TH - LPCC Summer Institute on LHC Physics - THLPCC11

1 Aug 2011, 08:00 → 2 Sept 2011, 18:00 Europe/Zurich

TH Theory Conference Room (CERN)

The TH-LPCC Summer Institute on LHC Physics

This 5-week Institute is co-organized by CERN's Theory Group and by the LHC Physics Centre at CERN.

Format: The first two weeks of the Institute will be focused on SM and QCD while the last three weeks will be devoted to BSM, with a special emphasis on model building during the first two, and on the status of the searches at the LHC in the last one. In particular, during this week the Institute will host the first meeting of the Workshop on "Implications of LHC results for TeV-scale physics". This is open for participation to those not registered at the Institute, at
https://indico.cern.ch/conferenceDisplay.py?confId=141983

Registration: The attendance will be limited to around 40 people per week. There is no registration fee. Registration will be open until Jan. 31, 2011.

Local Organization: Stefano Frixione, Gian Giudice, Christophe Grojean, Michelangelo Mangano, Gavin Salam, Peter Skands and Geraldine Servant.

The meeting will be partly supported by

• the CERN-TH unit
• the LHC Physics Centre at CERN
• the Marie Curie Initial Training Network "UNILHC" PITN-GA-2009-23792,
• and the ERC Advanced Grant "MassTeV" 226371.

Participant List

• THLPCC11_ParticipantList_15August2011.pdf
• THLPCC11_ParticipantList_30July2011.pdf
• THLPCC2011_ParticpantList.pdf

Monday, 1 August

14:00 → 18:00 Use of collider data for PDF analyses

slides jet_scales.pdf

14:00 PDFs at the LHC -- some issues, comments and questions

Speaker: Dr Robert Samuel Thorne (University College London-University of London)

Slides cern2011.pdf

14:50 The impact of present and future LHC data on parton distributions

Speaker: Alberto Guffanti (University of Freiburg)

Slides LOpdfs4MC.pdf LPCC_01082011.pdf

15:40 PDFs with the LHeC

Speaker: Max Klein

Slides pdfLPCC11mk.pdf

Tuesday, 2 August

14:00 → 18:00 Review of new LHC results presented at EPS

See
https://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=135933

Link to agenda https://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=135933

Wednesday, 3 August

10:30 → 11:30 QCD results from CMS

Speaker: Konstantinos Kousouris (Fermi National Accelerator Lab. (Fermilab))

Slides CERN_TH_Insitute_2011_HardQCD.pdf

11:30 → 12:00 Discussion

14:00 → 15:00 TH colloquium: "Precision predictions for Higgs production" (M.Grazzini)

Link to agenda https://indico.cern.ch/conferenceDisplay.py?confId=147485

Thursday, 4 August

09:00 → 11:30 Recent shower MC developments

09:00 Status of the POWHEG box

Speaker: Paolo Nason

Slides Nason-TH-INST-2011.pdf

09:35 Status of aMC@NLO

Speaker: Rikkert Frederix

Slides frederix.pdf

10:10 Status of Herwig++

Speaker: Mike Seymour (School of Physics and Astronomy Schuster Laboratory-University)

Slides CERNHW.pdf

10:45 The Krakow NLO Parton Shower project

Speaker: Maciej Skrzypek (Henryk Niewodniczanski Inst. Nucl. Physics, PAN-Unknown-Unknown)

Slides CERNAug11MS.pdf

11:10 Coffee break

11:30 → 12:30 Collider Cross Talk

11:30 Status and Progress of Pythia8

Speaker: Torbjorn Sjostrand (Department of Theoretical Physics-Lunds Universitet)

Link to agenda https://indico.cern.ch/conferenceDisplay.py?confId=147638

Friday, 5 August

09:00 → 12:00 Open forum for short contributions

09:00 On the Integrand-Reduction Method for Two-Loop Scattering Amplitudes

Speaker: Pierpaolo Mastrolia

Slides mastrolia_cern_050811.pdf

09:30 Herwiri1.031: A New Approach to Parton Shower MC's for Precision QCD for the LHC

Speaker: Bennie Ward (High Energy Physics Group-Department of Physics-Baylor Universi)

Slides NewAPP-Prtn-SH-08-05-11.pdf

Monday, 8 August

14:00 → 18:00 Progress in NNLO calculations

14:00 Status of the antenna approach to NNLO calculations

Speaker: Nigel Glover

Slides talk.pdf

14:30 Non-linear mapping of singularities at NNLO and the H->b bbar width

Speaker: Franz Herzog

Slides cerntalk.pdf

15:00 The singular behavior of one-loop massive QCD amplitudes with one external soft gluon, or calculating the real-virtual corrections at NNLO with massive quarks

Speaker: Alexander Dimitrov Mitov (CERN)

Slides Mitov.pdf

15:30 Order epsilon and epsilon^2 terms of one-loop amplitudes in NNLO calculations

Speaker: Stefan Weinzierl

Slides weinzierl_nlo_nlo.pdf

16:00 Coffee break

16:30 Integration of subtraction terms at NNLO

Speaker: Gabor Somogyi (DESY, Zeuthen)

Slides Int-NNLO.pdf

17:00 Two-loop amplitudes and integrals in N=4 SYM

Speaker: Vittorio Del Duca (INFN sezione di Frascati)

Slides amps&WL_cern.pdf

17:30 Recent results on t-tbar cross sections at NNLL/NNLO

Speaker: Pietro Falgari

Slides THLPCC_falgari.pdf

Tuesday, 9 August

09:00 → 18:00 RIVET tutorial

https://indico.cern.ch/conferenceDisplay.py?confId=145745

Link to agenda https://indico.cern.ch/conferenceDisplay.py?confId=145745

Wednesday, 10 August

09:00 → 12:00 LO and NLO Matrix-element aspects of MC simulations

09:00 A new formalism for multileg LO matching

Speakers: Juan Jose Lopez Villarejo (Unknown), Peter Skands (CERN)

Slides 11-vincia-aug.pdf

09:40 Applications of POWHEG to ttbat+X (X=jet,H,QQbar,...)

Speaker: Zoltan Laszlo Trocsanyi (Institute of Experimental Physics-University of Debrecen)

Slides LPCC.pdf

10:20 Combining NLO corrections to production and decay in the WH process

Speaker: Julián Cancino (ETH Zürich)

Slides 110810_TH-LPCC_JC.pdf

11:00 Coffee break

14:00 → 15:00 TH colloquium: "Event-generator physics for the LHC" (M.Seymour)

https://indico.cern.ch/conferenceDisplay.py?confId=148458

Link to agenda https://indico.cern.ch/conferenceDisplay.py?confId=148458

16:00 → 17:00 QCD results from ATLAS

Speaker: Mario Campanelli (University College London-University of London)

Slides semtheoryqcd.pdf

17:00 → 17:30 Discussion

Thursday, 11 August

11:00 → 12:00 Collider Cross Talk: Search for dilepton resonances at the LHC

https://indico.cern.ch/conferenceDisplay.py?confId=147455

Link to agenda https://indico.cern.ch/conferenceDisplay.py?confId=147455

14:00 → 17:30 W/Z+jets

14:00 W/Z+jets: status and open issues

Speaker: Michelangelo Mangano (CERN)

Slides wjets-review.pdf

14:40 NLO W/Z+jets with BlackHat and Sherpa

Speaker: David Kosower

Slides Kosower.pptx

15:20 W/Z+jets results with Sherpa

Speaker: Jan-Christopher Winter

Slides vjs.cern.pdf

16:00 Study of Wjj at NLO+PS using aMC@NLO

Speaker: Rikkert Frederix

Slides frederix.pdf

16:40 Using gamma+jets Production to Calibrate the Standard Model Z(nunu)+jets Background to New Physics Processes at the LHC

Speaker: James Stirling (Cambridge University)

Slides Stirling_THLPCC2011.pdf Stirling_THLPCC2011.pptx

Friday, 12 August

09:00 → 12:00 Open forum for short contributions

09:00 Gluon-Gluon contributions to WW production and Higgs interference effects

Speaker: Ciaran Williams (IPPP)

Slides LPCC_ggWW.pdf

09:30 Precise predictions for Higgs production Beyond the Standard Model

Speaker: Dr Elisabetta Furlan (BNL)

Slides Furlan_08_12.pdf

09:50 Colour-friendly FKS subtraction

Speaker: Stefano Frixione (CERN)

Slides colour.pdf

Tuesday, 16 August

10:30 → 11:00 Coffee break

11:00 → 11:20 N-subjettiness

A new jet shape to identify boosted hadronic objects (W/Z/H/top/etc).

Speaker: Jesse Thaler

Slides Thaler.pdf

11:20 → 11:40 Measuring invisible particle masses using a single short decay chain

We discuss the possibility of mass measurements for a SUSY-like decay chain with only 2 visible particles. This was never attempted and thought to be impossible before.

Speaker: Hsin-Chia Cheng

Slides Cheng.pdf

11:40 → 12:00 New Vector Boson Near the Z-pole and the Puzzle in Precision Electroweak Data

We show that a Z' with suppressed couplings to the electron compared to the Z-boson, with couplings to the b-quark, and with a mass close to the mass of the Z-boson, provides an excellent fit to forward-backward asymmetry of the b-quark and R_b measured on the Z-pole and $\pm 2$ GeV off the Z-pole, and to A_e obtained from the measurement of left-right asymmetry for hadronic final states.

Speaker: Radovan Dermisek

Slides Dermisek.pdf

12:00 → 12:20 CDF dijet excess

how to look for the CDF dijet excess at the LHC (IF it's from rho_T -> W pi_T).

Speaker: Kenneth Lane (Boston University)

Slides Lane.pdf

Thursday, 18 August

10:30 → 11:00 Coffee Break

14:00 → 14:20 Natural supersymmetry at the LHC

Motivated by natural electroweak symmetry breaking in supersymmetry, an effective model with light stop/higgsino and very light gravitino is considered. The implication of the LHC 1 fb^-1 data is also discussed.

Speaker: Hyung Do Kim (Unknown)

Slides HDKim.pdf

14:20 → 14:40 Tree-level Gauge Mediation: Viable and Predictive Tree-level SUSY breaking

I will discuss a scenario in which SUSY breaking is communicated by heavy vectorfields at tree-level. This gives rise to a simple and motivated model of SUSY breaking with peculiar predictions for sfermion mass ratios.

Speaker: Robert Ziegler (Technische Universitat Munchen)

Slides Ziegler.pdf

14:40 → 15:00 Model building using Lie-point symmetries

We describe the Lie-point symmetry method and how it can be used to systematically search for all continuous symmetries and parameter relationships in a classical field theory.

Speaker: Damien George

Slides George.pdf

15:00 → 15:20 Physical Predictions in the Quantum Multiverse

I describe how quantum mechanics plays a crucial role in defining probabilities (the "measure") in the multiverse, and how the eternally inflating multiverse leads to dramatic change of our view on spacetime and gravity. The latest result on the distribution of the cosmological constant is also presented. The talk is based mainly on arXiv:1104.2324 (but also arXiv:1107.3556).

Speaker: Yasunori Nomura

Slides Nomura.pdf

Friday, 19 August

10:30 → 11:00 Coffee Break

11:00 → 11:20 Implications for the Constrained MSSM from CMS and Dark Matter Searches - A Bayesian Approach

Speaker: Leszek Roszkowski

Slides Roszkowski.pdf

11:20 → 11:40 MSSM Higgs physics at the LHC

I'll discuss the reach of the 7 TeV LHC in the search for Standard Model-like Higgs bosons in different benchmark scenarios, as well as the complementarity of the standard searches with non-standard Higgs searches. Searches from SUSY Higgs bosons from cascade decays will also be discussed in some detail.

Speaker: Carlos Wagner (University of Chicago and Argonne National Laboratory)

Slides Wagner.pdf

11:40 → 12:00 The fine-tuning and phenomenology of the generalised NMSSM

We determine the degree of fine-tuning needed in a generalised version of the NMSSM that follows from an underlying Z4 or Z8 R-symmetry. We find that it is significantly less than is found in the MSSM or NMSSM and remarkably the minimal fine-tuning is achieved for Higgs masses of 130 GeV - 140 GeV.

Speaker: Kai Schmidt-Hoberg (University of Oxford)

Slides Schmidt-Hoberg.pdf

12:00 → 12:20 Extended Higgs sector at the LHC Run-I

In this talk I will discuss the exclusion and detectability prospects of Higgs bosons in three models: a) the Lee Wick Standard Model (arXiv:1104.3496), b) Beyond Minimal Supersymmetric Standard model (BMSSM) and c) Higgs portal models. We discuss the collider bounds on this model coming from LEP, Tevatron and LHC data.

Speaker: José Francisco Zurita (University of Zurich)

Slides Zurita.pdf

Tuesday, 23 August

10:30 → 11:00 Coffee Break

11:00 → 11:20 SUSY Monojets and Precision Coupling Determinations

squark--neutralino coupling at the high luminosity run of the LHC with some precision by analyzing a sample of high p_T monojet events.

Speaker: Howard Haber (Santa Cruz Institute for Particle Physics (SCIPP))

Slides Haber.pdf

11:20 → 11:40 Beyond mSUGRA

Speaker: Riccardo Barbieri (Dipartimento di Fisica)

Slides Barbieri.pdf

11:40 → 12:00 Making the slepton a Higgs with a U(1)_R lepton number

Speaker: Thomas Gregoire (Carleton University)

Slides Gregoire.pdf

12:00 → 12:20 Two-Higgs-doublet interpretation of a small Wjj excess

I describe how a Wjj excess could arise in the 2HDM context, related signals and the theoretical issues that require that the excess be smaller than the CDF claim.

Speaker: John Gunion (UC Davis)

Slides Gunion.pdf

Wednesday, 24 August

14:00 → 15:00 Conformal Field Theories as Building Blocks of Nature

Speaker: Vyacheslav Rychkov (LPT, ENS-Paris)

Slides Rychkov.pdf

Thursday, 25 August

10:30 → 11:00 Coffee Break

11:00 → 12:00 Latest H->WW Results from ATLAS and CMS

Collider Cross Talk. Abs:The search for the Standard Model-like Higgs boson via the decay into two W bosons is presented, based on data collected in 2011. The search in the dilepton final state is more powerful than any current result for intermediate mass Higgs bosons and has the highest sensitivity of the Higgs searches at the LHC. It is complemented by semi-leptonic WW decays which give good performance in the region of high mass. Recent results by ATLAS and CMS will be discussed and the current limits on the Higgs mass will be shown.

Speakers: Dmytro Kovalskyi, Elliot Lipeles

14:00 → 14:20 Searching for the Higgs boson by calling all angles

we discuss the possibility of improving the sensitivity of Higgs boson searches by including all available angular variables.

Speaker: Ian Low (Argonne National Lab/Northwestern Univ)

Slides Low.pdf

14:20 → 14:40 Invisible Higgs

I discuss a few simple models for invisible Higgs decays, and a method to constrain these models using the h \to ZZ \to 4l lineshape

Speaker: Mr Pedro Schwaller (Zurich University)

Slides Schwaller.pdf

14:40 → 15:00 If no Higgs, then what?

Speaker: Adam Falkwoski (LPT Orsay)

Slides Falkowski.pdf

15:00 → 15:20 Solving the Flavor Problem in Composite Higgs Models

Speaker: Michele Redi

Slides Redi.pdf

15:20 → 15:40 SUSY Signals of CP violation in Higgs and Flavor Physics

Speaker: Marcela Carena

Slides Carena.pdf

Friday, 26 August

10:30 → 11:00 Coffee Break

11:00 → 11:20 Relating Proton Decay and Monojets through Asymmetric Dark Matter

n this talk I will discuss a scenario for asymmetric dark matter where the stable ADM states carry a (generalized) baryon number and can destroy nucleons through inelastic scattering, the rate for which is closely related to the cross section for monojet signals at the Tevatron and the LHC.

Speaker: Prof. David Morrissey (Michigan State University)

11:20 → 11:40 Light Dark Matter and the Electroweak phase transition in the NMSSM

Speaker: Dr Nausheen Shah (Fermi Lab.)

11:40 → 12:00 Counting dark matter particles in LHC events

We argue that counting the number of invisible particles in missing energy events at the LHC can give us insight into the nature of dark matter, and explain how we might do this in practice.

Speaker: Rakhi Mahbubani

12:00 → 12:20 Higgs portal inflation

We study the phenomenology of the Higgs-singlet mixed inflation for the extended Higgs sector with a singlet scalar in the SM

Speaker: Hyun Min Lee

12:20 → 12:40 Light Higgsinos as Heralds of Higher-Dimensional Unification

Speaker: Felix Bruemmer (DESY)