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Particle Physics in Paris

Europe/Paris
Paris

Paris

Description

                                                                                  

 

Particle Physics in Paris is a series of meetings aiming at gathering the particle and astro-particle physics community of the Paris area around a distinguished invited speaker. The goal of these meetings is to discuss the latest and exciting developments in the field of particle physics, exchange ideas, and start new collaborations. It is also an opportunity to get to know the new postdocs of the Paris community.

The meeting takes place once a month during the afternoon at LPTHE (Jussieu), IPhT (Saclay) or LPT (Orsay). It starts at 2pm with a 1h seminar, then a 30' minute break with coffee, tea and pastries provided, and finally a 1h joint journal club to discuss altogether about recent interesting papers 

We hope to see you numerous at the P cube meeting!

 

Organisers:

  • Brando Bellazini (brando.bellazzini@cea.fr)
  • Mathieu Boudaud (boudaud@lpthe.jussieu.fr)
  • Adam Falkowski (adam.falkowski@th.u-psud.fr)
  • Andreas Goudelis (andreas.goudelis@lpthe.jussieu.fr)

 

    • 14:00 15:00
      Assessing the Higgs (self-)couplings 1h Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris

      The Higgs self-coupling is at the heart of the hierarchy problem and it controls the fate of the electroweak vacuum. Yet, it is notoriously intangible at the LHC. First, I’ll discuss how to possibly obtain a parametrically enhanced deviation of the Higgs self-couplings compared to the Higgs couplings to the other particles, thus motivating an independent measurement. Then, I’ll show how to probe this coupling in a global fit of the Higgs data, relying in particular on the use of differential measurements in the associated single-Higgs production channels in addition to the traditional double-Higgs production channel.

      Orateur: Christophe Grojean (DESY - Hamburg)
    • 15:00 15:30
      Coffee break 30m Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris
    • 15:30 16:30
      Journal club 1h Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris

      Discussing recent papers.

    • 14:00 15:00
      Gravitational waves and the two-body problem in general relativity 1h 114 (LPT Orsay)

      114

      LPT Orsay

      Building 210, Univ. Paris-Sud 11, 91405 Orsay

      The gravitational wave detectors LIGO/VIRGO have discovered the signals generated by the coalescence of compact binary systems (made of black holes or neutron stars) at astronomical distances. The theoretical and numerical works on the two-body problem in general relativity play a crucial role when deciphering and interpreting the gravitational wave signals. In this talk, after a general review on gravitational waves and the problem of motion, we shall present the state-of-the-art on approximation methods in general relativity, such as the famous post-Newtonian expansion, which is an expansion when the orbital velocity of the compact objects is small with respect to the speed of light. We shall show how important is this approximation for the GW detections, notably the recent binary neutron star event, and discuss the latest developments in the field.

      Orateur: Luc Blanchet (C.N.R.S.)
    • 15:00 15:30
      Coffee break 30m LPT

      LPT

      Univ. Paris-Sud 11, 91405 Orsay
    • 15:30 16:30
      Journal club 1h LPT

      LPT

      Univ. Paris-Sud 11, 91405 Orsay

      "Fact Checking Dark Energy" led by Filippo Vernizzi

    • 14:00 15:00
      Sexaquark Dark Matter 1h Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris

      There may be a so-far-undiscovered neutral, stable particle composed of 6 quarks, denoted S, with mass m_S ~ 2 m_p. If so, the S is an excellent Dark Matter candidate. I will explain why such a particle would not have been detected, propose experiments to discover it, discuss why direct detection experiments to date do not exclude it, mention some of the numerous astrophysical benefits of a DM-baryon interaction, and how it works cosmologically giving the observed DM-baryon abundance ratio and the baryon asymmetry of the Universe.

      Orateur: Glennys Farrar (CCPP - New York University)
    • 15:00 15:30
      Coffee break 30m Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris
    • 15:30 16:30
      Journal club 1h Library (LPTHE)

      Library

      LPTHE

      UPMC, 4 place Jussieu, 75005 Paris

      Discussing recent papers.

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