Results 51 to 60 of about 113,434 (277)
Searching For Strange Quark Planets [PDF]
arXiv, 2021 Strange quark matter (SQM) may be the true ground state of matter. According to this SQM hypothesis, the observed neutron stars actually should all be strange quark stars. But distinguishing between neutron stars and strange quark stars by means of obser- vations is extremely difficult.
arxiv
J.Phys. G30 (2004) S725-S734, 2004 The paper provides a short report on strangeness production in ultrarelativistic nucleus-nucleus collision, with the main stress on strange particle abundances.
arxiv +1 more source
Strangelets and strange quark matter [PDF]
Nuclear Physics A, 1998 The properties of finite lumps of strange quark matter (strangelets) with emphasis on the two scenarios of producing strange matter in relativistic heavy ion collisions are summarized. As an outlook, the possibility of short-lived strange composites and charmed matter are discussed for coming heavy ion experiments.
openaire +3 more sources
A tale of two skyrmions: the nucleon's strange quark content in different large N_c limits [PDF]
, 2006 The nucleon's strange quark content comes from closed quark loops, and hence should vanish at leading order in the traditional large $N_c$ (TLNC) limit.
't Hooft +30 more
core +2 more sources
Strong and Weak Interactions of Strange Hadrons [PDF]
Prog.Theor.Phys.Suppl.120:95-110,1995, 1995 I review hadronic processes involving strange hadrons, especially hyperons from the quark structure point of view. The strong interaction of quarks expects several important new features when the strangeness is introduced upon the non-strange degrees of freedom.
arxiv +1 more source
Color superconductivity and the strange quark [PDF]
Proceedings of 29th Johns Hopkins Workshop on current problems in particle theory: strong matter in the heavens — PoS(JHW2005), 2006 At ultra-high density, matter is expected to form a degenerate Fermi gas of quarks in which there is a condensate of Cooper pairs of quarks near the Fermi surface: color superconductivity. In these proceedings I review some of the underlying physics, and discuss outstanding questions about the phase structure of ultra-dense quark matter.
openaire +5 more sources
Consistency between SU(3) and SU(2) covariant baryon chiral perturbation theory for the nucleon mass
Physics Letters B, 2017 Treating the strange quark mass as a heavy scale compared to the light quark mass, we perform a matching of the nucleon mass in the SU(3) sector to the two-flavor case in covariant baryon chiral perturbation theory.
Xiu-Lei Ren +5 more
doaj +1 more source
Non-perturbative structure of the polarized nucleon sea
, 2003 We investigate the flavour and quark-antiquark structure of the polarized nucleon by calculating the parton distribution functions of the nucleon sea using the meson cloud model. We find that the SU(2) flavor symmetry in the light antiquark sea and quark-
A. I. Signal +46 more
core +1 more source
Strange and charmed quarks in the nucleon [PDF]
Physical Review D, 1997 We discuss the general method of the calculation of the nucleon matrix elements of an operator associated with nonvalence quarks. The method is based on the QCD sum rules and low energy theorems. As an application of these considerations, we calculate the strange quark matrix element as well as the momentum distribution of the strangeness in the ...
openaire +3 more sources
Strangeness in the Nucleon [PDF]
AIPConf.Proc.939:3-6,2007, 2007 There are several different experimental indications, such as the strangeness contribution to the magnetic moment of the proton, sigma_{\pi N} term, strange spin polarization, ratio of strange and non strange quark flavor distributions which suggest that the nucleon contains a hidden strangeness component which is contradictory to the naive constituent
arxiv +1 more source