Higher-order corrections to heavy-quark jet quenching

Blok, B.; Tywoniuk, Konrad

doi:10.1140/epjc/s10052-019-7061-4

Cited by 9 publications

(6 citation statements)

References 44 publications

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“…rates of the heavy and light/massless quarks are the same [8,9]. However it was found in [10,11] (see also [12][13][14][15] for related research) that the dead cone effect is actually absent, both in the harmonic oscillator (HO) approximation to the BDMPSZ approach and in the first N = 1 term in the GLV opacity expansion [16][17][18]. This observation leads to significant increase in the theoretical prediction for the heavy quark jet quenching rate.…”

Section: Introductionmentioning

confidence: 90%

Heavy quark energy loss in the quark-gluon plasma in the Moller theory

Blok

2020

Eur. Phys. J. C

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We study the energy loss of a heavy quark propagating in the quark-gluon plasma (QGP) in the framework of the Moller theory, including possible large Coulomb logarithms as a perturbation to BDMPSZ bremsstrahlung, described in the harmonic oscillator (HO) approximation. We derive the analytical expression that describes the energy loss in the entire emitted gluon frequency region. In the small frequencies region, for angles larger than the dead cone angle, the energy loss is controlled by the BDMPSZ mechanism, while for larger frequencies it is described by N = 1 term in the GLV opacity expansion. We estimate corresponding quenching rates for different values of the heavy quark path length and different m/E ratios.

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Section: Introductionmentioning

confidence: 90%

Heavy quark energy loss in the quark-gluon plasma in the Moller theory

Blok

2020

Eur. Phys. J. C

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“…This effect however was found to be in a disagreement with the experimental data that shows that quenching weights for heavy and light quark are very close up to rather small jet energies of [25][26][27][28][29][30][31][32][33][34][35] GeV [12,13]. This contradiction led to an extensive research on the heavy quark radiation in the quark gluon plasma [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 94%

Heavy Quark Radiation in the Quark-Gluon Plasma in the Moliere Theory: Angular Distribution of the Radiation

Blok

2020

Preprint

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We study the transverse momentum distribution of the gluon radiation of the heavy quark propagating in the quark gluon plasma in the framework of the Moller theory, taking into account the BDMPSZ radiation in the harmonic oscillator approximation, and the Coulomb logarithms described by the additional logarithmic terms in the effective potential. We show that these Coulomb logarithms significantly influence the BDMPS distribution, especially for the small transverse momenta, filling the dead cone, and reducing the dead cone suppression of the heavy quark radiation (dead cone effect). In addition we study the effect of the phase space constraints on the heavy quark energy loss, and argue that taking into account of both the phase space constraints and of the Coulomb gluons reduces the dependence of the heavy quark energy loss on its mass.

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“…It takes into account the additional energy loss of resolved vacuum-like emissions in the medium (see also ref. [46] for an application to heavy-quark jets). The total quenching of the jet is therefore given as a product of the quenching of the total charge of the jet and the collimator, that is…”

Section: Quenching the Whole Jetmentioning

confidence: 99%

Quenching effects in the cumulative jet spectrum

Takács

Tywoniuk

2021

J. High Energ. Phys.

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The steeply falling jet spectrum induces a bias on the medium modifications of jet observables in heavy-ion collisions. To explore this effect, we develop a novel analytic framework to study the quenched jet spectrum and its cumulative. We include many energy-loss-related effects, such as soft and hard medium induced emissions, broadening, elastic scattering, jet fragmentation, cone size dependence, and coherence effects. We show that different observables, based on the jet spectrum, are connected, e.g., the nuclear modification, spectrum shift, and the quantile procedure. We present the first predictions for the nuclear modification factor and the quantile procedure with cone size dependence. As a concrete example, we compare dijet and boson+jet events to unfold the spectrum bias effects, and improve quark-, and gluon-jet classification using arguments based on the cumulative. Besides pointing out its flexibility, finally, we apply our framework to other energy loss models such as the hybrid weak/strong-coupling approach.

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Higher-order corrections to heavy-quark jet quenching

Cited by 9 publications

References 44 publications

Heavy quark energy loss in the quark-gluon plasma in the Moller theory

Heavy quark energy loss in the quark-gluon plasma in the Moller theory

Heavy Quark Radiation in the Quark-Gluon Plasma in the Moliere Theory: Angular Distribution of the Radiation

Quenching effects in the cumulative jet spectrum

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