2011 QCD and High Energy Interactions - Rencontres de Moriond ...

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We thank the organizers of the XLVIth Rencontres de Moriond: • A. Abada, J. Conrad, S. Davidson, P. Fayet, J.-M. Frère, P. Hernandez, L. Iconomidou- Fayard, P. Janot, M. Knecht, J. P. Lees, S. Loucatos, F. Montanet, L. Okun, J. Orloff, A. Pich, S. Pokorski, D. Wood for the “Electroweak Interactions and Unified Theories” session, • D. Averin, C. Beenakker, Y. Blanter, K. Ennslin, Jie Gao, L. Glazman, C. Glattli, Y. Imry, Young Kuk, T. Martin, G. Montambaux, V. Pellegrini, M. Sanquer, S. Tarucha for the “Quantum Mesoscopic Physics” session, • E. Augé, E. Berger, S. Bethke, A. Capella, A. Czarnecki, D. Denegri, N. Glover, B. Klima, M. Krawczyk, L. McLerran, B. Pietrzyk, L. Schoeffel, Chung-I Tan, J. Trân Thanh Vân, U. Wiedemann for the “QCD and High Energy Hadronic Interactions” session, • M.-Ch. Angonin, R. Ansari, M.-A. Bizouard, L. Blanchet, M. Cruise, J. Dumarchez, Y. Giraud-Héraud, S. Hoedl, Ch. Magneville, E. Rasel, S. Reynaud, F. Ricci, R. Schnabel, J.-Y. Vinet, P. Wolf for the “Gravitational Waves and Experimental Gravity” session, joint with the GPhyS Colloquium and the conference secretariat and technical staff: V. de Sá-Varanda and C. Bareille, I. Cossin, G. Dreneau, D. Fligiel, S. Hurtado, N. Ribet, S. Vydelingum. We are also grateful to Andrea Righetto, Gioacchino Romani, Erik Agostini, Patrizia Rago, Matteo Tuzzi and the Planibel Hotel staff who contributed through their hospitality and cooperation to the well-being of the participants, enabling them to work in a relaxed atmosphere. The Rencontres were sponsored by the Centre National de la Recherche Scientifique, the Institut National de Physique Nucléaire et de Physique des Particules (IN2P3-CNRS), the Fondation NanoSciences, the Commissariat à l’Energie Atomique (DSM and IRFU), the Centre National d’Etudes Spatiales, the European Space Agency, the Fonds de la Recherche Scientifique (FRS-FNRS), the Belgium Science Policy and the National Science Foundation. We would like to express our thanks for their encouraging support. It is our sincere hope that a fruitful exchange and an efficient collaboration between the physicists and the astrophysicists will arise from these Rencontres as from previous ones. E. Augé, J. Dumarchez and J. Trân Thanh Vân
Foreword Contents 1. Higgs Searches for low-mass Standard Model Higgs at the Tevatron M. Cooke 3 Searches for high-mass SM Higgs at the Tevatron R. Lysák 7 Standard Model Higgs Searches at the Tevatron: Combinations J. Hays 11 Searches for non-standard model Higgs at the Tevatron R. St. Denis 15 LHC beam operations: past, present and future M. Lamont 21 HERA precision measurements and impact for LHC predictions V. Radescu 27 Higgs Boson Searches at CMS and ATLAS W. Quayle 31 Theoretical uncertainties in Higgs searches A. Djouadi 35 2. New Phenomena SUSY Searches at the Tevatron Ph. Gris 41 SUSY searches at ATLAS N. Barlow 45 SUSY searches in CMS M. Chiorboli 53 Non-SUSY searches at the TeVatron J. Strologas 57 Non-SUSY searches at ATLAS E.N. Thompson 61 The Quasi-Classical Model in SU(N) Gauge Field Theory A.V. Koshelkin 67 3. Top Top quark pair production cross section at the Tevatron S. Amerio 73 Top Quark Mass Measurements at the Tevatron Zhenyu Ye 79 Recent results on top physics at ATLAS M. Cristinziani 83 Measurements of the properties of the top quark O. Brandt 87 Heavy quark and quarkonia production with the LHCb detector N. Mangiafave 91 Heavy flavour production at ATLAS Z. Doleˇzal 95 Heavy flavor production at CMS K. A. Ulmer 99 4. Heavy Flavours Heavy flavour in a nutshell R. Lambert 105 Recent B physics results from the TeVatron S. Behari 111 Search for B 0 s → µ+ µ − and B 0 d → µ+ µ − at LHCb M.-O. Bettler 117 In pursuit of new physics with B decays R. Fleischer 121 Charmless hadronic b-decays at BABAR AND BELLE N. Arnaud 125 Estimating the Higher Order Hadronic Matrix Elements in the Heavy Quark Expansion Th. Mannel 129 CP violation results and prospects with LHCb Direct CP asymmetry in ¯B → Xs,d γ decays C. Langenbruch G. Paz 135 139 Charm spectroscopy at B factories R. Cenci 143 Charm physics results and prospects with LHCb P.M. Spradlin 147 Two body hadronic D decays Cai-Dian Lü 151 Exotic/charmonium hadron spectroscopy at Belle and BaBar D. Liventsev 157 Recent Results on Charmonium from BESIII M. Maggiora 161 Unitarity of exclusive quark combination model: Exotic hadron production, entropy change and charmonium production for colour-singlet many-quark system S.-Y. Li 165 5. QCD Latest Jets Results from the Tevatron C. Mesropian 171 Recent results on jets from CMS F. Pandolfi 175 Recent results on jets with ATLAS G. Pospelov 179 EPOS 2 and LHC Results About the helix structure of the Lund string T. Pierog S. ˇ Todorova-Novaá 183 187 Improving NLO-parton shower matched simulations with higher order matrix elements K.M. Hamilton 191 New Results in Soft Gluon Physics Ch. White 195
Page 1 and 2: 2011 QCD and High Energy Interactio
Page 3 and 4: Proceedings of the XLVIth RENCONTRE
Page 5: 2011 RENCONTRES DE MORIOND The XLVI
Page 9: 1. Higgs
Page 12 and 13: 95% CL Limit/SM 10 1 Tevatron Run I
Page 14 and 15: Events/5 GeV 6 10 5 10 4 10 3 10 2
Page 16 and 17: Events / 0.5 CDF Run II Preliminary
Page 18 and 19: For the most sensitive sub-channel
Page 20 and 21: Table 1: Table listing the various
Page 22 and 23: various SM Higgs mass hypotheses. T
Page 24 and 25: constraints on parameters are given
Page 26 and 27: Figure 2: Invariant mass of the ele
Page 28 and 29: Figure 4: CDF Exclusion limits for
Page 30 and 31: Table 1: Main phases of 2010 commis
Page 32 and 33: Table 4: Parameter list for early (
Page 34 and 35: luminosity of 1.2×10 33 cm −2 s
Page 36 and 37: 2 QCD Analysis settings HERA PDFs a
Page 38 and 39: min 2 - 2 20 15 10 5 0 H1 and ZEUS
Page 40 and 41: SM σ / σ 95% CL Limit on 3 10 2 1
Page 42 and 43: NNLO σ/ σSM 95% CL Upper Bound on
Page 44 and 45: the report of this working group. I
Page 46 and 47: 2.3 The impact of different PDF par
Page 49 and 50: SUSY Searches at the Tevatron Ph. G
Page 51 and 52: on the quality (loose or tight) and
Page 53 and 54: SUSY searches at ATLAS N. Barlow, o
Page 55 and 56: channel. These results are combined
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Figure 2: The top left plot shows t
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2010 data. Analysis techniques for
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as main discriminator between event
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sign leptons is particularly intere
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N of events 5 10 DATA 10 4 3 10 10
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) [pb] ν e → B(W’ × σ 10 1 -
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2 Searches in the dijet final state
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ing that the neutrinos were the onl
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The Quasi-Classical Model in SU(N)
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g (γ µ kµ) γ µ Aa µ g (pk)
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3. Top
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of their vertex with respect to the
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of about 9%. 3.1 Differential Cross
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Figure 5: Summary of most recent CD
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the minimum number of jets identifi
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where f’s are probability functio
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hood technique, with a simultaneous
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momentum direction of the b quark f
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Events 200 150 100 50 -1 DØ L=5.4
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after all corrections in the M t¯t
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for prompt J/ψ under the fully tra
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2 Events / 20 MeV/c 50 40 30 20 10
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ATLAS - consists of four parts (mon
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5 D mesons High cross-sections of D
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μ +X') [nb/GeV] → b+X → (pp T
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GeV) μ |
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HEAVY FLAVOUR IN A NUTSHELL Robert
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Figure 1: Overlapping constraints o
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Figure 3: Constraints on new physic
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RECENT B PHYSICS RESULTS FROM THE T
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(IP) distributions are fitted separ
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decays CDF extracts Using a 5.94 fb
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Search for B 0 s → µ+ µ − and
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Ref. 10,11 . The expected GL distri
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IN PURSUIT OF NEW PHYSICS WITH B DE
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τK + K −/τBs 1.01 1.00 0.99 0.9
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CHARMLESS HADRONIC B-DECAYS AT BABA
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surements (fL ∼ 0.5). Several att
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Estimating the Higher Order Hadroni
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the resulting exponent suggests to
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The counterpart of the ground-state
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(a) Tree level signal decay b ¯Bs
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the B0 d system LHCb profits from i
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This result is based on averaging o
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y non-perturbative effects. Using t
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e M(Dπ) distributions obtained D +
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CHARM PHYSICS RESULTS AND PROSPECTS
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LHCb is working towards its first m
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Two body hadronic D decays Yu Fushe
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where the effective coefficients aA
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6. J. J. Sakurai, Phys. Rev. 156, 1
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states: 6π, 2K4π, 4K2π, KSK3π 1
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egion of X(3872), which corresponds
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Figure 1: The π 0 recoil mass spec
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η → π + π − π 0 η ′ →
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conservation. This second principle
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many of them come from gluon nonper
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Latest Jets Results from the Tevatr
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in for the inclusive trijet event s
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RECENT RESULTS ON JETS FROM CMS F.
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dy (pb/GeV) /dp 2 d 10 10 10 9 10
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RECENT RESULTS ON JETS WITH ATLAS G
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| y| < 0.3 ATLAS Preliminary 2.1 <
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EPOS 2 and LHC Results TanguyPierog
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positions are randomly distributed
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ABOUT THE HELIX STRUCTURE OF THE LU
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Figure 2: Left: Correlations betwee
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Improving NLO-parton shower matched
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due to the inclusion of higher orde
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New Results in Soft Gluon Physics C
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Figure 2: Spacetime depiction of Dr
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Central Exclusive Meson Pair Produc
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in the CEP cross section. However i
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AN AVERAGE b-QUARK FRAGMENTATION FU
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1/N dN/dx 3.5 3 2.5 2 1.5 1 0.5 ALE
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W + W + jj at NLO in QCD: an exotic
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Σ fb Σ fb 3.5 3.0 2.5 2.0 0.65 0.
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W/Z+Jets and W/Z+HF Production at t
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Figure 2: Measured inclusive jet di
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W and Z physics with the ATLAS dete
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SHERPA 9 MC generators but not by P
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W/Z + Jets results from CMS V. CIUL
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Events / 0.1 600 500 400 300 200 10
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TEVATRON RESULTS ON MULTI-PARTON IN
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iterative midpoint cone algorithm w
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INVESTIGATIONS OF DOUBLE PARTON SCA
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¦ § ¦ ¨ ¥ ¦ ¨ § ¦ © ¦ §
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Figure 4: Two-dimensional distribut
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SOFT QCD RESULTS FROM ATLAS AND CMS
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as a function of multiplicity for t
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Determination of αS using hadronic
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α S (m Z 0) 0.15 0.14 0.13 0.12 0.
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Reaching beyond NLO in processes wi
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dσ/dp t,max [fb/GeV] 10 5 10 4 10
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Nonlocal Condensate Model for QCD S
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The lower bound for the integration
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AN ALTERNATIVE SUBTRACTION SCHEME F
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where MBorn,g is the underlying Bor
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THE NNPDF2.1 PARTON SET F. CERUTTI
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ottom masses mb of 4.25, 4.5, 5.0 a
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HOLOGRAPHIC DESCRIPTION OF HADRONS
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∫ SYM = κ d 4 ( 1 xdzTr 2 h(z)F
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Nuclear matter and chiral phase tra
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fact that for Nc ≫ 3 a gas of fre
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Recent Results on Light Hadron Spec
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Figure 3: Mass spectrum fitting wit
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MEASUREMENT OF THE J/ψ INCLUSIVE P
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2 Counts per 40 MeV/c 120 100 80 60
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STUDY OF Ke4 DECAYS IN THE NA48/2 E
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photons were accepted while particl
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6. Structure Functions Diffraction
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2 Hadronic Final States and Diffrac
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3 Summary A brief overview of recen
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Using HERA Data to Determine the In
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k f n 0.4 0.2 0 -0.2 0.4 0.2 0 -0.2
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The singular term, on the other han
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Pomeron Kernel: The leading order B
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DIFFRACTION, SATURATION AND pp CROS
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In Ref. 6 , the saturated Froissart
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Transverse Energy Flow with Forward
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1/N d dE t /dη 0.1 0.09 0.08 0.07
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7. Heavy Ions
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dη)/(0.5〈 N 〉 ) part ch (dN 10
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) 3 (fm long R side R out R 400 350
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correlation density is computed as
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Away-side gaussian width 1.4 1.2 1
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Figure 1: (a) J/ψ rapidity distrib
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lower x, or forward rapidity one ex
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φ ∆ /d assoc dN trig 1/N 0.5 0.4
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AA,Pythia I 2.5 2.0 1.5 1.0 0.5 0.0
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(1/N ) dN/dA evt J φ Δ ) dN/d (1/
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[GeV] Tower ET Σ 50 45 40 35 30 25
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3 Results 3.1 Dijet Properties in p
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(GeV/c) (GeV/c) T T p < 40 20
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wheredσm(N +N → h+X)/dp Tdy isth
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R AA 0.6 0.5 0.4 0.3 0.2 0.1 0 0.5
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Here D is the diffusion coefficient
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The effect of triangular flow in je
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When both trigger and associated pa
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The first Z boson measurement in th
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Figure 1: Dimuon invariant mass spe
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2. V. Kartvelishvili, R. Kvatadze a
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esolution [ µ m] ! r 0 d 300 250 2
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Figure 5: Differential transverse m
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Figure 1: Average nuclear modificat
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Another way of using direct photons
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Pb R g 2 Nuclear Modifications for
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q T 1/R AA 1.6 1.4 1.2 1 0.8 LO Fra
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] 2 > [g/cm max
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Methods (a) and (c) constrain the e
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EXPERIMENTAL SUMMARY: ENTERING THE
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ut also for valence quarks involved
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The sensitivity to Standard Model H
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Figure 10: Top pair mass spectrum m
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Figure 13: Particle densities (left
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4 Low energy precision Spectroscopy
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asymmetries associated to Bd and Bs
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XLVIth Rencontres de Moriond QCD an
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