Zobrazeno 1 - 10
of 690
pro vyhledávání: '"Oka, Makoto"'
A comprehensive study of the $S$-wave heavy tetraquark states with identical quarks and antiquarks, specifically $QQ{\bar Q'}\bar Q'$ ($Q, Q'=c,b$), $QQ\bar s\bar s$/$\bar Q\bar Q ss$, and $QQ\bar q\bar q$/$\bar Q\bar Q qq$ ($q=u,d$), are studied in
Externí odkaz:
http://arxiv.org/abs/2404.01238
We investigate the structure of ground-state heavy mesons within the light-front quark model, utilizing wave functions derived from the Single Gaussian Ansatz (SGA) and the Gaussian Expansion Method (GEM). By performing a $\chi^2$ fit to static prope
Externí odkaz:
http://arxiv.org/abs/2401.07933
Spectrum of the doubly heavy tetraquarks is studied in a constituent quark model including one-pion exchange (OPE) potential. Central and tensor forces induced by OPE between two light quarks are considered. Our results show that $I(J^P)=0(1^+)$ comp
Externí odkaz:
http://arxiv.org/abs/2308.05466
Publikováno v:
Phys. Rev. D108, 054033 (2023)
Effects of the $U(1)_A$ axial anomaly on the mass spectrum of singly heavy baryons (SHBs) is studied in terms of the chiral effective theory based on the chiral linear representation for light flavors. We consider SHBs made of both three quarks ($Qqq
Externí odkaz:
http://arxiv.org/abs/2307.15304
A new color basis system and confinement mechanism for multi-quark systems are proposed according to the string-type picture of QCD. The color string configurations in the strong coupling QCD are implemented in the set of color basis states. The exte
Externí odkaz:
http://arxiv.org/abs/2307.04310
We have investigated the internal structure of the open- and hidden-charmed ($DD^*$/$\bar DD^*$) molecules in the unified framework. We first fit the experimental lineshape of the $T^+_{cc}$ state and extract the $DD^*$ interaction, from which the $T
Externí odkaz:
http://arxiv.org/abs/2306.12406
Autor:
Suenaga, Daiki, Oka, Makoto
Publikováno v:
Phys. Rev. D 108, 014030 (2023)
Masses of positive-parity and negative-parity diquarks are investigated at finite temperature with a quark chemical potential. We employ the three-flavor Nambu-Jona-Lasinio model, in order to delineate chiral properties of the diquarks, in particular
Externí odkaz:
http://arxiv.org/abs/2305.09730
Autor:
Oka, Makoto
Short-range parts of the baryon-baryon ($BB$) interactions are analyzed from the spin-flavor $SU(6)_{sf}\supset SU(3)_f \times SU(2)_s$ symmetry viewpoint. Due to the Pauli principle of quarks, the symmetry structure of the wave functions is restrict
Externí odkaz:
http://arxiv.org/abs/2301.06026
A chiral effective theory of scalar and vector diquarks is formulated, which is based on $SU(3)_R\times SU(3)_L$ chiral symmetry and includes interactions between scalar and vector diquarks with one or two mesons. We find that the diquark interaction
Externí odkaz:
http://arxiv.org/abs/2212.08338
We calculate the mass spectrum of the $S$-wave fully-charmed tetraquark resonant states $cc\bar c\bar c $ in the nonrelativistic quark model, which successfully describes the charmonium spectrum. The four-body system is solved with the Gaussian expan
Externí odkaz:
http://arxiv.org/abs/2208.07292