquark Systems
We give a brief review of developments in the field of exotic hadrons formed of more than three quarks and/or antiquarks. In particular we discuss the stability of multiquark systems containing heavy flavours. We show that the gluon exchange model and the chiral constituent quark model based Goldstone boson (pseudoscalar meson) exchange give entirely different results.
متن کاملElusive multiquark spectroscopy ∗
A review is presented of past and recent attempts to build multiquark states within current models already describing ordinary mesons and baryons. This includes: coherence in the chromomagnetic interaction, tetraquarks with two heavy quarks, Steiner-tree models of confinement, and hadronic molecules, in particular in the hidden-charm sector. Some emphasis is put on the difficulties encountered ...
متن کاملLight and heavy multiquark spectroscopy
The recently found or claimed new hadrons aroused a renewed interest into the spectroscopy of rare or exotic particles [1,2]. The activity in this field is unfortunately rather fluctuating. For instance, experiments having ample data sets with pions, kaons, protons and neutrons did not look very seriously at invariant mass plots with baryon number B = 1 and strangeness S = 1, until some pentaqu...
متن کاملEvolution of relativistic multiquark systems.
The short-distance behavior of multiquark wavefunctions can be systematically computed in perturbative &CD. In this paper we analyze the wavefunction of a four-quark color-singlet bound state in SU(2)c as an analogue to the six-quark problem in QCD. We first solve the QCD evolution equation for the multi-quark distribution amplitude at short distances in the basis of completely antisymmetrized ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Il Nuovo Cimento A
سال: 1985
ISSN: 0369-3546,1826-9869
DOI: 10.1007/bf02730409