High Energy Physics and Nuclear Physics -Beijing- (HIGH ENERG PHYS NUC)

Current impact factor: 0.23

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2009 Impact Factor 0.233
2008 Impact Factor 0.26
2007 Impact Factor 0.171
2006 Impact Factor 0.287
2005 Impact Factor 0.271
2004 Impact Factor 0.379
2003 Impact Factor 0.285
2002 Impact Factor 0.248
2001 Impact Factor 0.324
2000 Impact Factor 0.264

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.19
Cited half-life 4.50
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.05
Website Kao Neng Wu Li Yu Ho Wu Li / High Energy Physics and Nuclear Physics website
ISSN 0254-3052

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We present the Λ̄-hyperon global polarization in Au+Au collisions at √sNN = 62GeV and 200GeV measured with the STAR detector at RHIC. The observed Λ̄-hyperon global polarization is consistent with zero, what is in agreement with recent measurements of Λ global polarization, as well as φ(1020) and K*0(892) vector mesons spin alignment with respect to the reaction plane. The possible dependence of the global polarization on relative azimuthal angle between the orbital momentum of the system and the hyperon 3-momentum is discussed. The corresponding systematic uncertainty due to detector acceptance is found to be less than 20%.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: A study of Mach shocks generated by fast partonic jets propagating through the quark-gluon plasma (QGP) is reviewed briefly. We predict a significant deformation of Mach shocks in central Au+Au collisions at RHIC and LHC energies compared to those created by a jet propagation through a static medium. Moreover, a new hydrodynamical study of jet energy loss is presented.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: There exists a large local relative orbital angular momentum between produced partons along the direction opposite to the reaction plane in the early stage of non-central heavy-ion collisions. This initial local orbital angular momentum can lead to quark polarization along the same direction due to spin-orbital coupling in QCD. We present the quark polarization by using hard thermal loop gluon propagator for quark-quark scattering in quark-gluon plasma and compare it with the result obtained from the static potential model.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: Recent measurements of event-by-event elliptic flow in Au+Au collisions at √sNN = 200GeV exhibit large relative fluctuations of about 40%-50%. The data are well described by fluctuations in the shape of the initial collision region, as estimated event-by-event with the participant eccentricity using Glauber Monte Carlo. These results, combined with the demonstrated participant eccentricity scaling of the elliptic flow across nuclear species, constitute evidence of transverse granularity in the initial matter production in these collisions.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: The neutron-rich nucleus 11Li is separated by the radioactive ion beam line RIBLL at HIRFL from the breakup of 50MeV/u 13C on Be target. The total reaction cross sections for 11Li at energies range from 25 to 45MeV/u on Si target have been measured by using the transmission method. The experimental data at high and low energies can be fitted well by Glauber model using two Gauss density distribution. The matter radius of 11Li was also deduced.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: Integrated two particle correlation functions have been extracted from charge particle multiplicity density fluctuations in pseudorapidity space by analyzing Au+Au collision events at root s(NN) = 200GeV taken by RHIC-PHENIX. The correlation lengths as a function of the number of participants N-p indicate a non monotonic increase at around Np = 100 and the corresponding energy density based on the Bjorken picture is epsilon(Bj) iota similar to 2.5GeV center dot fM(-2). This could be a symptom of a critical behavior.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: The dark current, charge collection efficiency and time response properties of CVD diamond film detectors are studied based on experiments and their theoretic analysis. The results shows: No PN or PIN junctions are needed when preparing diamond detectors; charge collection efficiency of the detector will be reduced by defects in film, and it increases and reaches saturation along with the increasing electric field between the two electrodes. The charge collection time of our diamond film detector is about 719ps, and the charge collection efficiency can reach the saturation value of 60.5% under the electric field of 2.5V/μm. Scattering of the lattice may slow the detector response, so it's necessary to improve CVD technology and choose diamond film with big grain size.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: Based on the improved nuclear density model and the condition of the nuclear momentum conservation, we derived the formula of the nuclear effect parameter formula for the nuclear gluon distribution function, in which our established connection between the nuclear density and the mean binding energy in nucleus is used. By using the formula, we can well explain the experimental data of the J/ψ photoproduction in the 1-A process.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: According to the operation and development of radiation therapy in the world, in order to further promote the radiation therapy of tumour in China, a design of a special synchrotron with two super-periodicity for hadron therapy is presented, including lattice, injection system, RF acceleration and slow extraction of the third order resonance. The synchrotron accelerates the proton beam to 250MeV and the carbon beam to 400MeV/u.
    No preview · Article · Dec 2007 · High Energy Physics and Nuclear Physics -Beijing-
  • Source
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    ABSTRACT: The performances of monitored drift tube chambers for the ATLAS experiment are studied with cosmic rays. The main features of the chamber and the test facilities are described briefly. The criteria and test procedures for the BEE chambers are presented, including the dark current, the noise level, the drift time spectra, the charge distribution and the relative efficiency. The results are within the specifications required by ATLAS.
    Preview · Article · Nov 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: We study the polarization effects of the top-quark on the tt̄ production cross sections at hadron colliders in the topcolor-assisted technicolor model. The MHS set A′ parton distributions and the helicity projection operators methods are used in the calculation. It is shown that the polarization effects of the top quark are too small to produce enough identified signals at the Tevatron while they can be large enough to be detected at the LHC with reasonable values of the parameters. The polarization effects at the LHC can reach 16%, therefore, they provide feasible tests of the topcolor-assisted technicolor model.
    No preview · Article · Nov 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: The response of three semiconductor materials, polycrystalline HgI 2, amorphous Se and polycrystalline CdTe, used for large area direct conversion detectors, is simulated by Monte Carlo method for X-ray photons in the diagnostic energy range (10-100keV). The simulation involves the transmission spectra, backscatting spectra, absorption efficiency and charge sensitivity. The interaction process between X-ray photons and the conversion materials is simulated by EGSnrc Monte Carlo code system and for the generation of signal charges Gaussian noise and the collection of partial charges are taken into account. The results show that deep traps in materials can affect largely detecting sensitivity when the mean free length (Schubweg) of carriers is less than the materials thickness. The sensitivity of HgI2 is 5 times higher than that of amorphous Se and CdTe is 10 times higher than amorphous Se, it can be seen that a high Z material can improve the detecting sensitivity greatly.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: Small-angle multiple intrabeam scattering (IBS) is an important effect for heavy-ion storage rings with electron cooling, because the cooling time is determined by the equilibrium between cooling and IBS process. All usually used numerical algorithms of IBS growth rate calculations are based on the model of the collisions proposed by A.Piwinski, but this result is a multidimensional integral. In this paper, the IBS growth rates are simulated for HIRFL-CSR using symmetric elliptic integral method, and compared with several available IBS code results.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: GEM, which has rapidly been developed in recent years as a new type of gas detector, has advantages of high position resolution and counting rate with a wide potential application in particle physics and X-ray imaging and etc. One of the key techniques of GEM's development is the structure fabrication of the PI film for the detector, which is difficult to be done by the lithography process. In this paper we present the structure fabrication process of GEM's PI film, and the result of our work about it. We chose wet-etching and dry-etching to make the structure holes of PI film, and find that wet-etching is better way to get perfect holes of GEM's PI film for future application with acceptable price. The successful fabrication of GEM's film structures is helpful to develop the domestic research of GEM detector. The performance of the GEM detector with such PI film still need more detail study.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: We have investigated the performance of a EXOGAM-Segmented-Clover with 16 segments as a Compton Polarimeter to measure the linear polarization of gamma rays. The polarization sensitivity of the Clover detector has been measured at the energy of 1332keV through the coincidence measurements of cascade gamma-rays from 60Co. Experimental values were in good accord with our expectation.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: The 3-jet events are produced by Monte Carlo simulation Jetset7.4 in e +e- collisions at √s = 91.2GeV. After introducing the cone angle of jets, we carefully studied the characters of the angular distributions of quark jets and gluon jets with different flavors. It turns out that the ranges of angular distributions of gluon jets are obviously wider than that of quark jets at the same energies. The average cone angles of gluon jets are much larger than that of quark jets for the same charged particle multiplicity or the same transverse momentum. There are linear relations in the distributions of the average cone angles of jets as functions of the charged multiplicity and the transverse momentum. The angular distribution properties of gluon jets produced by quarks with different flavors are the same, while there are obvious differences among the distributions of cone angles for quark jets of different flavors.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-
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    ABSTRACT: By including the scalar isovector meson δ, we extend the relativistic mean field model and the one-boson exchange model of changing K-meson in the framework of Schaffner's relativistic mean field model. We re-consider the coupling constants for the interactions between the meson and the baryon and the interactions of the K meson with different mesons as well in various parameter sets. Using our model, we discuss the effective masses of K mesons in the hyperon-rich nuclear matter. We find that the density modification of the K meson mass in the strange nuclear matter is smaller than that in the pure nuclear matter. The influence of the scalar isovector meson δ on the effective mass of kaon is rather evident. But the extent of the influence is different in different parameter sets.
    No preview · Article · Oct 2007 · High Energy Physics and Nuclear Physics -Beijing-