Hadron Collider Physics 2005

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87 Proceedings 99 Cosmic Explosions of the 25th International Conference On the 10th Anniversary of SN1993J on the Physics of Semiconductors (IAU Colloquium 192) Editors: N. Miura and T. Ando Editors: J. M. Marcaide and K. W. Weiler 88 Starburst Galaxies 100 Lasers in the Conservation of Artworks Near and Far LACONA V Proceedings, Editors: L. Tacconi and D. Lutz Osnabruck,¨ Germany, Sept. 15–18, 2003 Editors: K. Dickmann, C. Fotakis, 89 Computer Simulation Studies and J.F. Asmus in Condensed-Matter Physics XIV Editors: D.P. Landau, S.P. Lewis, 101 Progress in Turbulence and H.-B. Schuttler¨ Editors: J. Peinke, A. Kittel, S. Barth, and M. Oberlack 90 Computer Simulation Studies in Condensed-Matter Physics XV 102 Adaptive Optics Editors: D.P. Landau, S.P. Lewis, for Industry and Medicine and H.-B. Schuttler¨ Proceedings of the 4th International Workshop 91 The Dense Interstellar Medium Editor: U. Wittrock in Galaxies Editors:S.Pfalzner,C.Kramer, 103 Computer Simulation Studies C. Straubmeier, and A. Heithausen in Condensed-Matter Physics XVII Editors: D.P. Landau, S.P. Lewis, 92 Beyond the Standard Model 2003 and H.-B. Schuttler¨ Editor: H.V. Klapdor-Kleingrothaus 104 Complex Computing-Networks 93 ISSMGE Brain-like and Wave-oriented Experimental Studies Electrodynamic Algorithms Editor:T.Schanz Editors: I.C. Goknar¨ and L. Sevgi 94 ISSMGE 105 Computer Simulation Studies Numerical and Theoretical Approaches in Condensed-Matter Physics XVIII Editor:T.Schanz Editors: D.P. Landau, S.P. Lewis, 95 Computer Simulation Studies and H.-B. Schuttler¨ in Condensed-Matter Physics XVI 106 Modern Trends in Geomechanics Editors: D.P. Landau, S.P. Lewis, Editors: W. Wu and H.S. Yu and H.-B. Schuttler¨ 107 Microscopy of Semiconducting Materials 96 Electromagnetics in a Complex World Proceedings of the 14th Conference, Editors: I.M. Pinto, V. Galdi, April 11–14, 2005, Oxford, UK and L.B. Felsen Editors: A.G. Cullis and J.L. Hutchison 97 Fields, Networks, 108 Hadron Collider Physics 2005 Computational Methods and Systems Proceedings of the 1st Hadron in Modern Electrodynamics Collider Physics Symposium, A Tribute to Leopold B. Felsen Les Diablerets, Switzerland, July 4–9, 2005 Editors: P. Russer and M. Mongiardo Editors: M. Campanelli, A. Clark, 98 Particle Physics and the Universe and X. Wu Proceedings of the 9th Adriatic Meeting, Sept. 2003, Dubrovnik Editors: J. Trampeti´candJ.Wess

Volumes 60–86 are listed at the end of the book. M. Campanelli A. Clark X. Wu (Eds.) Hadron Collider Physics 2005 Proceedings of the 1stHadron Collider Physics Symposium, Les Diablerets, Switzerland, July 4–9, 2005

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123 Mario Campanelli Allan Clark Xin Wu Universit`e de Geneve 24, qai Ernest-Ansermet CH-1211 Gen`eve 4, Switzerland

ISSN 0930-8989 ISBN-10 3-540-32840-8 Springer Berlin Heidelberg New York ISBN-13 978-3-540-32840-7 Springer Berlin Heidelberg New York

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The first Hadron Collider Physics Symposium (HCP2005) the Tevatron and LHC experiments. Summary talks from was held in Les Diablerets, Switzerland from 4-9 July the RHIC, HERA and b-factory experiments (BELLE and 2005. With data samples exceeding 1 fb−1 collected by BABAR) complemented the relevant sessions. In addition, the CDF and D0 experiments at the Fermilab Tevatron, specific sessions were devoted to experimental issues such and with the projected commissioning of CERN’s Large as particle identification or tracking and b-tagging, where Hadron Collider (LHC) in 2007, the Hadron Collider Con- experts from both communities could present their solu- ference (HCP) series was merged with the LHC Sym- tions and exchange ideas. posium series and renamed the Hadron Collider Physics A special guest at the symposium, 10 years after the Symposium. discovery of the top quark by the CDF and D0 experi- The Symposium was attended by more than 150 physi- ments, was Alvin Tollestrup (Fermilab) who played a cru- cists and was jointly organized by the Swiss Institute for cial role in the machine, detector and analysis activities Particle Physics (CHIPP) and CERN. Previously, the 15th leading to its discovery. HCP Conference (HCP2004) had been held at Michigan The local organizing committee from CERN and State University in June, 2004, and the 4th. LHC Sympo- CHIPP, together with the ATLAS and CMS secretaries sium was held at Fermilab in May 2003. (Jodie Hallman and Nadejda Bogolioubova) and the local Following an introductory theoretical overview focus- hotel staff made this Symposium a real success. Only the ing on the Higgs sector of the Standard Model and the role unpredictable factor, weather, played foul. Those fortu- of hadron colliders in its study, the first major session was nate participants who remained an extra day discovered devoted to the machine and detector status at the Teva- the beauty of Les Diablerets in brilliant sunshine. tron and LHC. Historically, a major function of hadron The next meeting of the series will be hosted by Duke colliders has been to probe physics at the high-energy University in May 2006, and in Summer 2007 the meeting frontier. At the Tevatron, the CDF and D0 experiments will be hosted by INFN Pisa in or near Pisa. are operating well and an integrated luminosity exceed- ing1fb−1 has already been delivered to each experiment. Allan Clark, Prior to LHC turn-on, one can expect to probe the Stan- University of Geneva, dard Model at the TeV (atto-metre) scale. At the same December 2005. time, there has been impressive construction progress on the LHC and the associated experiments (ATLAS, CMS, LHCb and TOTEM). Indeed, the new phase of detector integration and commissioning at the LHC has started. With the goal of maximizing the shared experience of the Tevatron and LHC communities, sessions were then organized around the key physics directions of experimental hadron collider research: – QCD physics; – Precision electroweak physics; – Results on c-quark, b-quark, and t-quark physics; – Probing for physics beyond the Standard Model; and – Heavy Ion physics (RHIC and LHC). Each session was introduced with a theoretical overview of the subject and followed by experimental talks from Committee

Scientiﬁc Program Committee Organizing Committee

J.Blazey (NIU) H.P. Beck (Bern) A.Clark (chair) (Geneva) M.Campanelli (Geneva) M.Della Degra (CERN) G.Dissertori (ETH Zurich) D.Green (FNAL) W.Erdmann (PSI) R.K.Ellis (FNAL) D.Jacobs (co-chair) (CERN) J.Engelen (CERN) F.Lehner (Zurich) L.Foa’ (Pisa) T.Schietinger (EPF Lausanne) R.Fleischer (CERN) X.Wu (co-chair) (Geneva) H.Frisch (Chicago) F.Gianotti (CERN) A.Goshaw (Duke) H.A.Gustafsson (Lund) J.Hobbs (Stony Brook) D.Jacobs (CERN) P.Jenni (CERN) Y.K. Kim (Chicago) T.Kobayashi (Tokyo) A.Kotwal (Duke) K.Maeshima (FNAL) M.Mangano (CERN) H.Montgomery (FNAL) T.Nakada (CERN/EPFL) J.Schukraft (CERN) A.Seiden (Santa Cruz) P.Sphicas (CERN/Athens) M.Spira (PSI) S.Stone (Syracuse) U.Straumann (Zurich) I.Tikhonov (Novosibirsk) J.Virdee (CERN/IC) H.Weerts (MSU) X.Wu (Geneva) T.Wyatt (Manchester) Summary of the Program Committee meeting for future HCP Symposia

On Thursday 7 July, 2005, those members of the HCP The meeting agreed that: Symposium Scientific Program Committee who attended – The HCP2007 Symposium would be hosted by INFN the meeting met to discuss future meetings of the se- (Pisa), in the period May-June 2007. R. Castaldi ries. (Present: A. Clark, R. Ellis, J. Engelen, H. Frisch, (INFN Pisa) agreed to submit a detailed planning at A. Goshaw, H.-A. Gustafsson, P. Jenni, M. Mangano, H. the HCP2006 Symposium at Duke University. Montgomery, A. Seiden, U. Straumann, X. Wu. Invited: – The HCP2008 Symposium would be organized by R. Castaldi, D. Rousseau, M. Lancaster, N. Russakovich) CERN and the LHC experiments at a location near It was confirmed that the HCP2006 Symposium would CERN. The symposium would be timed to present be hosted by Duke University in the period May 22-26, initial LHC results. CERN and the LHC experiments 2006. A. Kotwal (Duke) will coordinate the Symposium. were invited to present a definite proposal at the Following a call for possible venues of the HCP2007 HCP2006 Symposium at Duke University. Symposium, the following proposals were received. – The other submitted proposals should be reconsidered 1. University of Oklahoma, USA, 10-15 December, 2007, for future Symposia at the HCP2006 meeting, and that contact: P. Gutierrez, C. Kao in future regional rotations of the venue should be at- 2. Dubna, Russia, late in 2007, contact: N. Rusakivich tempted. 3. Paris, France, late in 2007, contact: D. Fournier, D. Rousseau (LAL) Allan Clark, 4. UK (location to be decided), Oct 2007- February 2008, Chair, contact: N. Mc.Cubbin (RAL) HCP2005 Scientific Program Committee, 5. Pisa, Italy, Elba (June 2007) or Pisa (late 2007), con- University of Geneva, tact: G. Tonelli, R. Castaldi December 2005. 6. Rio de Janiero (Brazil), late in 2007, contact: H. da Motta Fiho, G. Alves In addition, P. Jenni suggested a venue near CERN to present the first LHC physics results. In particular, Evian was suggested as a possibility, in view of the previous meeting there to present LHC proposals. There was a discussion on the timing of the HCP2007 Symposium, in view of the LHC turn-on and it was con- cluded by unanimous consensus that: – the HCP2007 Symposium should be held prior to LHC turn-on and should concentrate on Tevatron results and the preparations for LHC; – the HCP2008 Symposium should be timed to present initial LHC data. In the discussion it became clear that all proposals except for that of Pisa had been intended for the presentation of initial LHC data, and would need to be reconsidered. List of Participants

Name Institution Clemens Adler Physikalisches Institut Heidelberg Lorenzo Agostino CERN Manuel Aguilar-Benitez CIEMAT Ijaz Ahmed Quaid-i-Azam Univ. (Pakistan) Frederik Akesson CERN Benjamin Allanach University of Cambridge Nicola Amapane CERN Silvia Arcelli INFN Bologna Kurmar Ashok Panjab University (India) Giuseppe Avolio Universita della Calabria Pierre Barrillon Imperial College London Ulrich Baur SUNY Hans-Peter Beck LHEP, University of Bern Birkan Belin TUBITAK – Istanbul Technical University Anwar Bhatti Rockefeller University Anju Bhasin University of Jammu Jean-Jacques Blaising CERN Norm Buchanan Florida State University Emmanuel Busato LPNHE Paris Orhan Cakir Ankara University Mario Campanelli University of Geneva Joao Carvalho LIP – Coimbra Brendan Casey Brown Univ. Heriberto Castilla-Valdez Cinvestav-IPN Paoti Chang National Taiwan University Allan Clark Univ. Geneva Gustavo Conesa Balbastre IFIC – Universidad de Valencia Marie-Claude Cousinou C.P.P.M. Universite de la Mediterranee Timothy Cox University of California at Davis Andrea Dainese University of Padova & INFN Evelyne Daubie Universite de Mons-Hainaut Giovanna Davatz ETH Zurich Mario Deile CERN Bilge Demirkoz Oxford University Frederic Derue LPNHE Michael Diesburg Fermilab Mauro Dinardo Universita degli Studi di Milano Günther Dissertori ETH Zurich List of Participants IX

Name Institution Mauro Donega University of Geneva Shashikant Dugad Tata Institute of Fundamental Research Jan Ehlers ETH Zurich Keith Ellis Fermilab Jos Engelen CERN Wolfram Erdmann Paul Scherrer Institut Lyndon Evans CERN Peter Fauland LPHE-IPEP, EPFL Roger Forty CERN Henry Frisch University of Chicago Szymon Gadomski Univ. Bern Ludovic Gaudichet Universita di Torino&INFN Simone Gennai Scuola Normale Superiore & INFN Pisa Cecilia Gerber University of Illinois Heather Gerberich University of Illinois Andrea Giammanco SNS and INFN Pisa Fabiola Gianotti CERN Agostinho Gomes LIP-Lisbon Guillelmo Gomez-Ceballos Instituto de Fisica de Cantabria Al Goshaw Duke University Anna Goussiou University of Notre Dame Hans-Ake Gustafsson CERN/Lund University Kazu Hanagaki Fermilab Luc Hinz LPHE – EPFL John Hobbs SUNY Stony Brook Sadiq Hussain National Institute of Sciences and Technology Hiroyuki Iwasaki KEK David Jacobs CERN Christian Jacoby LPHE, EPF Lausanne Karl Jakobs Freiburg University Daniel Jeans CNAF Peter Jenni CERN Max Klein DESY Olga Kodolova SINP MSU Otto Kong National Central University Zoltan Kunszt ETH Zurich Didier Lacour LPHNE Paris – IN2P3/CNRS Mark Lancaster University College London Federica Legger EPFL Frank Lehner Univ. Zurich JessicaLeveque UniversityofArizona Stephen Levy University of Chicago Alison Lister ETH Zurich Arnaud Lucotte LPSC / IN2P3 Tariq Mahmoud Universite Libre Bruxelles Amélia Teixeira Maio LIP Fabio Maltoni CERN José Maneira LIP Michelangelo Mangano CERN David McGinnis Fermilab Emilio Meschi CERN Hugh Montgomery Fermilab Usman Muhammad Quaid-i-Azam University Thomas Muller Universitat Karlsruhe Korkut Ozansoy Ankara University Cigdem Ozkan Middle East Tach. Univ. Ankara Mitesh Patel CERN Thomas Peitzmann Utrecht University / NIKHEF XListofParticipants

Name Institution Davide Perego Universita’ degli Studi di Milano Bicocca &INFN Pascal Perret Laboratoire de Physique Corpusculaire CNRS/IN2P3 Chariclia Petridou Aristotle University of Thessaloniki Marco Pieri University of California San Diego Davide Pinci Unisversita "La Sapienza" INFN Roma 1 Serban Protopopescu Brookhaven National Laboratory Arnulf Quadt University of Bonn Kenneth Read Oak Ridge National Laboratory Laurent Rosselet Geneva University Giuseppe Salamanna INFN Roma 1 João Saraiva LIP Alessio Sarti LNF Frascati Vladimir Savinov University of Pittsburgh Stephane Savoff CERN Thomas Schietinger EPF Lausanne Michael Schmelling Max Planck Institute for Nuclear Physics Abraham Seiden UC Santa Cruz Anna Sfyrla University of Geneva Luca Silvestrini INFN Roma 1 Tomasz Skwarnicki Syracuse University Frederick Snider Fermilab Steinar Stapnes University of Oslo Norbert Straumann Univ. Zurich Ueli Straumann Univ. Zurich Anyes Tafford University of Illinois Fabien Tarrade IN2P3/CNRS Jeff Temple University of Arizona Yury Tikhonov Budker Institute of Nuclear Physics Alvin Tollestrup Fermilab Tomonobu Tomura University of Tsukuba Salma Umme PCSIR Pascal Vanlaer IIHE – ULB Ann Van Lysebetten CERN Gregory Veramendi University of Illinois Stefano Villa EPF Lausanne Tejinder Virdee CERN/Imperial College Iacopo Vivarelli INFN Pisa Georg Weiglein IPPP Durham Christian Weiser University of Karlsruhe Urs Achim Wiedemann CERN/University of Bielefeld John Womersley US Department of Energy Xin Wu Univ. Geneva Boleslaw Wyslouch MIT Yuehong Xie University of Edinburgh Nicolas Zwahlen LPHE – EPFL List of Participants XI XII List of Participants Contents Physics at HERA Max Klein ...... 33 1 Introduction...... 33 Preface ...... V 2Lowx Physics...... 34 Committee ...... VI 3 PhysicsattheRapidityPlateau...... 36 4 Recent Developments in HERA Physics ...... 38 Summary of the Program Committee meeting for 5 ConcludingRemarks...... 39 future HCP Symposia ...... VII Diffraction and Total Cross-Section at the Tevatron and List of Participants ...... VIII the LHC M. Deile, G. Anelli, A. Aurola, V. Avati, V. Berardi, U.Bottigli, M. Bozzo, E. Brücken, A. Buzzo, Section 1 M. Calicchio, F. Capurro, M.G. Catanesi, M.A.Ciocci, Introduction and Experimental Status S. Cuneo, C. Da Vià, E. Dimovasili, K. Eggert, M.Eräluoto,F.Ferro,A.Giachero,J.P.Guillaud, Status of the ALICE Detector at LHC J.Hasi,F.Haug,J.Heino,T.Hilden,P.Jarron, Hans-Ake Gustafsson, For the ALICE Collaboration .. 3 J. Kalliopuska, J. Kaspar, J. Kempa, C. Kenney, A. 1 Introduction...... 3 Kok, V. Kundrat, K. Kurvinen, S. Lami, J. Lämsä, G. 2 Statusofthedetectorsubsystems...... 3 Latino, R. Lauhakangas, J. Lippmaa, M. Lokajicek, 3 Statusofcontrolsystemsandcomputing...... 6 M. LoVetere, D. Macina, M. Macrí, M. Meucci, 4 Conclusion...... 7 S. Minutoli, A. Morelli, P. Musico, M. Negri, H. Niewiadomski, E. Noschis, J. Ojala, F. Oljemark, ATLAS status R. Orava, M. Oriunno, K. Österberg, R.Paoletti, S. Steinar Stapnes - For the ATLAS collaboration ..... 8 Parker, A.-L. Perrot, E. Radermacher, E. Radicioni, 1 Introduction...... 8 E. Robutti, L. Ropelewski, G. Ruggiero, H. Saarikko, 2 MagnetSystems...... 8 G.Sanguinetti, A. Santroni, S. Saramad, F. Sauli, 3 InnerDetector...... 9 A.Scribano, G. Sette, J. Smotlacha, W. Snoeys, C. 4 Calorimeters...... 10 Taylor, A. Toppinen, N.Turini, N. Van Remortel, L. 5 MuonSpectrometer...... 10 Verardo, A. Verdier, S. Watts, J. Whitmore ...... 40 6 TriggerandDAQSystem...... 12 1 Introduction...... 40 7 Computing, Software and Physics Preparation . . . 12 2 Elastic pp and p¯p Scattering...... 41 8 Summary...... 12 3 Total pp and p¯p Cross-Section...... 42 9 Acknowledgement...... 12 4 Diffraction...... 43

Status of CMS The Jet Energy Scale and Inclusive Jet Cross Section at Tejinder S. Virdee ...... 13 DØ 1 Introduction...... 13 Norm J. Buchanan ...... 46 2 CMS:TheCompactMuonSolenoid...... 13 1 Introduction...... 46 3 TheStatusofCMS...... 14 2 TheDØCalorimeter...... 46 4 Conclusions...... 18 3 JetEnergyScale...... 46 5 Acknowledgements...... 18 4 InclusiveJetCrossSection...... 48 Status of the LHCb experiment 5 Conclusion...... 49 Roger Forty ...... 19 6 Acknowledgments...... 49 1 Introduction...... 19 2 Detectorstatus...... 20 Determination of Jet Energy Scale and Measurement of 3 Expectedperformance...... 22 Inclusive Jet Production at CDF-II 4 Conclusion...... 23 Anwar A Bhatti ...... 50 1 JetEnergyScaleDetermination...... 50 2 InclusiveJetCrossSection...... 52 Section 2 QCD Physics at the Tevatron and LHC Fragmentation, Underlying Event and Jet Shapes at the Tevatron (CDF) Theoretical Perspectives in QCD: Alison Lister for the CDF Collaboration ...... 54 R. Keith Ellis ...... 27 1 Introduction...... 54 1 Introduction...... 27 2 Theroleoftreegraphs...... 27 2 Fragmentation...... 54 3 SpinortechniquesandMHVamplitudes...... 27 3 Underlyingevent...... 55 4 Next-to-leadingorder...... 29 4 JetShapes...... 56 5 Next-to-next-leadingorder...... 30 5 Conclusions...... 57 6 Conclusion...... 32 6 Acknowledgements...... 57 XIV Contents

High pT Jets and Photons at the Tevatron Di-Boson Physics at the Tevatron Cecilia E. Gerber ...... 58 A. T. Goshaw (for the CDF and DØ Collaborations) .. 86 1 Introduction...... 58 1 Introduction...... 86 2 DijetAzimuthalDecorrelations...... 58 2 Wbosonproductionwithaphoton...... 86 3 b JetCrossSections...... 58 3 W +W − and W ±Z boson pair production ...... 87 4 PhotonStudies...... 60 4 Zbosonproductionwithaphoton...... 87 5 Conclusions...... 62 5 Summaryandconclusions...... 88 6 Acknowledgments...... 62 6 Acknowledgements...... 88

Jet Measurements in ATLAS Precision Electroweak Measurements at ATLAS and I.Vivarelli ...... 63 CMS 1 Introduction...... 63 Nicola Amapane ...... 91 2 TheATLAScalorimeter...... 63 1 Introduction...... 91 3 CellClustering...... 63 2 Measurement of the W boson and top quark mass . 91 4 JetReconstruction...... 64 3 Drell-Yanproductionofleptonpairs...... 93 5 JetCalibration...... 65 4 PartonDistributionFunctions...... 93 6 InSituCalibration...... 65 5 ProductionofVectorBosonPairs...... 94 7 Conclusions...... 66 6 Conclusions...... 94

Jet energy measurements in CMS Olga Kodolova (CMS Collaboration) ...... 67 Section 4 1 Introduction...... 67 Preparing for LHC I 2 CMSdetector...... 67 3 Jetreconstruction...... 67 Muon Identification at the Tevatron 4 Jetcalibration...... 68 Jeff Temple, for the CDF and DØ Collaborations ... 99 1 Introduction...... 99 2 MuonDetection...... 99 Section 3 3 MuonTriggering...... 100 Electroweak Physics at the Tevatron and LHC 4 MuonReconstruction...... 100 5 Conclusion...... 101 Electroweak Physics at the Tevatron and LHC: Tau Identification at the Tevatron Theoretical Status and Perspectives Stephen Levy (on behalf of the CDF and D∅ Ulrich Baur ...... 73 collaborations) ...... 102 1 Introduction...... 73 1 Introduction...... 102 2 WeakBosonPhysics...... 73 2 HadronicTauReconstruction...... 102 3 Di-bosonProduction...... 76 3 TauTriggers...... 104 4 HiggsBosonPhysics...... 77 4 ElectroweakTauResults...... 104 5 Summary...... 77 5 SearchesforNewPhysics...... 105 √W/Z Production Cross Sections and Asymmetries at 6 Conclusion...... 105 s =1.96 TeV Serban Protopopescu ...... 79 Electron and photon identification in ATLAS 1 Introduction...... 79 F. Derue - For the ATLAS collaboration ...... 107 2 W/Z → µ’s or → e’s...... 79 1 Introduction...... 107 3 W/Z → τ ’s...... 80 2 The electron and photon selection goals ...... 107 4 Z/γ∗ → ee ForwardBackwardAsymmetry..... 81 3 Beamtestperformance...... 107 5 W → eν ChargeAsymmetry...... 82 4 Combined ID/EM calorimeter performance . . . . . 109 6 Conclusion...... 82 5 Conclusion...... 111 7 Acknowledgements...... 82 Muon identification at CMS, and confrontation with W Mass and Properties Monte Carlo and test beam data Mark Lancaster (on behalf of the CDF and DØ Tim Cox ...... 112 collaborations) ...... 83 1 Introduction...... 112 1 Introduction...... 83 2 Simulation confrontation with test beam data . . . . 113 2 CDFWMassMeasurement...... 83 3 Muonidentification:thelevel1trigger...... 114 3 WWidthmeasurement...... 84 4 Muon identification: the higher-level trigger . . . . . 114 4 Futuremeasurements...... 85 5 Muon identification: offline reconstruction ...... 115 5 Acknowledgements...... 85 6 Conclusions...... 116 Contents XV

Muon Identiﬁcation at Atlas and Comparison with Searches for BSM (non-SUSY) physics at the Tevatron Simulation and Test Beam Data Heather K Gerberich (for the CDF and DØ G. Avolio, on behalf of the ATLAS muon community .. 117 Collaborations) ...... 149 1 MuonSystemOverview...... 117 1 Introduction...... 149 2 Muon Spectrometer Sub-Detectors ...... 118 2 HighMassDileptonSearches...... 149 3 TheAlignmentSystem...... 118 3 Charged Heavy Vector Boson (W )...... 151 4 TheMuonTriggerSystem...... 118 4 Leptoquarks...... 152 5 MuonMomentumMeasurement...... 119 5 ExcitedElectrons...... 152 6 MuonSystemTestatCERNH8Area...... 119 6 Summary...... 153 7 Conclusions...... 121 Higgs Searches at the Tevatron 8 Acknowledgements...... 121 Anna Goussiou ...... 154 1 Introduction...... 154 Tau identiﬁcation at ATLAS : importance, method and 2 StandardModelHiggs...... 154 confrontation with Monte Carlo and test beam 3 HiggsintheMSSM...... 157 F.Tarrade, on behalf of the ATLAS Collaboration ... 122 1 Introduction...... 122 Searches for Higgs Bosons at LHC 2 ATLASdetector...... 122 Marco Pieri ...... 159 3 Physics processes with τ leptons and their decays . . 123 1 Introduction...... 159 4 Hadronictaureconstruction...... 123 2 StandardModelHiggsBoson...... 159 5 Tautrigger...... 125 3 MSSMHiggssearches...... 161 6 Experimentalresultsfromtestbeam...... 125 4 Measurement of Higgs bosons parameters ...... 164 7 Conclusion...... 126 5 Conclusions...... 164

Tau identification in CMS Sensitivity to New Physics in the B-Sector Simone Gennai ...... 127 Michael Schmelling ...... 165 1 Introduction...... 127 1 Introduction...... 165 2 CP-ViolationMeasurements...... 165 2 TauTrigger...... 127 3 CKM-MatrixandUnitarityTriangle...... 166 3 Level1Trigger...... 127 4 ProbingNewPhysics...... 166 4 OffLineSelection...... 129 5 Experimental Constraints on New Physics ...... 168 5 Conclusions...... 130 6 B-PhysicsatLHC...... 169 6 Acknowledgement...... 130 7 Summary...... 170 Particle identification of the LHCb experiment A. Van Lysebetten ...... 131 Section 6 1 Introduction...... 131 Heavy Ions 2 Hadron identification with the RICH detectors . . . 131 3 Leptonidentification...... 133 Nucleus-nucleus and proton-nucleus collisions at the 4 Conclusions...... 134 LHC Urs Achim Wiedemann ...... 173 1 Introduction...... 173 Section 5 2 Collective phenomena at RHIC and open questions . 174 Beyond the Standard Model 3 Probesoftheproduceddensematter...... 175

Theoretical Developments Beyond the Standard Model Direct Photons, Vector Mesons and Heavy Flavor B.C. Allanach ...... 137 Production at RHIC K.F. Read ...... 179 1 The Technical Hierarchy Problem and Supersymmetry 137 1 Introduction...... 179 2 HiggslessModels...... 141 2 DirectPhotons...... 180 3 LittleHiggsandT-Parity...... 142 3 VectorMesons...... 181 4 Conclusions...... 142 4 HeavyFlavorProduction...... 181 5 SummaryandConclusions...... 183 Searches for Supersymmetry at the Tevatron Marie-Claude Cousinou ...... 144 Jet production and high pT hadrons at RHIC 1 Introduction...... 144 Thomas Peitzmann ...... 184 2 Searches for Charginos, Neutralinos and Sleptons. . 144 1 Introduction...... 184 3 Searchesforsquarksandgluinos...... 146 2 Single Hadron Suppression ...... 184 0 + − 4SearchesforBs → µ µ decays...... 148 3 Jet-LikeCorrelations...... 186 5 Conclusion...... 148 4 Summary...... 189 XVI Contents

Open heavy-flavour production in ALICE Bs Properties at the Tevatron A. Dainese for the ALICE Collaboration ...... 190 Guillelmo Gómez-Ceballos ...... 228 1 Introduction...... 190 1 Introduction...... 228 + − 2 Heavy-flavourproductionfrompptoAA...... 190 2 Bs(d) → h h Decays...... 228 3 Heavy-flavourdetectioninALICE...... 191 3 ∆Γs/Γs Measurement in Bs → J/Ψφ Decays.... 229 4 Measurement of charm production and in-medium 4 Bs Mixing...... 230 quenching...... 191 5 Conclusions...... 232 5 Measurement of beauty production in the semi-electronicdecaychannel...... 193 Searches for Rare B meson decay at Tevatron 6 Measurement of beauty production in the Shashikant R. Dugad ...... 233 semi-muonicdecaychannel...... 194 1 Introduction...... 233 7 Conclusions...... 194 2 Methodology...... 233 3 DataProcessing...... 234 Identification of high energy direct photons and 4 AnalysisofD0Data...... 235 photon-jet events at LHC with ALICE 5 AnalysisofCDFData...... 236 G. Conesa, H. Delagrange, J. Díaz, Y.V. Kharlov, Y. 6 Results...... 236 Schutz ...... 195 1 Introduction...... 195 Trigger Strategy and Performance of the LHCb Detector 2 Event simulation and main reconstruction features . 195 Mitesh Patel ...... 237 3 Prompt photon identification: Isolation Cut Method 196 1 Introduction...... 237 4 Photon-tagged jets identification ...... 198 2 TriggerStrategy...... 237 5 Conclusions...... 200 3 ThethreelevelsoftheLHCbtrigger...... 238 4 UsingRICHinformationinthetrigger...... 239 Electron Identification with the ALICE TRD 5 Conclusion...... 240 Clemens Adler (for the ALICE TRD Collaboration) .. 201 1 Introduction...... 201 Event reconstruction and physics performance of the 2 TheALICETRD...... 201 LHCb experiment 3 ElectronIdentification...... 202 Yuehong Xie (on behalf of the LHCb Collaboration) ... 242 4 RecentTestBeamResults...... 203 1 Introduction...... 242 5 Conclusions...... 205 2 Eventreconstructionperformance...... 242 Heavy Ions in ATLAS 3 Physicssensitivity...... 243 L. Rosselet for the ATLAS Collaboration ...... 206 4 Conclusion...... 244 1 Introduction...... 206 B-Physics expectations at ATLAS and CMS 2 Simulations...... 206 Petridou Chariclia ...... 248 3 Globalobservables...... 207 1 Introduction...... 248 4 Heavy–quarkonia suppression ...... 207 2 The strategy of ATLAS and CMS on B-Physics . . . 248 5 Jetquenching...... 208 3 Detectorperformance...... 249 6 Proton–nucleusphysics...... 208 4MeasurementoftheB mixingparameters...... 250 7 Conclusion...... 209 s 5 Rare Decays, prospects for ATLAS and CMS . . . . 250 6 Conclusions...... 251 Section 7 7 Acknowledgments...... 252 Heavy Quark Physics

Beauty Physics: Theoretical Status and Future Section 8 Perspectives Preparing for LHC II Luca Silvestrini ...... 213 1 Introduction...... 213 b-tagging at DØ 2 TheSMUTanalysis...... 213 K. Hanagaki for the DØ Collaboration ...... 255 3 TheUTanalysisbeyondtheSM...... 214 1 Introduction...... 255 4 MFVmodels...... 216 2 TheDØDetector...... 255 5NewPhysicsinb → s transitions...... 217 3 Methods...... 255 6 Outlook...... 219 4 Performance&Issues...... 256 5 Conclusions...... 258 Results from Belle and BaBar Paoti Chang ...... 221 B tagging at CDF 1 Introduction...... 221 Daniel Jeans for the CDF collaboration ...... 259 2 φ1/β Extraction...... 221 1 Introduction...... 259 3 CP violation in b → sqq ...... 222 2 TevatronandCDF...... 259 4 φ2(α) and φ3(γ) ...... 223 3 Tracking and Primary Vertex ﬁnding ...... 259 5 RareDecayswithLeptonsorPhotons...... 224 4 Lifetime tagging algorithms ...... 260 6OtherCPV ResultsandMoreObservations..... 226 5 Soft Muon tagger ...... 262 7 Summary...... 227 6 Conclusions and plans for improvements ...... 262 Contents XVII

Pixel detector in BTeV Single Top At The Tevatron Mauro Dinardo for the BTeV collaboration ...... 263 Anyes Taffard (on behalf of the CDF & 1 Introduction...... 263 DØ collaborations) ...... 296 2 Thephysicsbasisofthetrigger...... 263 1 Introduction...... 296 3 Pixeldetector...... 264 2 CDF Search For Single Top Quark Production . . . 296 4 The BTeV front end electronics and data acquisition 3 DØ Search for Single Top Quark Production . . . . 297 system...... 265 4 ConclusionsAndProjections...... 298 5 Firstleveltriggerimplementation...... 265 6 Level1triggerperformancies...... 266 Top Properties and Rare Decays from the Tevatron 7 Conclusions...... 267 Arnulf Quadt ...... 300 1 Introduction...... 300 Track and Vertex Reconstruction in CMS for Key 2 Top Quark Interactions to Gauge Bosons ...... 300 Physics Processes 3 Fundamental Properties of the Top Quark ...... 302 P. Vanlaer, for the CMS collaboration ...... 268 4 AnomalousTopQuarkProduction...... 303 1 Introduction...... 268 5 AnomalousTopQuarkDecays...... 303 2 Trackreconstruction...... 269 6 New Physics in Events with tt¯ Topology...... 304 3 Gaussian-Sum track reconstruction for electrons . . 270 7 Summary...... 304 4 VertexFinding...... 271 5 VertexFitting...... 272 Top physics prospects in ATLAS 6 Conclusions...... 273 Arnaud Lucotte ...... 305 CDF computing and event data models 1 Introduction...... 305 F.D. Snider for the CDF Collaboration ...... 274 2 Topquarkmassmeasurement...... 305 ¯ 1 Introduction1 ...... 274 3 W and top quark polarization in tt events...... 307 2 Computingmodelanddataflow...... 274 4 Single-topcross-sectionmeasurement...... 309 3 Computingsystems...... 275 5 Conclusion...... 310 4 Gridmigrationplans...... 276 5 Eventdatamodel...... 277 Top quark studies and perspectives with CMS 6 Successes ...... 278 Andrea Giammanco ...... 311 7 Summary ...... 278 1 Introduction...... 311 8 Acknowledgments...... 278 2 Top quark mass measurement at LHC ...... 311 3 Spincorrelations...... 312 Preparation for Analysis at CMS 4 Wpolarizationintopdecay...... 312 Christian Weiser ...... 279 5 Singletopproduction...... 313 1 Introduction...... 279 6 Conclusions...... 314 2 ToolsforAnalysis...... 279 3 Conditions...... 280 4 AlgorithmCalibrationinData...... 282 Section 10 5 Example Analysis: Associated Higgs Boson Production282 Conclusion 6 Summary...... 283 Experimental Summary and Perspectives John Womersley ...... 317 Section 9 1 Outline...... 317 Top Quark Physics 2 Whatistheuniversemadeof?...... 317 3 DescribingtheUniverse...... 318 Top Mass at the Tevatron 4 AFewClosingComments...... 321 Tomonobu Tomura for the CDF and DØ Collaborations 287 5 Conclusions...... 321 1 Introduction...... 287 2 MeasurementsofTopMass...... 287 Einstein’s Contributions to Quantum Theory 3 Summary...... 291 Norbert Straumann ...... 322 tt¯ cross section at the Tevatron 1 Introduction...... 322 Emmanuel Busato ...... 292 2 Einstein’s first paper from 1905 ...... 322 1 Introduction...... 292 3 Energy and momentum fluctuations of the 2 Di-leptonchannels...... 292 radiationfield...... 324 3 Lepton+jetschannels...... 293 4 Reactions...... 325 4 All-jetschannel...... 294 5 DerivationofthePlanckdistribution...... 325 5 Summary...... 295 6 Bose-Einstein statistics for degenerate material gases 326 7 Einstein and the interpretation of 1 Work supported by the U.S. Department of Energy under quantummechanics...... 326 contract No. DE-AC02-76CH03000. References...... 327 XVIII Contents

Section 11 LHCb RICH Detectors Posters D. L. Perego on behalf of the LHCb RICH Collaboration 348 1 LHCbRICHDetectors...... 348 The construction of the ALICE hmpid rich detector 2 Silica Aerogel ...... 348 ∗ B.Belin on behalf of the ALICE-HMPID group ..... 331 3 HybridPhotonDetectors...... 349 1 Introduction...... 331 4 RICHParticleIDPerformance...... 349 2 Detector...... 331 5 StatusRICHDetectors...... 349 3 QualityControl...... 332 4 CsIPhotocathode...... 332 Production and test of the LHCb Muon Wire Chambers 5 TestBeam...... 333 D. Pinci and A. Sarti on behalf of the LHCb collaboration 350 1 Introduction...... 350 6 Conclusion...... 333 2 Qualitytests...... 350 CDF spectroscopy results 3 Productionstatus...... 352 Mario Campanelli ...... 334 4 Conclusion...... 352 1 Introduction...... 334 + + Techniques for Bs mixing at CDF 2 Ds D massdiﬀerence...... 334 Giuseppe Salamanna on behalf of the CDF Collaboration 353 3 MassesofBhadrons...... 334 1 Introduction...... 353 4 Mass and width of orbitally-excited charm states . . 334 2 Flavour Tagging ...... 353 5 Observation of the X(3872) ...... 334 3 Decaylenght...... 354 6 Study of the helicity of the X(3872) ...... 335 4 Finalstatereconstruction...... 354 7 Conclusions...... 335 5 Signiﬁcanceandresults...... 354

Effective K-factors: a method to include higher order Heavy flavour production at CDF QCD corrections in parton shower Monte Carlos: the Mario Campanelli Monica D’Onofrio Sofia Vallecorsa, example of H → WW∗ → 2 2ν Anant Gajjar A. Metha Tara Shears ...... 355 Giovanna Davatz ...... 336 1 Introduction...... 355 2 HeavyflavourjetsidentificationatCDF...... 355 Construction and Performance of the ATLAS 3 Inclusive b -jet production cross section ...... 355 Semi-Conductor Tracker Barrels 4 b¯b ...... 356 Bilge M. Demirköz ...... 338 5 Photon+heavyflavour...... 356 1 Introduction...... 338 6 Conclusions...... 356 2 SCTmodulesandreadout...... 338 3 SCTBarrelConstructionandtesting...... 338 4 Conclusions...... 339

Charmless B decays at CDF Mauro Donegà for the CDF collaboration ...... 340 1 Introduction...... 340 0 → ± ∓ 2 Bd/s h h ...... 340 3 Bs → VV decays...... 341 4 Conclusion...... 341

Standard Model Higgs Searches at ATLAS Luis Roberto Flores Castillo, on behalf of the Higgs Working Group of the ATLAS collaboration ...... 342 1 Introduction...... 342 2 Inclusiveﬁnalstates...... 342 3 VectorBosonFusion...... 342 4 References...... 343

The LHCb trigger and readout Federica Legger, Thomas Schietinger ...... 344 1 Introduction...... 344 2 Readoutsystemandtriggerarchitecture...... 344 3 Thetriggerstrategies...... 345 4 Conclusions...... 345

Anomalous single top production with ATLAS Orhan Çakır ...... 346 1 Introduction...... 346 2 AnomalousProduction...... 347 3 Conclusion...... 347