LIO international conference on Flavour, Composite models and Dark matter

23 nov. 2015, 08:30 → 27 nov. 2015, 18:00 Europe/Paris

Amphi Dirac (IPNL)

Aldo Deandrea (IPNL), Alexandre Arbey (CRAL), Giacomo Cacciapaglia (IPNL - Univ. Lyon 1), Nazila Mahmoudi (LPC Clermont)

Physics beyond the standard model is today's challenge in particle theory and experiments. This conference will allow to explore different but intimately related aspects of new and emerging models. The first part (November 23-25) will be dedicated to flavour with a particular emphasis on physics beyond the standard model. The second part (November 25-27) will be dedicated to composite models for the electroweak scale, both the new technicolor models and the composite (Goldstone)-Higgs type. Both parts will include a workshop session aimed at discussing and exploring together, in a collaborative way, new and recent theoretical ideas for these models and for their dark matter candidates.

Part 1: Flavour (23-25 November). We will discuss new experimental results in flavour physics and their implications for BSM models. A part of the workshop will be dedicated to discussing new model building ideas. The first two days (23-24) will include talks summarizing the current experimental and theoretical situation in flavour physics, with some time also dedicated to open discussions, while more formal presentations will be given on the 25th.

Part 2:  CoDyCE 5, Composite Dynamics and Dark Matter (25-27 November).  The second part of the meeting will be dedicated to discussing new ideas in the understanding of strong dynamics in the Higgs sector and beyond, focusing on the use of a fundamental composite dynamics. Both results on the lattice and in phenomenology will be addressed. Discussion on Dark Matter and prospects for its detection will be a central point. Plenary presentations are scheduled on the 25th, while the last two days will be dedicated to open discussion sessions. This workshop is part of a series of meetings (CoDyCE) between the IPNL and the CP3-Origins.

How to reach Lyon: if you fly in the Lyon Exupery airport, you can easily reach Lyon by taking the express tram Rhonexpress to the central Lyon Part-Dieu train station.

How to reach the IPNL (conference venue): take the tram T1 direction IUT Feyssine or T4 direction La Doua Gaston Berger and get off at the stop Universite Lyon 1. From there you can walk to the IPN: follow the tram track and turn on the first road on the left. The IPNL is down the road (click on the link below to see a map).

View Map

The "Amphi Dirac" is on the ground floor, the "Salle du Conseil" on the first floor.

 

 

Full size conference logo art here ("gocce di pioggia" © E.D. 2008)

 

 

 

notes Café_francais.pdf

Transparents LIO-Nov15.pdf

lundi 23 novembre

08:30 → 09:00 Registration

09:00 → 10:10 Flavour 1

09:00 Welcome

Orateur: Dr Nazila Mahmoudi (LPC Clermont)

Slides welcome.pdf

09:10 Constraints from EW penguin and Rare B decays

Orateur: Dr Christoph Langenbruch (University of Warwick)

Transparents langenbruch.pdf

09:40 Lepton flavour violation search and test of lepton flavour universality

Orateur: Francesco Dettori (CERN)

Transparents Dettori-LIO_LFV.pdf

10:10 → 10:40 Coffee Break

10:40 → 12:10 Flavour 1

10:40 Theoretical uncertainties in b to s leptonic decays

Orateur: Aoife Bharucha (CPT, Marseille)

Slides AoifeLyon.pdf

11:10 Cool anomalies in b to s transitions

Orateur: Dr Javier Virto (University of Siegen)

11:40 Constraints on Wilson coefficients from b to s transitions

Orateur: Siavash Neshatpour (Institute for Research in Fundamental Sciences (IPM))

Slides 6-Neshatpour_Lyon.pdf

13:00 → 14:00 Lunch break

14:00 → 16:00 Flavour 1

14:00 Overview of LFV in B decays, in the context of the LHCb discrepancies in b to s ll decays

Orateur: Diego Guadagnoli (LAPTh Annecy)

Slides Talk_Guadagnoli.pdf

14:30 Explaining the LHC flavour anomalies

Orateur: Giancarlo D'AMBROSIO

Slides dambrosio.pdf

15:00 Discussion

Orateurs: Patrick Owen, Petridis Konstantinos

16:00 → 16:30 Coffee break

16:30 → 17:30 Flavour 1

16:30 Collaborative work

mardi 24 novembre

09:00 → 10:00 Flavour 2

09:00 Impact on New Physics scenarios from CPViolation measurements

Orateur: Mme Yasmine Amhis (lhcb)

Transparents CPV-Yasmine.pdf

09:30 CP Violation in heavy mesons

Orateur: Dr Martin Jung (TUM IAS / Excellence Cluster Universe)

Transparents CPVinBD.pdf

10:00 → 10:30 Coffee Break

10:30 → 12:00 Flavour 2

10:30 Update on |Vxq| determinations

Orateur: Giulia RICCIARDI

Slides 03_talk_Lyon.pptx

11:00 Perspective study of charmonium, exotics and baryons with charm and strangeness

Orateur: Dr Mikhail Barabanov (JINR)

11:30 Discussion

13:00 → 14:00 Lunch break

14:00 → 16:00 Flavour 2

14:00 A Very Light Z' for muon g-2 and Its Implications

Orateur: Prof. George W.S. Hou (National Taiwan University)

Slides lightZ'.pdf lightZ'.pptx

14:30 BSM effects in semileptonic decays of light quarks

Orateur: Martin Gonzalez-Alonso (IPN Lyon)

Transparents Gonzalez-Alonso.pdf

15:00 BSM searches with rare charm decays

Orateur: Stefan DE BOER

Slides de_boer.pdf

15:30 Discussion

16:00 → 16:30 Coffee break

16:30 → 17:30 Flavour 2

16:30 Collaborative work

20:00 → 23:00 Dinner : Grand café des négociants

mercredi 25 novembre

08:30 → 09:00 Registration

09:00 → 18:00 Flavour/Composite plenary

09:00 Theoretical Predictions for the Weak Radiative B-Meson Decays

Orateur: Mikolaj MISIAK

Slides 01-Misiak.pdf

09:45 Status of flavour physics and implications for new physics

Orateur: Tobias HURTH

Slides 02-Lyon2015-Hurth.pdf

10:30 Coffee break

11:00 Theoretical description of LHCb anomalies and global fits

Orateur: Prof. Joaquim Matias (Universitat Autonoma Barcelona)

Slides 03-matiasLyonred.pdf

11:45 Dark Matter from muon anomalies

Orateur: Dr Cedric Delaunay (LAPTH)

Slides muonDM-lyon.pdf muonDM-lyon.pptx

13:00 Lunch break

14:00 Partial compositeness, UV completions and ALPs

Orateur: Prof. Gabriele Ferretti

Slides Lyon15.pdf

14:45 The Elementary Goldstone Higgs

The Higgs as a pseudo Goldstone Boson is not only possible in a composite scenario but also possible in an elementary scenario. In the elementary scenario the theory is both renormalizable and perturbative, which means that the quantum corrections can be calculated using the Coleman-Weinberg potential while permitting to explore the underlying parameter space. By characterising the available parameter space of the extended Higgs sector we discover that the preferred electroweak alignment angle is centred around θ ≃ 0.02, corresponding to the Higgs chiral symmetry breaking scale f ≃ 14 TeV.

Orateur: Mme Helene Gertov

Abstract Abstract.pdf

Slides CoDyCE.pdf

15:30 Constraining composite Higgs models with direct and indirect searches

Direct searches for fermion and vector boson resonances, as well as indirect constraints from precision measurements are both important tools to test the predictions of composite Higgs models. A novel numerical technique allows us to take into account many direct and indirect constraints in a single framework. I will present results from applying our method to a class of four-dimensional pseudo-Nambu-Goldstone boson Higgs models that contain a calculable Higgs potential and protective custodial and flavour symmetries. We find that the models are able to serve as an explanation for the recently observed 2 TeV resonances as well as several B physics anomalies.

Orateur: Christoph Niehoff (Excellence Cluster Universe, TUM)

Slides Lyon_ChristophNiehoff.pdf

16:00 Coffee break

16:30 The Quantum Critical Higgs

Orateur: Prof. Seung J. Lee

Slides Lyon_2015_SLee.pdf

jeudi 26 novembre

09:00 → 10:00 CoDyCE 1: Composite Flavour

pippo

09:00 Composite flavour

Orateur: Dr Alberto Parolini

Slides Alberto_Parolini_Lyon_Workshop_2015.pdf

09:20 Discussion

10:00 → 10:30 Coffee break

10:30 → 12:30 CoDyCE 1: Phenomenology of VLQs

pippo

10:30 Connecting Flavor and EWSB: A Heavy Q and a Light Dilaton

There is nothing wrong with a 4th generation of quarks, except for the Higgs cross section. Along the recent questioning of the nature of "Higgs boson" by Phil Anderson, we advocate that what is observed may still be a Dilaton. This may seem to run against the recent ATLAS-CMS combination that claims VBF to be above 5sigma. We caution that combining potential bias(es) is dangerous, while the source of EWSB is too important an issue to be cavalier about. We should wait for LHC Run 2 data to unfold. Yukawa couplings are the source of known flavor physics, and range from ~ 0.00003 for u-quark, to ~ 1 for top. We conjecture the effect for near "extremum" value at 4pi, since direct search bounds on 4G quark Q have reached beyond unitarity bound. Through an empirical, self-consistent no-scale equation which is beyond NJL model, dynamical EWSB can occur at this extremum, thereby permitting a Dilaton to emerge from ultra-strong Yukawa dynamics, even though the Yukawa coupling itself remains an enigma. Mixing of Q with light quarks may touch Bq -> mu+mu-, KL -> pi0nunu and sin(2phi1/beta) in B0 -> J/psi phi, while sin(phis) ~ 0 is permitted. There is enough CPV for the matter asymmetry of the Universe! A consistent picture may emerge from the confluence of measurements in the next few years, with the possibility of observing "fireballs" of high multiplicty multi-V (or Goldstone boson) production, which would become a certainty at higher energy proton colliders.

Orateur: Prof. George Hou

Slides FlavEWSB_Q-D.pdf FlavEWSB_Q-D.pptx

11:20 Search strategies for composite top partners at LHC run II

Abstract: We discuss several new search strategies for heavy vector-like quark partners at the early stages of the LHC run-II. Run-II will have sensitivity to single- and pair-produced quark partners with masses beyond 1 TeV. Decays of such heavy particles yield highly boosted tops, Higgses, and weak gauge bosons, all of which decay dominantly hadroni- cally. At low boost, hadronic final states suffer from large Standard Model backgrounds, such that leptonic or semi-leptonic decay channels yielded better discovery potential at run-I. At high boost, the SM background of hadronic final states can be substantially sup- pressed when applying jet-substructure techniques. We present several case studies where the identification of hadronically decaying tops, Higgses, and/or electroweak gauge bosons allow to make new search channels competitive at run-II. based on: arXiv:1507.06568 (and earlier works: 1409.0409, 1410.8131, 1501.07456)

Orateur: Dr Thomas Flacke

11:50 Discussion

13:00 → 14:00 Lunch break

14:00 → 14:30 The Half-composite Two Higgs Doublet Model and the Relaxion

Orateur: Oleg Antipin (CP3-Origins, University of Southern Denmark)

Slides Lyon2015.pdf

14:45 → 16:00 CoDyCE 1: Lattice results

pippo

14:45 Lattice Four Fermion Interaction in Beyond Standard Model Physics

Four fermion interactions occur naturally in several extensions of the Standard Model as a low energy description of a more fundamental theory. In models of dynamical electroweak symmetry breaking, they are used to provide Standard Model fermion masses. When sufficiently strong, these operators can drastically alter the fundamental composite dynamics. For example, they can, turn an infrared conformal model into a (near conformal) chirally broken one, or modify the anomalous dimensions at the infrared fixed point. As a first step we study the lattice version of the Nambu Jona-Lasinio model, a chirally symmetric model with four fermion interactions, with Wilson fermions.

Orateur: Dr Jarno Rantaharju

Slides codyce2015.pdf

15:15 Discussion on Lattice prespectives

Orateurs: Prof. Francesco Sannino, Dr Jarno Rantaharju

16:00 → 16:30 Coffee break

16:30 → 18:00 CoDyCE 1: Di-boson excess

pippo

16:30 Interpreting a 2 TeV resonance in WW scattering

A diboson excess has been observed ---albeit with very limited statistical significance--- in WW, WZ and ZZ final states at the LHC experiments using the accumulated 8 TeV data. Assuming that these signals are due to resonances resulting from an extended symmetry breaking sector in the standard model and exact custodial symmetry we determine using unitarization methods the values of the relevant low-energy constants in the corresponding effective Lagrangian. Unitarity arguments also predict the widths of these resonances. We introduce unitarized form factors to allow for a proper treatment of the resonances in Monte Carlo generators and a more precise comparison with experiment.

Orateur: Prof. Domenec Espriu (ICCUB-Universitat de Barcelona)

Slides Lyon15_Espriu.pdf

17:00 Discussion

20:00 → 23:00 Dinner: Café français

vendredi 27 novembre

09:00 → 10:00 CoDyCE 2: Odd top partners and Dark Matter

09:00 Discussion on composite DM

Orateurs: Dr Cedric Delaunay (LAPTH), Dr Michele Frigerio (Laboratoire Charles Coulomb, CNRS)

Transparents LIO-Lyon-2015.pdf

10:00 → 10:30 Coffee break

10:30 → 12:30 CoDyCE 2: UV completion of Partial Compositeness

10:30 A dangerous irrelevant UV-completion of the composite Higgs

Orateur: Dr Luca Vecchi

Slides LIO.pdf

11:00 Discussion

13:00 → 14:00 Lunch break

14:00 → 16:00 CoDyCE 2: Discussion and collaborative work

16:00 → 16:30 Coffee break

16:30 → 17:30 CoDyCE 2: Discussion and collaborative work