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Open AccessJournal ArticleDOI

Evidence of b -jet quenching in PbPb collisions at sNN =2.76TeV

S. Chatrchyan, +2189 more
- 22 Sep 2014 - 
- Vol. 113, Iss: 13, pp 132301-132301
TLDR
In this paper, the production of jets associated to bottom quarks is measured for the first time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair.
Abstract
The production of jets associated to bottom quarks is measured for the first time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair. Jet spectra are reported in the transverse momentum (pt) range of 80-250 GeV, and within pseudorapidity abs(eta < 2). The nuclear modification factor (R[AA]) calculated from these spectra shows a strong suppression in the b-jet yield in PbPb collisions relative to the yield observed in pp collisions at the same energy. The suppression persists to the largest values of pt studied, and is centrality dependent. The R[AA] is about 0.4 in the most central events, similar to previous observations for inclusive jets. This implies that jet quenching does not have a strong dependence on parton mass and flavor in the jet pt range studied.

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Citations
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Journal ArticleDOI

Measurement of jet suppression in central Pb–Pb collisions at √sNN = 2.76 TeV

Jaroslav Adam, +995 more
- 05 Feb 2015 - 
TL;DR: In this article, the transverse momentum (p(T)) spectrum and nuclear modification factor of reconstructed jets in 0-10% and 10-30% central Pb-Pb collisions at root s(NN) = 2.76 TeV were measured.
Journal ArticleDOI

Jet measurements in heavy ion physics

TL;DR: In this article, the authors reflect on what the experimental measurements have taught us so far, the limitations of the techniques used for studying jets, how the techniques can be improved, and how to move forward with the wealth of experimental data such that a complete description of energy loss in the QGP can be achieved.
Journal ArticleDOI

Experimental overview on small collision systems at the LHC

TL;DR: In this paper, the experimental results obtained in small collision systems at the LHC were presented in the special session on QGP in small systems? at the Quark Matter 2015 conference.
Journal ArticleDOI

Open Heavy Flavor in QCD Matter and in Nuclear Collisions

TL;DR: In this paper, the experimental and theoretical status of open heavy-flavor (HF) production in high-energy nuclear collisions at RHIC and LHC is reviewed, including perturbative and non-perturbative approaches in the quark-gluon plasma, effective models in hadronic matter, as well as implementations of heavy-quark hadronization.
Journal ArticleDOI

Jet Quenching from QCD Evolution

TL;DR: In this article, a soft-collinear effective theory with Glauber gluons has been proposed to give a unified description of inclusive hadron production in reactions with nucleons and heavy nuclei, based on the generalization of the DGLAP evolution equations to include final-state medium-induced parton shower corrections for large QCD processes.
References
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Journal ArticleDOI

Glauber Modeling in High Energy Nuclear Collisions

TL;DR: A brief history of the original Glauber model is presented in this article, with emphasis on its development into the purely classical, geometric picture used for present-day data analyses.
Journal ArticleDOI

Determination of jet energy calibration and transverse momentum resolution in CMS

S. Chatrchyan, +2271 more
TL;DR: In this article, the transverse momentum balance in dijet and γ/Z+jets events is used to measure the jet energy response in the CMS detector, as well as the transversal momentum resolution.
Journal ArticleDOI

A model of jet quenching in ultrarelativistic heavy ion collisionsand high- p T hadron spectra at RHIC

TL;DR: In this article, the rescattering and energy loss of hard partons in ultrarelativistic heavy ion collisions has been simulated using a Monte Carlo tool introduced to modify a standard PYTHIA jet event.
Journal ArticleDOI

Jet Flavor Tomography of Quark Gluon Plasmas at RHIC and LHC

TL;DR: A new Monte Carlo model of jet quenching in nuclear collisions, CUJET1.0, is applied to predict the jet flavor dependence of the nuclear modification factor for fragments f=π,D,B,e(-) from quenched jet flavors g,u,c,b in central collisions at RHIC and LHC.
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