作者机构：
Argonne Natl Lab, Argonne, IL 60439 USA.;Univ Bern, CH-3012 Bern, Switzerland.;Univ Birmingham, Birmingham B15 2TT, W Midlands, England.;Brookhaven Natl Lab, Upton, NY 11973 USA.;CALTECH, Pasadena, CA 91125 USA.
通讯机构：
[Trainor, TA] A;Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
关键词：
Hadronization;Heavy ion collisions;Net-charge correlations;Net-charge fluctuations
摘要：
We present the first measurements of charge-dependent correlations on angular difference variables eta(1) - eta(2) (pseudorapidity) and phi(1) - phi(2) (azimuth) for primary charged hadrons with transverse momentum 0.15 <= p(t) <= 2 GeV/c and vertical bar eta vertical bar <= 1.3 from Au-Au collisions at root(s)NN = 130 GeV. We observe correlation structures not predicted by theory but consistent with evolution of hadron emission geometry with increasing centrality from one-dimensional fragmentation of color strings along the beam direction to an at least two-dimensional hadronization geometry along the beam and azimuth directions of a hadron-opaque bulk medium. (c) 2006 Elsevier B.V. All rights reserved.
作者：
Abelev, B. I.*;Aggarwal, M. M.;Ahammed, Z.;Amonett, J.;Anderson, B. D.;...
期刊：
PHYSICAL REVIEW C,2006年74(5) ISSN：2469-9985
通讯作者：
Abelev, B. I.
作者机构：
[Abelev, B. I.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.;Univ Birmingham, Birmingham, W Midlands, England.;Brookhaven Natl Lab, Upton, NY 11973 USA.;CALTECH, Pasadena, CA 91125 USA.;Univ Calif Berkeley, Berkeley, CA 94720 USA.
通讯机构：
[Abelev, B. I.] A;Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
摘要：
We present the first statistically meaningful results from two-K-s(0) interferometry in heavy-ion collisions at root s(NN)=200 GeV. A model that takes the effect of the strong interaction into account has been used to fit the measured correlation function. The effects of single and coupled channels were explored. At the mean transverse mass < m(T)>=1.07 GeV, we obtain the values R=4.09 +/- 0.46(stat)+/- 0.31(sys) fm and lambda=0.92 +/- 0.23(stat)+/- 0.13(sys), where R and lambda are the invariant radius and chaoticity parameters, respectively. The results are qualitatively consistent with m(T) systematics established with pions in a scenario characterized by a strong collective flow.
期刊：
Journal of High Energy Physics,2006年2006(3):4911-4921 ISSN：1029-8479
通讯作者：
Wu, SQ
作者机构：
[Wu, SQ; Jiang, QQ] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Wu, SQ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Hubei, Peoples R China.
关键词：
classical theories of gravity;black holes;black holes in string theory
摘要：
Hawking radiation viewed as a semiclassical tunneling process from the event horizon of the (2 + 1)-dimensional rotating BTZ black hole is carefully reexamined by taking into account not only the energy conservation but also the conservation of angular momentum when the effect of the emitted particle's self-gravitation is incorporated. In contrast to previous analysis of this issue in the literature, our result obtained here fits well to the Parikh-Wilczek's universal conclusion without any modification to the Bekenstein-Hawking area-entropy formulae of the BTZ black hole.
作者机构：
[Liu Lianshou; Yu Meiling; Du Jiaxin] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Yu Meiling] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
The hadronization scheme for parton transport in relativistic heavy ion collisions is considered in detail. It is pointed out that the traditional scheme for particles being freezed out one by one leads to serious problem on unreasonable long lifetime of partons. A collective phase transition following a supercooling is implemented in a simple way. It turns out that the modified model with a sudden phase transition is able to reproduce the experimental longitudinal distributions of final state particles better than the original one does. The encouraging results indicate that equilibrium phase transition should be taken into proper account in parton transport models for relativistic heavy ion collisions.
作者：
J. L. Noronha*;H-c. Ren;I. Giannakis;D. Hou;D. H. Rischke
期刊：
Acta Physica Hungarica, Series A: Heavy Ion Physics,2006年27(2-3):311-314 ISSN：1219-7580
通讯作者：
J. L. Noronha
作者机构：
[J. L. Noronha] Frankfurt Institute for Advanced Studies, J.W. Goethe-Universität, Frankfurt am Main, Germany;[I. Giannakis] Physics Department, The Rockefeller University, New York, USA;[D. Hou] Institute of Particle Physics, Huazhong Normal University, Wuhan, China;Institut für Theoretische Physik, J.W. Goethe-Universität, Frankfurt am Main, Germany;[H-c. Ren] Physics Department, The Rockefeller University, New York, USA<&wdkj&>Institute of Particle Physics, Huazhong Normal University, Wuhan, China
通讯机构：
[J. L. Noronha] F;Frankfurt Institute for Advanced Studies, J.W. Goethe-Universität, Frankfurt am Main, Germany
关键词：
color superconductivity;phase transitions
摘要：
Type-I color superconductors display a first-order phase transition due to thermal gauge-field fluctuations. We numerically evaluated the critical temperature of the first-order phase transition and the corresponding discontinuity of the diquark condensate at the critical point.
作者机构：
[Guo, Hong] Huazhong Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom, Wuhan 430071, Peoples R China.;Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Peoples R China.
通讯机构：
[Guo, Hong] H;Huazhong Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
摘要：
We investigated theoretically the emission spectrum for a harmonically trapped two-level atom; our study is not limited in Lamb-Dicke approximation. We have shown that the effects of the atomic motion on the emission spectrum are dependent on the initial state of the system, the Lamb-Dicke parameter η, and the detuning parameter.
作者机构：
[Yang, CB; Tan, ZG] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Tan, ZG] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
关键词：
INELASTIC EP SCATTERING;FRAGMENTATION FUNCTIONS;PERTURBATION-THEORY
摘要：
The evolution of shower parton distributions in a jet is investigated in the framework of a quark recombination model. The distributions are parameterized and the Q^2 dependence of the parameters is given by polynomials of In Q^2 for a wide range of Q^2
