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19 papers · 1 filter
Heavy-Flavour Pentaquarks in a Chiral Constituent Quark Model
M. Genovese, J. -M. Richard, FL. Stancu +1
Within the chiral constituent quark model of Glozman and Riska, we discuss the stability of heavy pentaquarks, i.e. hadrons containing four light quarks and a heavy antiquark. The…
Isospin Splittings of Baryons
K. Varga, M. Genovese, J. -M. Richard +1
We discuss the isospin-breaking mass differences among baryons, with particular attention in the charm sector to the , , and splittings…
Cu(2) nuclear resonance evidence for an original magnetic phase in aged 60K-superconductors RBa2Cu3O6+x (R=Tm,Y)
A. V. Dooglav, H. Alloul, O. N. Bakharev +7
It is widely believed that the long-range antiferromagnetic order in the RBa2Cu3O6+x compounds (R=Y and rare earths except of Ce, Pr, Tb) is totally suppressed for the oxygen index…
NMR study of the S=1/2 Heisenberg Ladder Cu2(C5H12N2)2Cl4 : Quantum phase transition and critical dynamics
G. Chaboussant, Y. Fagot-Revurat, M. -H. Julien +5
We present an extensive NMR study of the spin-1/2 antiferromagnetic Heisenberg ladder Cu2(C5H12N2)2Cl4 in a magnetic field range 4.5 - 16.7 T. By measuring the proton NMR relaxatio…
Charge density wave transport in submicron antidot arrays in NbSe3
Yu. I. Latishev, B. Pannetier, P. Monceau
We demonstrate for the first time that a periodic array of submicrometer holes (antidots) can be patterned into thin single NbSe3 crystals. We report on the study of charge density…
Twist-4 effects and dependence of diffractive DIS
M. Bertini, M. Genovese, N. N. Nikolaev +2
In this letter we report the direct perturbative QCD evaluation of twist-4 effects in diffractive DIS. They are large and have a strong impact on the dependence of diffractiv…