Heavy-to-light ratios as a test of medium-induced energy loss at RHIC and the LHC N. Armesto Quark Matter 2005: 18th International Conference on Ultra-Relativistic.

Slides:

Advertisements

Similar presentations

Heavy flavor production in STAR. What can charm and beauty tell us about matter in heavy ion collisions? Manuel Calderón de la Barca Sánchez UC Davis for.

Advertisements

1 Dihadron Tomography of High Energy AA Collisions in NLO pQCD Hanzhong Zhang Department of Physics, Shandong University Institute of Particle Physics,

Aug , 2005, XXXV ISMD, Czech X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC  Introduction.

Future Prospects in QCD BNL, July 17-22, Jets and Heavy Flavors Jet and Heavy Flavor Probes of Hot QCD Matter Peter Jacobs, LBNL.

Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurements by Weak-Decayed Electrons at RHIC-PHENIX.

Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.

Probing Properties of the QCD Medium via Heavy Quark Induced Hadron Correlations Huan Zhong Huang Department of Physics and Astronomy University of California.

Jet-like correlations of heavy-flavor particles - From RHIC to LHC

M. Djordjevic 1 Open questions in heavy flavor physics at RHIC Magdalena Djordjevic The Ohio State University.

M. Djordjevic 1 Heavy quark energy loss puzzle at RHIC Magdalena Djordjevic The Ohio State University.

Winter Workshop on Nuclear Dynamics – San Diego, 16 Mar. 2006John Harris (Yale) Suppression of Non-photonic Electrons at High Pt John W. Harris Yale University.

High-p T spectra and correlations from Cu+Cu and Au+Au collisions in STAR Marco van Leeuwen, LBNL for the STAR collaboration.

Rare particle production 1. strangeness 2. open charm 3. quarkonia.

Dunlop, WW What More Can Be Learned from High Pt Probes at RHIC? James Dunlop Brookhaven National Laboratory.

PQCD A.) pQCD components in elementary collisions B.) modification in AA collisions.

Luan Cheng (Institute of Particle Physics, Huazhong Normal University) I. Introduction II. Interaction Potential with Flow III. Flow Effects on Light Quark.

Single & Dihadron Suppression at RHIC and LHC Xin-Nian Wang Lawrence Berkeley National Laboratory Last call for prediction for LHC, CERN, May 29-June 2,2007.

LHC Predictions Workshop, CERN, Andrea Dainese 1 R AA and R CP of single muons from heavy quark and vector boson decays at the LHC Z.Conesa.

Honnef, Honnef, 27/06/08 1 Consequences of a  c /D enhancement effect.

1 Hadron multiplicities, p T -spectra and net-baryon number in central Pb+Pb collisions at the LHC Kari J. Eskola, Department of Physics, University of.

1 The Study of D and B Meson Semi- leptonic Decay Contributions to the Non-photonic Electrons Xiaoyan Lin CCNU, China/UCLA for the STAR Collaboration 22.

Rapidity correlations in the CGC N. Armesto ECT* Workshop on High Energy QCD: from RHIC to LHC Trento, January 9th 2007 Néstor Armesto Departamento de.

A NLO Analysis on Fragility of Dihadron Tomography in High Energy AA Collisions I.Introduction II.Numerical analysis on single hadron and dihadron production.

Identified Particle Ratios at large p T in Au+Au collisions at  s NN = 200 GeV Matthew A. C. Lamont for the STAR Collaboration - Talk Outline - Physics.

Single Electron Measurements at RHIC-PHENIX T. Hachiya Hiroshima University For the PHENIX Collaboration.

Aug. 4-9, 2005, QM2005, Budapest X.Dong, USTC 1 Open charm production at RHIC Xin Dong University of Science and Technology of China - USTC.

11/1/06William Horowitz 1 Jet Quenching at RHIC and the LHC William Horowitz Columbia University November 1, 2006 With many thanks to Simon Wicks, Azfar.

Open charm hadron production via hadronic decays at STAR

Heavy flavor production at RHIC Yonsei Univ. Y. Kwon.

11/1/2007Heavy Quark Workshop, Berkeley1 The Quenching of Beauty Last Hope for a Grey Probe of the QGP James Dunlop Brookhaven National Laboratory.

Jet energy loss at RHIC and LHC including collisional and radiative and geometric fluctuations Simon Wicks, QM2006 Work done with Miklos Gyulassy, William.

1 A NLO Analysis on Fragility of Dihadron Tomography in High-Energy Nuclear Collisions Enke Wang Institute of Particle Physics, Central China Normal University.

Recent Charm Measurements through Hadronic Decay Channels with STAR at RHIC in 200 GeV Cu+Cu Collisions Stephen Baumgart for the STAR Collaboration, Yale.

Jet Physics in ALICE Mercedes López Noriega - CERN for the ALICE Collaboration Hot Quarks 2006 Villasimius, Sardinia - Italy.

M. Djordjevic 1 Theoretical predictions of jet suppression: a systematic comparison with RHIC and LHC data Magdalena Djordjevic Institute of Physics Belgrade,

NEUTRAL MESON PRODUCTION IN PP AND PB-PB COLLISIONS AT LHC Dmitry Blau, for the ALICE collaboration NRC “Kurchatov Institute” LHC on the March

STAR Modification of high-p T hadro-chemistry in Au+Au collisions relative to p+p Anthony Timmins for the STAR Collaboration 31st July 2009 Heavy-ion III.

Francesco Noferini Bologna University Erice, Italy 31 st August 2006 Two-particle correlations: from RHIC to LHC.

Testing radiative energy loss at RHIC and the LHC N. Armesto Fifth International Conference on PERSPECTIVES IN HADRONIC PHYSICS: Particle-Nucleus and Nucleus-Nucleus.

Flow effects on jet profile N. Armesto 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions Asilomar Conference.

Probing the properties of dense partonic matter at RHIC Y. Akiba (RIKEN) for PHENIX collaboration.

1 Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurement by Single Electrons in the PHENIX Experiment.

Study of b quark contributions to non-photonic electron yields by azimuthal angular correlations between non-photonic electrons and hadrons Shingo Sakai.

Parton energy loss Marco van Leeuwen. 2 Hard probes of QCD matter Use ‘quasi-free’ partons from hard scatterings to probe ‘quasi-thermal’ QCD matter Interactions.

Ralf Averbeck, Stony Brook University XXXX th Rencontres de Moriond La Thuile, Italy, March 12-19, 2005 The Charm (and Beauty) of RHIC l Heavy flavor in.

1 Measurement of Heavy Quark production at RHIC-PHENIX Yuhei Morino CNS, University of Tokyo.

Quark Matter 2005, Budapest Xin-Nian Wang Lawrence Berkeley National Laboratory Jet and Leading Hadron Production.

What Can We Learn from Charm Production at RHIC? James Nagle University of Colorado at Boulder c _c_c.

Diagnosing energy loss: PHENIX results on high-p T hadron spectra Baldo Sahlmüller, University of Münster for the PHENIX collaboration.

Heavy Quark Energy Loss with Twist Expansion Approach Ben-Wei Zhang Institute of Particle Physics Central China Normal Univeristy CCAST, Beijing --- Augest.

Elastic, Inelastic and Path Length Fluctuations in Jet Tomography Simon Wicks Hard Probes 2006 Work done with William Horowitz, Magdalena Djordjevic and.

Hard Processes in Heavy Ion Collisions N. Armesto XXXIII International Conference on High Energy Physics ICHEP'06 Moscow, July 26th-August 2nd 2006 Néstor.

Jet ‘Quenching’ Status and Perspectives Urs Achim Wiedemann CERN TH and SUNY Stony Brook.

Saturation physics with an ALICE-like detector at FHC Some numbers and ideas – a discussion-starter Marco van Leeuwen, Nikhef.

M. Djordjevic 1 Heavy flavor suppression in a dynamical medium with finite magnetic mass Magdalena Djordjevic Institute of Physics Belgrade, University.

M. Djordjevic 1 Hard probes at RHIC and LHC Magdalena Djordjevic Ohio State University.

M. Djordjevic 1 Suppression and energy loss in Quark-Gluon Plasma Magdalena Djordjevic Institute of Physics Belgrade, University of Belgrade.

Heavy Flavor Measurements at RHIC&LHC W. Xie (Purdue University, West Lafayette) W. Xie (Purdue University, West Lafayette) Open Heavy Flavor Workshop.

Production, energy loss and elliptic flow of heavy quarks at RHIC and LHC Jan Uphoff with O. Fochler, Z. Xu and C. Greiner Hard Probes 2010, Eilat October.

Padova, Andrea Dainese 1 Parton energy loss in heavy-ion collisions from RHIC to LHC Andrea Dainese INFN Legnaro.

An Tai QM2004, Oakland Jan.11-17, 2004 STAR 1 STAR measurements of open charm production in dAu collisions at √s NN =200 GeV An Tai For the STAR Collaboration.

Two particle correlations: from RHIC to LHC Francesco Noferini Bologna University INFN – sez. Bologna ALICE-TOF Tuesday, May 16th Villasimius (Italy) HOT.

Heavy quarks and charmonium at RHIC and LHC within a partonic transport model Jan Uphoff with O. Fochler, Z. Xu and C. Greiner XLIX International Winter.

Jet Quenching of Massive Quark in Nuclear Medium Ben-Wei Zhang Institute of Particle Physics Central China Normal Univeristy ICHEP, Beijing --- Augest.

Probing QGP-medium interactions

Heavy-flavor particle correlations - From RHIC to LHC

ALICE and the Little Bang

Status and Implications of PID measurements at high pT

Modification of Fragmentation Function in Strong Interacting Medium

Strangeness in Quark Matter 2007

Presentation transcript:

Heavy-to-light ratios as a test of medium-induced energy loss at RHIC and the LHC N. Armesto Quark Matter 2005: 18th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions Budapest, August 4th-9th 2005 Néstor Armesto Departamento de Física de Partículas and Instituto Galego de Física de Altas Enerxías Universidade de Santiago de Compostela 1

Contents N. Armesto Heavy-to-light ratios as Motivation. 2. Model. 3. Results for RHIC. 4. Results for the LHC. 5. Bottom at RHIC. 6. Conclusions. 2 With Andrea Dainese (Padova), Carlos A. Salgado and Urs A. Wiedemann (CERN), Phys. Rev. D71 (2005) (hep-ph/ ). Work in progress with the former plus Matteo Cacciari (Paris VI).

1. Motivation: N. Armesto Heavy-to-light ratios as... 3 BDMPS/GLV/GWZ/ZW: interference of production and scatterings of the radiated gluon Characterization of the medium: Genuine prediction of this approach:  E (g) >  E (q) >  E (Q) colour charge mass effect

2. Model (I): N. Armesto Heavy-to-light ratios as... 4 Standard LO pQCD (PYTHIA): Quenching weights ( : probability for medium energy loss. ➔ CTEQ4L pdf's, EKS98. ➔ gg (qqbar) to QQbar, Q(bar)g to Q(bar)g. ➔ g to QQbar (important for the LHC). ➔ Ff into D (B) and semileptonic e-decays. ➔ RHIC: tune to STAR D-meson data. ➔ LHC: tune to NLO pQCD calculation. RHIC, no medium effects

2. Model (II): N. Armesto Heavy-to-light ratios as... 5 (Dainese et al '04; Eskola et al '04; poster by Loizides) Characteristic feature: the mass effect is smaller for smaller lengths. p T parton >5 GeV Detailed modeling of geometry.

3. Results for RHIC: N. Armesto Heavy-to-light ratios as... 6 R D/h =R AA D /R AA h (Dokshitzer-Kharzeev ’01). ➔ q/g difference affects all p T. ➔ Mass effects sizeable for p T <12 GeV. ➔ Look at 7< p T <12 GeV. ➔ v 2 (expected ~ to that for h) and centrality dependence: work in progress.

4. Results for the LHC: N. Armesto Heavy-to-light ratios as... 7 Transport coefficient (density) scaled by multiplicity: factor 2.5 to 7 larger at the LHC than at RHIC (Armesto et al '04, Eskola et al '04). Charm Beauty ➔ Small trigger bias effect (i.e. difference between massless c and b). ➔ 10<p T <20 GeV: charm sensitive to color (g at low x), bottom to mass.

5. Bottom at RHIC (I): N. Armesto Heavy-to-light ratios as... 8 ● RHIC data in AuAu: electron spectra (PHENIX: Butsyk, Kwon; STAR: Bielcik, Laue, Zhang), weak correlation in p T with D/B, and contribution from B decays (Djordjevic et al '05; talks by Djordjevic and Vogt). ● FONLL (Cacciari et al '98; '01; '05) partonic spectra supplemented with radiative Eloss via quenching weights plus FONLL fragmentation: * Uncertainties (mass variation; conservative) upto p T =6 GeV. * R AuAu e can be ~0.4 in the range 5<p T <10 GeV. Data presented here by PHENIX and STAR are consistent with radiative energy loss provided the contribution from b is small. Greene van Leeuwen

5. Bottom at RHIC (II): N. Armesto Heavy-to-light ratios as... 9 If R AuAu e <0.4 in the range 5<p T <10 GeV: ● Strong interaction of heavy quarks with the medium; hadronization inside? (talks by Djordjevic, Rapp, Teaney). ● Larger transport coefficient? (but upper bound to come, hopefully, from correlations (PHENIX: Grau; STAR: Dietel, Magestro) ). Eskola et al '04 ● How well do we control the production of heavy flavours at RHIC? Cacciari et al '05 CDF '03, 1.96 TeV

6. Conclusions: N. Armesto Heavy-to-light ratios as ● Heavy flavours constitute an experimentally accessible testing ground for our understanding of radiative energy loss. ● Both at RHIC and at the LHC heavy-to-light ratios offer solid possibilities to check the formalism like those presented here: D's for 7<p T <12 GeV at RHIC, and D's and B's for 10<p T <20 GeV at the LHC. ● Problems with single electron spectra in AuAu at RHIC may have several solutions: new effects, hadronization in medium, further constraints on the transport coefficient, contribution from b decays,... ● Data presented here by PHENIX and STAR are consistent with radiative energy loss provided the contribution from b's is small. ● Clarification of this issue will demand (at RHIC and at the LHC): * pp/dAu reference to be controlled (e.g. Kharzeev et al '03) : new possibilities to check our understanding of HF production. * If possible, data for mesons, not only for electrons.

Backup I: quenching weights N. Armesto Heavy-to-light ratios as Mass effect smaller for smaller R=qhat L 3 /2, so small for small lengths.

Backup II: bottom in FONLL N. Armesto Heavy-to-light ratios as Cacciari et al '03; '04 Reasonable description of b production.

Backup III: fixed vs. variable L N. Armesto Heavy-to-light ratios as ● m c =1.5 GeV, m b =4.75 GeV; no fragmentation yet. ● qhat=1.2 GeV 2 /fm with fixed L=6 fm reproduce R AA (0-10%) ~0.2 for pions. ● A large fixed length produces a larger effect of the mass on the Eloss: mass effect small for small L. To try to understand a disagreement with Djordjevic et al ‘05