119589696
Bicovariant differential calculus on the two‐parameter quantum group GLp,q(2)
The quantum Lie algebra and quantum de Rham complex of the two‐parameter quantum group GLp,q(2) are presented. It is shown that the differential calculus on the two‐parameter quantum group GLp,q(2) given in this paper is bicovariant.
115770555
Symmetries and solutions of colored Yang-Baxter equation for six vertex model
121870295
Yang-Baxter matrix and *-calculi on quantum groups of A-series
The authors prove that the differential calculi on quantum groups of A-series given in this letter and in previous papers are *-calculi.
118983836
Quantum subgroups and quantum co-set spaces and differential calculi on them
121347479
De Rham complexes of q‐analog of general linear group GLq(N)
In this paper, a set of De Rham complexes of quantum group GLq(N) determined by one parameter r is given, and it is proven that the differential calculi on the quantum group GLq(N) given in this paper are bicovariant. The noncommutative differential calculi on the quantum groups SLq(N) and SUq(N) are also discussed.
115613624
Six vertex type solutions of Yang-Baxter equation with color parameters
122606637
High-energy Drell-Yan dimuon process in a Glauber model
In the framework of the Glauber model, taking into account the K'-factor, we analyse the Drell-Yan dimuon production cross sections for an absolute measurement of continuum dimuon (Drell-Yan) cross section in 800 GeV/c pp collisions. The calculated results of the leading order agree only poorly with the new experimental data, but there is a general agreement between the next-to-leading-order QCD correction results and the experimental data. It is shown that the QCD corrections to the Drell-Yan process cannot be omitted. Then, by means of the nuclear parton distribution obtained from the DGLAP equation, taking into account the energy loss of the beam proton through the nucleus, we analyse the QCD corrections to the measured Drell-Yan production cross sections for an 800 GeV proton beam incident on Be, Fe and W nuclear targets in the Glauber model. It is shown that the theoretical results are in good agreement with the FNAL E866. Finally, we compare the calculated results from the DGLAP equation with those from the latest nuclear effect models.
121335136
Design and field measurement of the BEPC-II interaction region dual-aperture quadrupoles
With the Beijing Electron Positron Collider upgrade project (BEPC-II), two dual-aperture septum-style quadrupole magnets are used in the interaction region for the final focusing of the electron and positron beams. The BEPC-II lattice design calls for the same high quality integral quadrupole field and large good field region in both apertures for each magnet. Two-dimensional contour optimization and pole-end chamfer iteration are used to minimize the systematic harmonic errors. Unexpected non-systematic errors induced by the unsymmetrical structure and the manufacturing errors are compensated with the pole-end shimming. Magnet measurements with rotating coils are performed to guide and confirm the magnet design. This paper discusses the design consideration, optimizing procedure and measurement results of these dual-aperture magnets.
40767145
Rotating Coil Magnetic Measurement System and Measurement Results of Quadrupole Prototype for BEPCII Storage Ring
A normal quadrupole prototype magnet with 266-mm long, 105-mm aperture has been designed and fabricated by IHEP. Total of 88 quadrupole magnets are under fabrication. The multipole components, magnetic field gradient and transfer function of the quadrupole magnets were measured in September 2004, using an updated measurement system, which includes a rotating coil measurement system and a Hall Probe measurement system. This paper mainly describes the updated harmonic coil magnetic field measurement system and provides the measurement results for BEPC II quadrupole magnets
123624321
J/ψ PRODUCTION IN A GLAUBER MONTE CARLO FRAMEWORK
By means of a Glauber Monte Carlo framework, the J/ψ production at RHIC energies is studied with the EKS98, EPS09 and HKN07 shadowing parameters. With a χ2 analysis of the experimental data given by PHENIX, a significant dependence of the absorption cross-section, σabs, on the J/ψ-nucleon center-of-mass energy, , is revealed with the HKN07 shadowing, but an unconspicuous dependence is shown with the EKS98 and EPS09 shadowing. In this paper, the nuclear modification factor Rd Au vs y, pT and Ncoll are also calculated and the theoretical results are in good agreement with the experimental data.
120643390
D-meson production in an AdS/CFT inspired model at the LHeC
By means of an AdS/CFT inspired model given by Kovchegov Lu and Rezaeian, the D-meson production in e + p (A) collisions at Large Hadron-electron Collider (LHeC) energies is investigated in the color-dipole formalism. The theoretical results indicate that the x-independence phenomena at very small x and Q2, which are predicted by the AdS/CFT inspired model, can be tested by the charmed quark meson production in e + p scattering at LHeC energies. Comparing with the results of the models motivated by pQCD, we also find that the theoretical results predicted by the AdS/CFT inspired model are much larger than those of the GBW and b-CGC models but smaller than that of the KT model at LHeC energies.