MPI@LHC 2012, Workshop on Multi-Parton Interactions at the LHC

3 Dec 2012, 09:00 → 7 Dec 2012, 18:00 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Hannes Jung (Deutsches Elektronen-Synchrotron), Judith Katzy (Deutsches Elektronen-Synchrotron), Michelangelo Mangano (CERN), Peter Skands (CERN)

Welcome to the fourth International Workshop on Multiple Partonic Interactions at the LHC. To join the mailing list and receive future information on the meeting, follow this link:
http://simba3.web.cern.ch/simba3/SelfSubscription.aspx?groupName=mpi-2012

 

The aim of this workshop on Multiple Partonic Interactions (MPI) at the LHC is to raise the profile of MPI studies, summarising the legacy from the phenomenology at previous hadron colliders, reviewing the LHC results and fostering contact between the theoretical and experimental communities.

MPI are experiencing a growing popularity and are widely invoked to account for observations that cannot be explained otherwise: the activity of the Underlying Event, the rates for multiple heavy flavour production, the survival probability of large rapidity gaps in hard diffraction, etc. At the same time, the implementation of MPI effects in Monte Carlo generators is quickly proceeding at an increasing level of sophistication and complexity, which can have far reaching implications for LHC physics. The ultimate ambition of this workshop is to promote MPI as a unifying concept between apparently distinct lines of research, to profit from experimental progress in order to constrain their implementation in models, and to evaluate their impact on the LHC physics program.

Four working groups have been formed, to prepare, through 2012, material to be discussed at the Workshop:

1. MPI and diffraction. Conveners: M.Poghosyan (ALICE), A.Pilkington (ATLAS), N.Cartiglia (CMS), D.Volyanskyy (LHCb), F.Ferro (TOTEM)
2. MPI and small-x. Conveners: H.Abramowicz (ATLAS), H.Jung (CMS)
3. MPI and double-parton scattering. Conveners: E.Dobson (ATLAS), A.Moraes (ATLAS), P.Bartalini (CMS), X.Janssen (CMS), R.Muresan (LHCb), D.Treleani
4. MPI and MC development: J.Katzy, F.Krauss, Z.Nagy, T.Rogers (see http://mpi12-mc.desy.de/)

A preliminary meeting, organized at Tel Aviv University, is scheduled to take place on Oct 14-18: http://physics.tau.ac.il/mpitau/

For a compilation of commented references to relevant papers on the theory and experimental results on MPIs, see
http://ppewww.physics.gla.ac.uk/~moraes/MPI/Theory.html
http://ppewww.physics.gla.ac.uk/~moraes/MPI/Experiment.html

Previous meetings in this series:
MPI@LHC'11 DESY, Hamburg, Germany
MPI@LHC'10 Glasgow, Scotland
MPI@LHC'08 Perugia, Italy

Information on access to CERN and laptop registration is available from http://lpcc.web.cern.ch/LPCC/index.php?page=visit

Monday 3 December

Inelastic cross sections (NOTICE CHANGE OF MTG ROOM)

1 CMS: New results on cross section and diffraction

Speaker: Anna Zsigmond (Hungarian Academy of Sciences (HU))

Slides MBUE_CrossSection_AZs_final.pdf

2 ALICE: pp Inelastic and diffractive cross-section measurements

Speaker: Jean-Pierre Revol (CERN)

Slides Revol.MPI4.Dec.3.2012.pdf

3 TOTEM: Inelastic cross section and forward particles multiplicity

Speaker: Giuseppe Latino (Sezione di Pisa (IT))

Slides TOTEM_InelXsecFwdCh_Latino_MPI2012.pdf TOTEM_InelXsecFwdCh_Latino_MPI2012.ppt

4 ATLAS: Inelastic cross section measurements

Speaker: Oldrich Kepka (Acad. of Sciences of the Czech Rep. (CZ))

Slides kepka_mpi_totcross.pdf

5 Coherence and saturation the solution of KGBJS equation and resummed BK

Speaker: Dawid Toton

Slides solution-of-resummed-2.pdf

6 Unintegrated gluon distribution and saturation effect in p-p at LHC energies

Speaker: Gennady Lykasov (Joint Inst. for Nuclear Research (RU))

Slides LYKASOV_MPI12.pdf LYKASOV_MPI12.ppt

11:10 Coffee break

First pA results

7 CMS: Two-particle correlations in pPb collisions

Speaker: Yen-Jie Lee (CERN)

Slides 20121205-MBUE2012_yenjie-v2.pdf 20121205-MBUE2012_yenjie-v2.ppt

8 LHCb: First look at the pA pilot run

Speaker: Michael Schmelling (Max-Planck-Gesellschaft (DE))

Slides lhcb.pdf

13:00 Lunch break

MB event properties

9 LHCb: Review of latest MB results

Speaker: Andrea Contu (INFN CAGLIARI (IT))

Slides AContu_MPI@LHC2012.pdf

10 CMS: New results on multiplicites and particle spectra

Speaker: Ferenc Sikler (Wigner RCP, Budapest (HU))

Slides sikler_mbuewg_2012.pdf

11 CMS: New results on underlying event physics

Speaker: Mr Mohammed Zakaria (University of Florida (US))

Slides MZakaria_2012_12_03.pdf

Jets and UE properties

12 ALICE: Measuring 'minijets' using two-particle angular correlations

Speaker: Eva Sicking (CERN)

Slides alice_evasicking.pdf

13 ATLAS: Jets, multijets, jet substructure

Speaker: Rebecca Thalatta Chislett (University of London (GB))

Slides MPI@LHCtalk2.pdf

14 CMS: Measurements of the energy flow and UE behaviour at forward rapidities

Speaker: Hans Jozef H Van Haevermaet (University of Antwerp (BE))

Slides MPI2012_underlyingevent_v2.pdf

15 ATLAS UE results

Speaker: Deepak Kar (University of Glasgow (GB))

Slides ue-mpilhc.pdf

17:30 Welcome drink

Tuesday 4 December

Monte Carlo

16 Overview of MC models of MPI

Speaker: Andrzej Konrad Siodmok (KIT - Karlsruhe Institute of Technology (DE))

Slides Siodmok_CERN_04_12_12.pdf

17 MPI in EPOS and tuning

Speaker: Dr Tanguy Pierog (KIT)

Slides EPOSLHC_pierog.pdf

18 Sherpa MPI including tuning

Speaker: Korinna Christine Zapp

Slides cern-mpi_1212.pdf

19 ATLAS tunes for MPI

Speaker: Sebastian Wahrmund (Technische Universitaet Dresden (DE))

Slides 2012-12-03_MPI_CERN_ATLASTuning_SebastianWahrmund.pdf

10:50 Coffee break

20 CMS: Measurement of strangeness production in the underlying event and comparison with simulations

Speaker: Tomas Hreus (Universite Libre de Bruxelles (BE))

Slides hreus_mpi.pdf

21 Inclusive observables of MPI

Speaker: Richard Dryden Field (University of Florida (US))

Slides MPI@LHC_RickField_12-4-12.pdf MPI@LHC_RickField_12-4-12.ppt

22 A model of diffraction

Speaker: Konstantin Goulianos (The Rockefeller University)

Slides MPI@LHC_dino.pdf

23 Recent developments on diffraction in pythia8

Speaker: Robert Ciesielski (Rockefeller University (US))

Slides MPI.diffractionPYTHIA8.ciesielski.pdf

13:00 Lunch break

Diffraction

24 Diffraction and MPI

Speaker: Eugene Levin

Slides MPICERN-tr.pdf

25 Total, elastic and diffractive cross sections in TOTEM

Speaker: Jan Kaspar (Acad. of Sciences of the Czech Rep. (CZ))

Slides (corrected) mpi_2012_kaspar.pdf

26 ATLAS: MPI aspects of Rapidity gaps and forward Eflow

Speaker: Peter Alexander Wijeratne (University College London (UK))

Slides PAW_MPILHC_041212.pdf

27 Diffraction at CMS

Speaker: Sercan Sen (University of Iowa (US))

Slides MPI2012_diffCMS_sercan.pdf

15:55 Coffee break

28 Soft and diffractive physics at LHCb

Speaker: Dermot Anthony Moran (University of Manchester (GB))

Slides Soft%20and%20diffractive%20physics%20at%20LHCb.pdf

29 Recent results from the Tevatron on exclusive and diffractive production

Speaker: Christina Mesropian (The Rockefeller University)

Slides ChristinaMesropian_MPI2012.pdf

30 Recent results from HERA on inclusive diffraction

Speaker: Paul James Laycock (University of Liverpool (GB))

Slides laycock_MPI.pdf

Wednesday 5 December

31 LHCC open session

Agenda https://indico.cern.ch/conferenceDisplay.py?confId=216930

13:00 Lunch break

Small x

32 Small-x issues, overview and connection to MPI

Speaker: Leif Lönnblad (Lund University (SE))

Slides MPI2012.pdf

33 MPI and High Energy QCD Showers

Speaker: Francesco Hautmann (Institute of Theoretical Physics)

Slides tk_mpicern_dec5.pdf

34 H1: final states and forward physics at HERA

Speaker: Guenter Grindhammer (MPI Muenchen)

Slides gg_mpi@lhc-1.pdf

17:00 Coffee break

35 ATLAS: event shapes

Speaker: Claire Adam Bourdarios (Universite de Paris-Sud 11 (FR))

Slides TalkMPI-ClaireAdampdf.pdf

36 CMS: forward jets and multiparton interactions

Speaker: Ilknur Hos (Cukurova University (TR))

Slides FwdJet_FwdandCentJets_DijetKfactor_MPIDecember2012_FinalDraft.pdf

37 LHCb: Forward production studies at LHCb

Speaker: Patrick Spradlin (University of Glasgow (GB))

Slides 2012.12Dec.05_LHCWorkshop.pdf

Thursday 6 December

Double parton scattering, part 1

38 Direct Measurement of DPS at ATLAS

Speaker: Iftach Sadeh (Tel Aviv University (IL))

Slides w2jTalk.pdf

39 LHCb DPS measurements

Speaker: Vanya Belyaev (ITEP Institute for Theoretical and Experimental Physics (RU))

Slides 20121206_MPIatLHC_DPSatLHCb.pdf 20121206_MPIatLHC_DPSatLHCb.pptx

40 ALICE: multiplicity dependence of open charm production

Speaker: Zaida Conesa Del Valle (CERN)

Slides ZaidaMPI12_nobackup.pdf

41 EPOS2

Speaker: Klaus Werner

Slides cern.pdf

10:45 Coffee break

42 DPS in pA

Speaker: Urs Wiedemann (CERN)

Slides MPIwiedemann.pdf MPIwiedemann.ppt

43 A model of multi parton interactions

Speaker: Daniele Treleani (University of Trieste)

Slides CERN_MPI_12.pdf

44 Splitting diagrams in double logarithm approximation of pQCD

Speaker: Alexandre Snigirev (M.V. Lomonosov Moscow State University (RU))

Slides mpi12-snig.pdf

45 Kinematic correlations in double J/psi production

Speaker: Nikolay Zotov (M.V. Lomonosov Moscow State University (RU))

Slides talk_mpi12.pdf

46 Double c-cbar production

Speaker: Antoni Szczurek (I)

Slides szczurek_mpi.pdf

Free time for informal discussions

Friday 7 December

Double parton scattering, part 2

47 MPI theory overview

Speaker: Jonathan Gaunt (University of Cambridge)

Slides MPI@LHC_2012_talk_3.pdf

48 Double parton interactions, correlations and underlying event

Speaker: Mark Strikman

Slides mpi12.pdf

49 Double parton interactions

Speaker: Yuri Dokshitzer

Slides MPI-2012.pdf

10:40 Coffee break

50 CMS DPS results

Speaker: Ramandeep Kumar (Panjab University (IN))

Slides mpi12@lhc_v4_Dec7.pdf

51 Extracting sigma_eff from the CDF measurement

Speaker: Miroslav Myska

Slides 2012_MPI_workshop_myska.pdf

52 Angular modulations in double parton scattering

Speaker: Tomas Kasemets (DESY)

Slides MPI2012.pdf

53 A Model Construction of Self-similarity based Double Parton Distribution Functions for proton-proton collision at LHC

Speaker: Akbari Jahan

Slides MPI_2012_A_Jahan.pdf

54 Double Parton Scattering Contributions in W bb and Z b b at the LHC

Speaker: Ed Berger (Argonne National Laboratory (US))

Slides CERN_MPI_Dec2012.pdf