Results 41 to 50 of about 47,883 (261)
Constituent and current quark masses at low chiral energies [PDF]
, 2001 Light constituent quark masses and the corresponding dynamical quark masses are determined by data, the Quark-Level Linear $\sigma$ Model, and infrared QCD.
Scadron, M. D., Kleefeld, F., Rupp, G.
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Transition temperature in QCD with physical light and strange quark masses [PDF]
, 2006 We present results from a calculation of the transition temperature in QCD with two light and one heavier (strange) quark mass on lattices with temporal extent N_t =4 and 6. Calculations with improved staggered fermions have been performed with a strange
Aoki Y +5 more
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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.
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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
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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 ...
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Recent progresses in strange quark stars
Frontiers in Astronomy and Space SciencesAccording to the hypothesis that strange quark matter may be the true ground state of matter at extremely high densities, strange quark stars should be stable and could exist in the Universe. It is possible that pulsars may actually be strange stars, but
Xiao-Li Zhang +3 more
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Discriminating hadronic and quark stars through gravitational waves of fluid pulsation modes [PDF]
, 2013 We investigate non-radial oscillations of hadronic, hybrid and pure self-bound strange quark stars with maximum masses above the mass of the recently observed massive pulsars PSR J1614-2230 and PSR J0348-0432 with $M \approx 2 M_{\odot}$.
Flores, C. V., Lugones, G.
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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.
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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
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Effects of density-dependent quark mass on phase diagram of three-flavor quark matter
, 2005 Considering the density dependence of quark mass, we investigate the phase transition between the (unpaired) strange quark matter and the color-flavor-locked matter, which are supposed to be two candidates for the ground state of strongly interacting ...
Li Xue-Qian, M. Alford, Zhang Xiao-Bing
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