High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>p</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math>Tomography of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">A</mml:mi><mml:mi mathvariant="normal">u</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">A</mml:mi><mml:mi mathvariant="normal">u</mml:

Vitev, Ivan; Gyulassy, Miklós

doi:10.1103/physrevlett.89.252301

Cited by 372 publications

(454 citation statements)

References 37 publications

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“…Moliere multiple scattering). Specifically, µ 2 = 0.12 GeV 2 , λ g = (C F /C A )λ q = 1 fm and δ = 0.3 are fixed to reproduce the experimental p+A data when we include initial-state energy loss and are compatible with our earlier findings for k 2 T med within 20% [20,30]. In Eq.…”

Section: Phenomenology Of Hard Photon Production In P+a and A+a Csupporting

confidence: 77%

A systematic study of direct photon production in heavy ion collisions

Vitev

Zhang

2008

Physics Letters B

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A theoretical derivation of photon bremsstrahlung, induced by the interactions of an energetic quark in a hot and dense quark-gluon plasma, is given in the framework of the reaction operator approach. For the physically relevant case of hard jet production, followed by few in-medium interactions, we find that the Landau-Pomeranchuk-Migdal suppression of the bremsstrahlung photon intensity is much stronger than in the previously discussed limit of on-shell quarks and a large number of soft scatterings. This result is incorporated in the first systematic study of direct photon production in minimum bias d+Cu and d+Au and central Cu+Cu and Au+Au heavy ion collisions at the Relativistic Heavy Ion Collider at center of mass energies √ s = 62.4 GeV and 200 GeV. We find that the contribution of the photons created via final-state interactions is limited to 35% for 2 GeV< pT < 5 GeV and at high transverse momenta the modification of the direct photon cross section is dominated by initial-state cold nuclear matter effects.

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Section: Phenomenology Of Hard Photon Production In P+a and A+a Csupporting

confidence: 77%

A systematic study of direct photon production in heavy ion collisions

Vitev

Zhang

2008

Physics Letters B

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“…Such a result is consistent with the predicted attenuation of the parent quark and gluon jets due to energy loss in a dense QCD medium ("jet quenching") [93,94]. The dominant contribution to the energy loss is believed to be of non-Abelian radiative nature ("gluon-strahlung") as described in the GLV [95,96] and BDMPS [97][98][99][100] formalisms. In the GLV approach, the initial gluon density dN g /dy of the expanding plasma (with transverse area A ⊥ and length L) can be estimated from the measured energy loss E,…”

Section: Jets and High-p T Hadrons: Parton Number Density And Medium supporting

confidence: 82%

CMS Physics Technical Design Report: Addendum on High Density QCD with Heavy Ions

d’Enterria¹,

Ballintijn²,

Bedjidian³

et al. 2007

J. Phys. G: Nucl. Part. Phys.

150

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This report presents the capabilities of the CMS experiment to explore the rich heavy-ion physics programme offered by the CERN Large Hadron Collider (LHC). The collisions of lead nuclei at energies √ s N N = 5.5 TeV, will probe quark and gluon matter at unprecedented values of energy density. The prime goal of this research is to study the fundamental theory of the strong interaction -Quantum Chromodynamics (QCD) -in extreme conditions of temperature, density and parton momentum fraction (low-x).This report covers in detail the potential of CMS to carry out a series of representative Pb-Pb measurements. These include "bulk" observables, (charged hadron multiplicity, low p T inclusive hadron identified spectra and elliptic flow) which provide information on the collective properties of the system, as well as perturbative probes such as quarkonia, heavy-quarks, jets and high p T hadrons which yield "tomographic" information of the hottest and densest phases of the reaction.

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“…However, as shown in ref. [12], the finite GLV energy loss for jets propagating through the entire volume of the plasma quantitatively explains not only the magnitude and p T dependence of R AA (p T ) in central Au + Au but also its centrality dependence [39]. Heavy quark tomography will give an important complementary test of this physical picture.…”

Section: Discussionmentioning

confidence: 99%

“…We see that the net energy loss, ∆E (0) med + ∆E (1) ind , is found to be even smaller than in [33] due to the corrections made in Eq. (12). Also, notice that for the effective static opacity medium [36] with L in the range of 3 − 4 fm, µ ≈ 0.5 GeV and λ ≈ 1fm, the difference between the medium energy loss (∆E (0) med + ∆E (1) ind ) and naive vacuum value (∆E (0) vac ) is small, i.e.…”

Section: Heavy Quark Energy Loss At Rhicmentioning

confidence: 94%

Heavy quark radiative energy loss in QCD matter

2004

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Heavy quark medium induced radiative energy loss is derived to all orders in opacity, (L/λg) n . The analytic expression generalizes the GLV opacity expansion for massless quanta to heavy quarks with mass M in a QCD plasma with a gluon dispersion characterized by an asymptotic plasmon mass, mg = gT / √ 2. Remarkably, we find that the general result is obtained by simply shifting all frequencies in the GLV series by (m 2 g +x 2 M 2 )/(2xE). Numerical evaluation of the first order in opacity energy loss shows that both charm and bottom energy losses are much closer to the incoherent radiation limit than light partons in nuclear collisions at both RHIC and LHC energies. However, the radiation lengths of heavy quarks remain large compared to nuclear dimensions and hence high pT heavy quark production is volume rather than surface dominated.

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High-pTTomography ofd+AuandAu

Cited by 372 publications

References 37 publications

A systematic study of direct photon production in heavy ion collisions

A systematic study of direct photon production in heavy ion collisions

CMS Physics Technical Design Report: Addendum on High Density QCD with Heavy Ions

Heavy quark radiative energy loss in QCD matter

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