Shining a gluon beam through quark-gluon plasma

Chesler, Paul M.; Ho, Ying-Yu; Rajagopal, Krishna

doi:10.1103/physrevd.85.126006

Cited by 27 publications

(46 citation statements)

References 75 publications

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“…The conclusion that we reach is consistent with conclusions (also qualitative) reached by analyzing the quenching of a beam of gluons by strongly coupled N ¼ 4 SYM plasma [12]. In a different sense, weak-coupling analyses of the quenching of a high energy parton by a slab of weakly coupled plasma at some constant T (see Ref.…”

Section: Introduction and Conclusionsupporting

confidence: 90%

Jet quenching in strongly coupled plasma

2014

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We present calculations in which an energetic light quark shoots through a finite slab of strongly coupled N ¼ 4 supersymmetric Yang-Mills (SYM) plasma, with thickness L, focusing on what comes out on the other side. We find that even when the "jets" that emerge from the plasma have lost a substantial fraction of their energy they look in almost all respects like "jets" in vacuum with the same reduced energy. The one possible exception is that the opening angle of the "jet" is larger after passage through the slab of plasma than before. Along the way, we obtain a fully geometric characterization of energy loss in the strongly coupled plasma and, where E out is the energy of the "jet" that emerges from the slab of plasma and x stop is the (previously known) stopping distance for the light quark in an infinite volume of plasma.

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Section: Introduction and Conclusionsupporting

confidence: 90%

Jet quenching in strongly coupled plasma

2014

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“…Similar quenching was also observed in isolated photon+jet pairs [15]. While these results constrain the mechanism of parton energy loss [17,18], further understanding requires the measurement of the p T dependence of the observed effects. The goal of this analysis is to characterize possible modifications of dijet event properties as a function of centrality and leading jet transverse momentum in PbPb collisions.…”

Section: Introductionsupporting

confidence: 72%

Dijet imbalance in 2.76 TeV PbPb collisions in CMS

Salur

2012

J. Phys.: Conf. Ser.

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We present the measurement of dijet production in PbPb collisions at a nucleon-nucleon center-ofmass energy of 2.76 TeV that is studied with the CMS detector at the LHC. We use data corresponding to an integrated luminosity of 150 µb −1 . Jets are reconstructed using the anti-k T algorithm on particle flow objects. The dijet momentum balance and angular correlations are studied as a function of collision centrality and leading jet momentum. For the most peripheral PbPb collisions, good agreement of the dijet momentum balance distributions with pp data and reference calculations at the same collision energy is found. However, more central collisions show a strong imbalance of leading and subleading jet transverse momenta, confirming the previous observations made using a smaller dataset. The extended jet transverse momentum range significantly increases the discriminatory power of the measurement for different models of parton energy loss in hot QCD matter. Abstract. We present the measurement of dijet production in PbPb collisions at a nucleonnucleon center-of-mass energy of 2.76 TeV that is studied with the CMS detector at the LHC. We use data corresponding to an integrated luminosity of 150 µb −1 . Jets are reconstructed using the anti-kT algorithm on particle flow objects. The dijet momentum balance and angular correlations are studied as a function of collision centrality and leading jet momentum. For the most peripheral PbPb collisions, good agreement of the dijet momentum balance distributions with pp data and reference calculations at the same collision energy is found. However, more central collisions show a strong imbalance of leading and subleading jet transverse momenta, confirming the previous observations made using a smaller dataset. The extended jet transverse momentum range significantly increases the discriminatory power of the measurement for different models of parton energy loss in hot QCD matter.

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“…There is a minimum possible initial opening angle, corresponding to the maximum possible x stop for jets with a given initial energy [145] that was computed holographically in refs. [131,137,141] and is given by…”

Section: Jhep03(2017)135mentioning

confidence: 99%

Angular structure of jet quenching within a hybrid strong/weak coupling model

Casalderrey-Solana

Gulhan

Milhano

et al. 2017

J. High Energ. Phys.

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Within the context of a hybrid strong/weak coupling model of jet quenching, we study the modification of the angular distribution of the energy within jets in heavy ion collisions, as partons within jet showers lose energy and get kicked as they traverse the strongly coupled plasma produced in the collision. To describe the dynamics transverse to the jet axis, we add the effects of transverse momentum broadening into our hybrid construction, introducing a parameter K ≡q/T 3 that governs its magnitude. We show that, because of the quenching of the energy of partons within a jet, even when K = 0 the jets that survive with some specified energy in the final state are narrower than jets with that energy in proton-proton collisions. For this reason, many standard observables are rather insensitive to K. We propose a new differential jet shape ratio observable in which the effects of transverse momentum broadening are apparent. We also analyze the response of the medium to the passage of the jet through it, noting that the momentum

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Shining a gluon beam through quark-gluon plasma

Cited by 27 publications

References 75 publications

Jet quenching in strongly coupled plasma

Jet quenching in strongly coupled plasma

Dijet imbalance in 2.76 TeV PbPb collisions in CMS

Angular structure of jet quenching within a hybrid strong/weak coupling model

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