Heavy quark diffusion with relativistic Langevin dynamics in the quark-gluon fluid

被引：94

作者：

Akamatsu, Yukinao ^{[1
]}

Hatsuda, Tetsuo ^{[1
]}

Hirano, Tetsufumi ^{[1
]}

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW C | 2009年 / 79卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.79.054907

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The relativistic diffusion process of heavy quarks is formulated on the basis of the relativistic Langevin equation in Ito discretization scheme. The drag force inside the quark-gluon plasma (QGP) is parametrized according to the formula for the strongly coupled plasma obtained by the anti-de-Sitter space/conformal field theory (AdS/CFT) correspondence. The diffusion dynamics of charm and bottom quarks in QGP is described by combining the Langevin simulation under the background matter described by the relativistic hydrodynamics. Theoretical calculations of the nuclear modification factor R-AA and the elliptic flow v(2) for the single electrons from the charm and bottom decays are compared with the experimental data from the relativistic heavy-ion collisions. The R-AA for electrons with large transverse momentum (p(T)>3 GeV) indicates that the drag force from the QGP is as strong as the AdS/CFT prediction.

引用

页数：11

共 41 条

[1] Transverse momentum and centrality dependence of High-pT nonphotonic electron suppression in Au plus Au collisions at √SNN=200 GeV [J].

Abelev, B. I. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Anderson, B. D. ;

Arkhipkin, D. ;

Averichev, G. S. ;

Bai, Y. ;

Balewski, J. ;

Barannikova, O. ;

Barnby, L. S. ;

Baudot, J. ;

Baumgart, S. ;

Belaga, V. V. ;

Bellingeri-Laurikainen, A. ;

Bellwied, R. ;

Benedosso, F. ;

Betts, R. R. ;

Bhardwaj, S. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Blyth, S-L. ;

Bombara, M. ;

Bonner, B. E. ;

Botje, M. ;

Bouchet, J. ;

Brandin, A. V. ;

Bravar, A. ;

Burton, T. P. ;

Bystersky, M. ;

Cadman, R. V. ;

Cai, X. Z. ;

Caines, H. ;

de la Barca Sanchez, M. Calderon ;

Callner, J. ;

Catu, O. ;

Cebra, D. ;

Chajecki, Z. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Christie, W. .

PHYSICAL REVIEW LETTERS, 2007, 98 (19)

[2] Measurement of High-pT single electrons from heavy-flavor decays in p plus p collisions at √s=200 GeV [J].

Adare, A. ;

Afanasiev, S. ;

Aidala, C. ;

Ajitanand, N. N. ;

Akiba, Y. ;

Al-Bataineh, H. ;

Alexander, J. ;

Aoki, K. ;

Aphecetche, L. ;

Armendariz, R. ;

Aronson, S. H. ;

Asai, J. ;

Atomssa, E. T. ;

Averbeck, R. ;

Awes, T. C. ;

Azmoun, B. ;

Babintsev, V. ;

Baksay, G. ;

Baksay, L. ;

Baldisseri, A. ;

Barish, K. N. ;

Barnes, P. D. ;

Bassalleck, B. ;

Bathe, S. ;

Batsouli, S. ;

Baublis, V. ;

Bazilevsky, A. ;

Belikov, S. ;

Bennet, R. ;

Berdnikov, Y. ;

Bickley, A. A. ;

Boissevain, J. G. ;

Borel, H. ;

Boyle, K. ;

Brooks, M. L. ;

Buesching, H. ;

Bumazhnov, V. ;

Bunce, G. ;

Butsyk, S. ;

Campbell, S. ;

Chang, B. S. ;

Charvet, J. L. ;

Chernichenko, S. ;

Chiba, J. ;

Chi, C. Y. ;

Chiu, M. ;

Choi, I. J. ;

Chujo, T. ;

Chung, P. ;

Churyn, A. .

PHYSICAL REVIEW LETTERS, 2006, 97 (25)

[3] Energy loss and flow of heavy quarks in Au+Au collisions at √sNN = 200 GeV [J].

Adare, A. ;

Afanasiev, S. ;

Aidala, C. ;

Ajitanand, N. N. ;

Akiba, Y. ;

Al-Bataineh, H. ;

Alexander, J. ;

Al-Jamel, A. ;

Aoki, K. ;

Aphecetche, L. ;

Armendariz, R. ;

Aronson, S. H. ;

Asai, J. ;

Atomssa, E. T. ;

Averbeck, R. ;

Awes, T. C. ;

Azmoun, B. ;

Babintsev, V. ;

Baksay, G. ;

Baksay, L. ;

Baldisseri, A. ;

Barish, K. N. ;

Barnes, P. D. ;

Bassalleck, B. ;

Bathe, S. ;

Batsouli, S. ;

Baublis, V. ;

Bauer, F. ;

Bazilevsky, A. ;

Belikov, S. ;

Bennett, R. ;

Berdnikov, Y. ;

Bickley, A. A. ;

Bjorndal, M. T. ;

Boissevain, J. G. ;

Borel, H. ;

Boyle, K. ;

Brooks, M. L. ;

Brown, D. S. ;

Bucher, D. ;

Buesching, H. ;

Bumazhnov, V. ;

Bunce, G. ;

Burward-Hoy, J. M. ;

Butsyk, S. ;

Campbell, S. ;

Chai, J.-S. ;

Chang, B. S. ;

Charvet, J.-L. ;

Chernichenko, S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (17)

[4] The order of the quantum chromodynamics transition predicted by the standard model of particle physics [J].

Aoki, Y. ;

Endrodi, G. ;

Fodor, Z. ;

Katz, S. D. ;

Szabo, K. K. .

NATURE, 2006, 443 (7112) :675-678

[5] How sensitive are high-pT electron spectra at RHIC to heavy quark energy loss? [J].

Armesto, Nestor ;

Cacciari, Matteo ;

Dainese, Andrea ;

Salgado, Carlos A. ;

Wiedemann, Urs Achim .

PHYSICS LETTERS B, 2006, 637 (06) :342-346

[6] Langevin equations with multiplicative noise: Resolution of time discretization ambiguities for equilibrium systems [J].

Arnold, P .

PHYSICAL REVIEW E, 2000, 61 (06) :6091-6098

[7] HIGHLY RELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS - THE CENTRAL RAPIDITY REGION [J].

BJORKEN, JD .

PHYSICAL REVIEW D, 1983, 27 (01) :140-151

[8] QCD predictions for charm and bottom quark production at RHIC [J].

Cacciari, M ;

Nason, P ;

Vogt, R .

PHYSICAL REVIEW LETTERS, 2005, 95 (12)

[9] Heavy quark diffusion in QCD and N=4 SYM at next-to-leading order [J].

Caron-Huot, Simon ;

Moore, Guy D. .

JOURNAL OF HIGH ENERGY PHYSICS, 2008, (02)

[10] Heavy quark diffusion in perturbative QCD at next-to-leading order [J].

Caron-Huot, Simon ;

Moore, Guy D. .

PHYSICAL REVIEW LETTERS, 2008, 100 (05)

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