Effect of heavy-quark energy loss on the muon differential production cross section in Pb-Pb collisions at \sqrtsNN=5.5 TeV

Abstract

We study the nuclear modification factors RAA and RCP of the high transverse momentum 5<pt<60 GeV/c distribution of muons in Pb--Pb collisions at LHC energies. We consider two pseudo-rapidity ranges covered by the LHC experiments: $|\eta |<2.5$ and $2.5<\eta <4$. Muons from semi-leptonic decays of heavy quarks (c and b) and from leptonic decays of weak gauge bosons (W and Z) are the main contributions to the muon pt distribution above a few GeV/c. We compute the heavy quark contributions using available pQCD-based programs. We include the nuclear shadowing modification of the parton distribution functions and the in-medium radiative energy loss for heavy quarks, using the mass-dependent BDMPS quenching weights. Muons from W and Z leptonic decays, that dominate the yield at high pt, can be used as a medium-blind reference to observe the medium-induced suppression of beauty quarks.

References in corpus (28)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Radiative energy loss of high energy quarks and gluons in a finite volume quark-gluon plasma
• High-precision QCD at hadron colliders: electroweak gauge boson rapidity distributions at NNLO
• Improved Parton Distributions from Global Analysis of Recent Deep Inelastic Scattering and Inclusive Jet Data
• Erratum: Transverse momentum and centrality dependence of high-\pt\ non-photonic electron suppression in Au+Au collisions at \sqrtsNN\ = 200 GeV
• Heavy-Quark Probes of the Quark-Gluon Plasma at RHIC
• Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
• Heavy-Quark Kinetics in the QGP at LHC
• Thermal Dileptons at LHC
• Nuclear parton distributions at next to leading order
• Heavy Ion Collisions at the LHC - Last Call for Predictions
• Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss in Au+Au Collisions at sqrt(s_NN)=200 GeV
• Leading-particle suppression in high energy nucleus-nucleus collisions
• The Fragility of High-pT Hadron Spectra as a Hard Probe
• Color Glass Condensate at the LHC: hadron multiplicities in $pp$, $pA$ and $AA$ collisions
• Testing the Color Charge and Mass Dependence of Parton Energy Loss with Heavy-to-light Ratios at RHIC and LHC
• A Dynamical Scaling Law for Jet Tomography
• Collisional dissociation of heavy mesons in dense QCD matter
• How sensitive are high-pt electron spectra at RHIC to heavy quark energy loss?
• W Production in an Improved Parton-Shower Approach
• Heavy quark jet quenching with collisional plus radiative energy loss and path length fluctuations
• Jet-quenching in a 3D hydrodynamic medium
• Shadowing Effects on Vector Boson Production
• Higgs Production: A Comparison of Parton Showers and Resummation
• How accurately can we measure the W cross section?
• Electroweak boson detection in the ALICE muon spectrometer
• Studying the energy loss of heavy quarks via single muon production in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$=5.5 TeV

Cited by in corpus (9)

• Study of W boson production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
• Study of W boson production in pPb collisions at sqrt(s[NN]) = 5.02 TeV
• Observation of nuclear modifications in W${}^{\pm }$ boson production in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 8.16 TeV
• Heavy-flavour production in Pb-Pb collisions at the LHC, measured with the ALICE detector
• Productions of $Z^0$ and $W^{+}/W^{-}$ in Relativistic Heavy-Ion Collisions at the LHC
• Vector bosons in heavy-ion collisions at the LHC
• Probing Shadowed Nuclear Sea with Massive Gauge Bosons in the Future Heavy-Ion Collisions
• Preparation for heavy-flavour measurements with ALICE at the LHC
• Z0 Boson Measurement with the ALICE Central Barrel in pp collisions at 14 TeV