Theoretical developments in heavy and light flavor energy loss

Vitev, Ivan

doi:10.1088/0954-3899/35/10/104011

Cited by 28 publications

(31 citation statements)

References 33 publications

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“…Thus, recalling the basic boost relation, t h = γ h τ h = (E h /m h )τ h , the factor τ h and the factor m h in the nominator/denominator cancel each other. We therefore conclude that, within our model, the formation time of a hadron in its rest frame is proportional to its mass, τ f ∝ m H , contrary to common assumptions of a constant formation time for all hadron species, which can also be obtained from uncertainty principle considerations [1038,1010]. Hadron Attenuation at an EIC: Strong Q 2 Dependence.…”

Section: Kai Gallmeister and Ulrich Moselmentioning

confidence: 59%

“…The scaling of the hadronization times and the quark energy loss with the mass of quarks is an important question that can be used to reveal pQCD effects in parton energy loss and non perturbative effects in hadronization [1038,1039]. Many measurements to explore this at the EIC are possible, as the figures in this section illustrate.…”

Section: Raphaël Dupré and Alberto Accardimentioning

confidence: 99%

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Gluons and the quark sea at high energies: distributions, polarization, tomography

Boer¹,

Diehl²,

Milner³

et al. 2011

198

291

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ForewordThe study of the fundamental structure of nuclear matter is a central thrust of physics research in the United States. As indicated in Frontiers of Nuclear Science, the 2007 Nuclear Science Advisory Committee long range plan, consideration of a future Electron-Ion Collider (EIC) is a priority and will likely be a significant focus of discussion at the next long range plan. We are therefore pleased to have supported the ten week program in fall 2010 at the Institute of Nuclear Theory which examined at length the science case for the EIC. This program was a major effort; it attracted the maximum allowable attendance over ten weeks.This report summarizes the current understanding of the physics and articulates important open questions that can be addressed by an EIC. It converges towards a set of "golden" experiments that illustrate both the science reach and the technical demands on such a facility, and thereby establishes a firm ground from which to launch the next phase in preparation for the upcoming long range plan discussions. We thank all the participants in this productive program. In particular, we would like to acknowledge the leadership and dedication of the five co-organizers of the program who are also the co-editors of this report.David Kaplan, Director, National Institute for Nuclear Theory Hugh Montgomery, Director, Thomas Jefferson National Accelerator Facility Steven Vigdor, Associate Lab Director, Brookhaven National Laboratory iii Preface This volume is based on a ten-week program on "Gluons and the quark sea at high energies", which took place at the Institute for Nuclear Theory (INT) in Seattle from September 13 to November 19, 2010. The principal aim of the program was to develop and sharpen the science case for an Electron-Ion Collider (EIC), a facility that will be able to collide electrons and positrons with polarized protons and with light to heavy nuclei at high energies, offering unprecedented possibilities for in-depth studies of quantum chromodynamics. Guiding questions were• What are the crucial science issues?• How do they fit within the overall goals for nuclear physics?• Why can't they be addressed adequately at existing facilities?• Will they still be interesting in the 2020's, when a suitable facility might be realized?The program started with a five-day workshop on "Perturbative and Non-Perturbative Aspects of QCD at Collider Energies", which was followed by eight weeks of regular program and a concluding four-day workshop on "The Science Case for an EIC".More than 120 theorists and experimentalists took part in the program over ten weeks. It was only possible to smoothly accommodate such a large number of participants because of the extraordinary efforts of the INT staff, to whom we extend our warm thanks and appreciation. We thank the INT Director, David Kaplan, for his strong support of the program and for covering a significant portion of the costs for printing this volume. We gratefully acknowledge additional financial support provided by BNL and JLab.The program w...

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Section: Kai Gallmeister and Ulrich Moselmentioning

confidence: 59%

Section: Raphaël Dupré and Alberto Accardimentioning

confidence: 99%

Gluons and the quark sea at high energies: distributions, polarization, tomography

Boer¹,

Diehl²,

Milner³

et al. 2011

198

291

View full text Add to dashboard Cite

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“…The space-time evolution of the heavy-ion collisions at RHIC is well described by the (3+1)-dimensional relativistic hydrodynamics supplemented with the hadronic cascade after chemical freeze-out [2]. Information on the collective dynamics of QGP is obtained by the soft probes such as distributions of light hadrons at low momentum, while the information of microscopic dynamics of QGP is obtained by the hard probes such as jets, heavy quarks, and heavy quarkoniums [3].…”

Section: Introductionmentioning

confidence: 99%

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

2009

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The relativistic diffusion process of heavy quarks is formulated on the basis of the relativistic Langevin equation in Itô 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

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“…The study of these predicted modifications is therefore an important means of determining the properties of high-density QCD matter. Furthermore, multiplicity-dependent 'tomography' of Q and Q jets as a function of momentum and cone size, directly related to gluon bremsstrahlung by the heavy quarks while passing through the dense medium, will address heavy-quark energy loss [9]. While heavy quarks are expected to lose less energy than light quarks due to their larger mass, the RHIC data so far on non-photonic electron spectra suggest that this may not be the case [10].…”

Section: Introductionmentioning

confidence: 99%

Dilepton-tagged $Q\overline{Q}+\mathrm{jet}$ events at the LHC

2009

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We propose a new method for identifying and isolating QQ + jet events through semileptonic decays of the QQ pair. Employing these decay dileptons to tag the jet in a specific kinematic region provides a clean signature of jets associated with heavy-quark production. The measurement, in both pp and heavy-ion collisions, is essential for addressing heavy-quark fragmentation in vacuum and in a dense medium. We present next-to-leading order calculations of QQ production (leading order in QQ + jet production) in √ s = 14 TeV pp collisions at the LHC and discuss the feasibility of the measurement in heavy-ion collisions at √ s NN = 5.5 TeV.PACS 13.87.Ce · 24.85.+p · 25.75.Cj · 12.38.Qk

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Theoretical developments in heavy and light flavor energy loss

Cited by 28 publications

References 33 publications

Gluons and the quark sea at high energies: distributions, polarization, tomography

Gluons and the quark sea at high energies: distributions, polarization, tomography

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

Dilepton-tagged $Q\overline{Q}+\mathrm{jet}$ events at the LHC

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