GDR Terascale@Palaiseau

2 juin 2014, 11:00 → 4 juin 2014, 16:10 Europe/Paris

Ecole Polytechnique

Christophe Ochando (LLR), Dirk Zerwas (LAL Orsay), Gilbert Moultaka (L2C Montpellier, UMR5221-UM2/INP/CNRS), Sylvaine Pieyre (LLR communication)

We are looking forward to welcome you at the LLR, Palaiseau, from June 2 to 4 for the meeting of the GDR Terascale. Please register as soon as possible, the registration deadline is Mai 25, 2014.

Your contribution to the programme is welcome. Please contact the coordinators of the corresponding session if you would like to give a talk:

Higgs: Sandrine Laplace, Christophe Ochando, Pietro Slavich
BSM: Marie-Helene Genest, Stephane Lavignac, Ana Teixeira, Patrice Verdier
Dark Universe: Emmanuel Moulin, Marco Cirelli
Tools: Benjamin Fuks and Nikola Makovec

You can find their e-mail addresses on the Web-page of the GDR Terascale. The GDR will offer the lunches on Monday, Tuesday and Wednesday as well as the dinner on Tuesday evening.

Transparents acces_conference.jpg

lundi 2 juin

11:00 → 14:30 Registration

14:30 → 14:45 Welcome

Présidents de session: Dirk Zerwas (LAL Orsay), Gilbert Moultaka (L2C Montpellier, UMR5221-UM2/INP/CNRS)

14:45 → 15:55 Higgs

Présidents de session: Dr Christophe Ochando (LLR), Dr Pietro Slavich (LPTHE Paris), Mme Sandrine Laplace (LPNHE)

14:45 A tight constraint on the Higgs width from off-shell production and decay to ZZ

Orateur: M. Claude Charlot (LLR-Ecole Polytechnique)

Slides 20140602CharlotHiggsWidthTalk.ppt

15:10 Constraints on new phenomena through Higgs coupling measurements

Orateur: M. David Delgove (Laboratoire de l'accélérateur linéaire)

Transparents GDR_terascale_DDelgove.pdf

15:35 Introduction to the FCC project

Orateurs: M. Clement Helsens (CEA Saclay), Dr Clement helsens (CERN)

Transparents FCC-hh_helsens.pdf

15:55 → 16:25 Coffee Break

16:25 → 18:00 Higgs

Présidents de session: Dr Christophe Ochando (LLR), Dr Pietro Slavich (LPTHE Paris), Mme Sandrine Laplace (LPNHE)

16:25 Exotic Higgs decays at the LHC

Orateur: M. Adam Falkowski (LPT Orsay)

16:45 boosted Higgs decays into gamma and a Z in the NMSSM

Orateur: Vincent Bizouard (LAPTh)

17:10 Search for the resonant production of two Higgs bosons in the gammagamma bbbar final state at CMS

Orateur: Dr Serguei Ganjour (CEA/Saclay/IRFU/SPP)

Transparents GDRTerascale_020614.pdf

17:30 Review of recent Higgs results from ATLAS

Orateur: Giovanni Marchiori (LPNHE Paris)

Slides Recent_Higgs_results_from_ATLAS.pdf

18:00 → 20:00 Conseil de Groupement

Présidents de session: Dirk Zerwas (LAL Orsay), Gilbert Moultaka (L2C Montpellier, UMR5221-UM2/INP/CNRS)

Agenda https://indico.in2p3.fr/conferenceDisplay.py?confId=10178

mardi 3 juin

09:00 → 10:05 Higgs

Présidents de session: Dr Christophe Ochando (LLR), Dr Pietro Slavich (LPTHE Paris), Mme Sandrine Laplace (LPNHE)

09:00 H->tautau in ATLAS

Orateur: Dr Dimitri Varouchas (LPNHE)

Transparents Htautau_GDR_June2014.pdf

09:20 H->tautau in CMS

Orateurs: M. Olivier Davignon (LPNHE), Dr Olivier Davignon (Laboratoire Leprince-Ringuet)

Transparents Davignon_HiggsTauTau_GDRTerascale_03_06_14.pdf

09:40 Search for additional resonance in diphoton channel

Orateur: Nicolas Berger (LAPP)

Slides GDR-20140604.odp.pdf

10:05 → 11:05 Methods & Tools

Présidents de session: Benjamin Fuks (IPHC Strasbourg / CERN), M. Nikola Makovec (LAL Orsay)

10:05 VBF@NLO

Orateur: Dr Michael Rauch (Univ. Karlsruhe, KIT)

Slides Rauch_GDR.pdf

10:35 News from SmodelS

Orateur: Ursula Laa (Hephy Vienna, LPSC Grenoble)

Transparents laa_gdr.pdf

11:05 → 11:30 Coffee Break

11:30 → 12:30 Methods & Tools

Présidents de session: Benjamin Fuks (IPHC Strasbourg / CERN), M. Nikola Makovec (LAL Orsay)

11:30 SFitter and the NMSSM

Orateur: Anja Butter (LAL Orsay)

Transparents A_Butter_SFitter_and_the_NMSSM.pdf

12:00 News from MadAnalysis 5

Orateur: M. Eric CONTE (GRPHE - Université de Haute-Alsace)

Slides MadAnalysis_Terascale2014.pdf

12:30 → 13:50 Lunch Break

13:50 → 14:40 Methods & Tools

Présidents de session: Benjamin Fuks (IPHC Strasbourg / CERN), M. Nikola Makovec (LAL Orsay)

13:50 Towards a public analysis database for LHC new physics searches using MadAnalysis 5

Orateur: Dr Guillaume Chalons (LPSC-IN2P3-CNRS)

Transparents chalons_LLR.pdf

14:20 Lilith : a new public code for fitting the Higgs likelihood

Orateur: Jérémy Bernon (LPSC)

Transparents GDR@Palaiseau2014.pdf

14:40 → 16:10 BSM

Présidents de session: Ana M. Teixeira (LPC Clermont), Marie-Hélène Genest (LPSC), Dr Patrice Verdier (IPN Lyon), Dr Stéphane Lavignac (SPhT Saclay)

14:40 The slow gravitino

Orateur: Dr Karim Benakli (CNRS)

Slides SlowGravitino2.pdf

15:10 A new flavour imprint of SU(5)-like Grand Unification and its LHC signatures

Orateurs: Yannick STOLL (Lapth Annecy Le Vieux), M. yannick stoll (LAPTh)

Slides talk.pdf

15:40 SUSY models for ATLAS and CMS multilepton analysis

Orateur: Mlle Karen De Causmaecker (VUB)

Slides karen_GDR.pdf

16:10 → 16:30 Coffee Break

16:30 → 18:30 BSM

Présidents de session: Ana M. Teixeira (LPC Clermont), Marie-Hélène Genest (LPSC), Dr Patrice Verdier (IPN Lyon), Dr Stéphane Lavignac (SPhT Saclay)

16:30 Sleptons and charginos direct searches in 2 leptons at ATLAS

Orateur: Thomas Serre (CPPM)

Transparents GDR_0306_Thomas.pdf

17:00 ATLAS search for SUSY with same-sign leptons and jets

Orateur: Otilia Anamaria Ducu (CPPM / IFIN-HH)

Transparents Ducu_Otilia_Inclusive_SS_ATLAS_CMS.pdf

17:30 Jet substructure and top tagging to search for new physics

Orateur: Dr Pierre-Antoine Delsart (LPSC)

18:00 Stop searches with boosted tops and transverse variables.

Orateur: Dr Dipan Sengupta (LPSC, Grenoble)

20:30 → 23:00 Dinner

mercredi 4 juin

09:00 → 10:30 BSM

Présidents de session: Ana M. Teixeira (LPC Clermont), Marie-Hélène Genest (LPSC), Dr Patrice Verdier (IPN Lyon), Dr Stéphane Lavignac (SPhT Saclay)

09:00 Resurrecting the minimal renormalizable supersymmetric SU(5) model

Orateur: Timon Mede

Slides Mede.pdf

09:30 LFV Higgs decays in the inverse seesaw

Orateur: Dr Cedric Weiland (IFT UAM/CSIC)

Slides GDRterascalePalaiseau.pdf

10:00 Flavoured scalar triplet leptogenesis

Orateur: Benoit Schmauch (CEA Scalay)

10:30 → 10:55 Coffee Break

10:55 → 12:30 Dark Universe

Présidents de session: Dr Emmanuel Moulin (IRFU/SPP), M. Marco CIRELLI (CNRS IPhT Saclay)

10:55 Mainly axion cold dark matter from natural SUSY

By eschewing fine-tuning from the electroweak and QCD sectors of supersymmetry (natural supersymmetry or SUSY), and by invoking the Kim-Nilles solution to the SUSY mu problem, one is lead to models wherein the dark matter is comprised of a mixture of axions and higgsino-like WIMPs. Over a large range of Peccei-Quinn breaking scale f_a~ 10^9-10^{12} GeV, one then expects about 90-95% axion dark matter. In such a scenario, both axion and WIMP direct detection may be expected.

Orateur: Prof. Eung Jin Chun (KIAS Seoul)

11:40 Recent results of the XENON100 experiment and future goals of the XENON project

Orateur: Dr Julien Masbou (SUBATECH)

Transparents 2014-06-03_GDR_Terascale_XENON_Program.pdf

12:30 → 14:00 Lunch

14:00 → 16:00 Dark Universe

Présidents de session: Dr Emmanuel Moulin (IRFU/SPP), M. Marco CIRELLI (CNRS IPhT Saclay)

14:00 BICEP2 and its implications for cosmology and particle physics

In this talk, after a very brief description of inflation and its predictions for the properties Cosmic Microwave Background radiation, I will discuss the results by the BICEP2 collaboration, that recently claimed detection of the so-called primordial B modes in the CMB. In particular, my talk will focus on the implications that such a detection would have for inflationary model building and for particle physics.

Orateur: Dr Lorenzo Sorbo (University of Massachusetts, Amherst)

Transparents bicep_GDR.pdf

14:30 Fitting the Fermi-LAT GeV excess: on the importance of the propagation of electrons from dark matter

An excess of gamma rays at GeV energies has been detected in the Fermi-LAT data. This signal comes from a narrow region around the Galactic Center and has been interpreted as possible evidence for light (30 GeV) dark matter particles. Focussing on the prompt gamma-ray emission, previous work found that the best fit to the data corresponds to annihilations proceeding into b quarks, with a dark matter profile ~ r^{-1.2}. In this talk, I will show that this is not the only possible annihilation set-up. More specifically, I will show how including the contributions to the gamma-ray spectrum from inverse Compton scattering and bremsstrahlung from electrons produced in dark matter annihilations, and undergoing diffusion through the Galactic magnetic field, modifies the spectrum, in particular for leptonic final states.

Orateur: Thomas Lacroix

Slides GDR_terascale_Thomas_Lacroix.pdf

15:00 DM with supersymmetric triplets

The Triplet extension of the MSSM (TMSSM) alleviates the little hierarchy problem and provides a significant enhancement of the loop-induced diphoton rate of the lightest CP-even Higgs h. In this I will present the first computation of the h into Z + gamma decay. I will show that the rates of loop-induced decays are correlated and their signal strengths can rise up to 40% - 60% depending on the channel. I will furthermore study the dark matter phenomenology of the TMSSM. The lightest neutralino is a good dark matter candidate in two regions. The first one is related to the Higgs and Z resonances and the LSP is mostly Bino. The second one is achieved for a mass larger than 90 GeV and the LSP behaves as the well-tempered neutralino. An advantage of the triplet contribution is that the well-tempered neutralino can be a Bino-Triplino mixture, relieving the problem of achieving M_2 ~ M_1 in unified scenarios. The dark matter constraints strongly affect the Higgs phenomenology, reducing the potential enhancements of the diphoton and of the Z + photon channels by 20% at most. In the near future, complementarity of dark matter direct searches and collider experiments will be crucial to probe most of the parameter space where the neutralino is the dark matter candidate.

Orateur: Dr Chiara Arina (IAP)

Transparents talk_CArina_GDR.pdf

15:30 Axion searches with the EDELWEISS experiment

Orateur: Thibault De Boissiere (CEA Sacaly)

Slides GDR_short_Jun2014.pdf

16:00 → 16:10 Famous last words

Présidents de session: Dirk Zerwas (LAL Orsay), Gilbert Moultaka (L2C Montpellier, UMR5221-UM2/INP/CNRS)

slides 140605_PalaiseauFamousLastWords.ppt