Seminars

Please note our new INDICO web-page with all the seminars at IFAE

Theory Seminars

Pizza Seminars

SEMINAR: Ultra-light dark matter and pulsar timing observations

June 18 2015, 12:00pm - Seminar room

Speaker: Andrei Khmelnitsky (Ben Gurion U of Negev)

Abstract : An ultra-light free scalar field with mass in the range 10^{-23} - 10^{-22} eV is a viable dark mater candidate. It can address the overabundance of cold dark matter structures on sub-galactic scales.

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SEMINAR: A Cosmological Solution to the Electroweak Hierarchy Problem

June 12 2015, 12:00pm - Seminar room

Speaker: David E Kaplan (Johns Hopkins University, Baltimore, USA

SEMINAR: Aspects of string phenomenology in particle physics and cosmology

June 5 2015, 12:00pm - Seminar room

Speaker: Ignatios Antoniadis (Ecole Polytechnique, Paris)

Abstract : I will discuss the problem of scale hierarchies in string phenomenology and propose ways to address it.

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SEMINAR: Thermo-electric transport properties in holography with momentum dissipation.

June 4 2015, 12:00pm - Seminar room

Speaker: Nicodemo Magnoli (Genova U)

Abstract : In the first part of this seminar we will provide an analytical derivation of the transport coefficients of the simplest momentum dissipating model in gauge/gravity where the lack of momentum conservation is realized by means of explicit graviton mass in the bulk. In the second part we will investigate the possibility of formulating Planckian bounds in different models featuring momentum dissipation. We will show that in a holographic dilaton model it is possible to formulate a bound on the sum of the charge and energy diffusion constants.

SEMINAR: Solar constraints for particle physics

May 22 2015, 12:00pm - Seminar room

Speaker: Aldo Serenelli (IEEC UAB)

Abstract : Standard solar models (SSMs) have been used for more than 30 years for to set limits on properties of non-standard particles. Their constraining power, however, depends on how accurately they represent the Sun and this has been challenged over the last decade by spectroscopic measurements of the solar surface composition: the solar abundance problem.

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SEMINAR: Mining the Golden Channel: Searching for New Physics in Higgs decays to four leptons

May 15 2015, 12:00pm - Seminar room

Speaker: Roberto Vega-Morales (LPT-Orsay, Paris)

Abstract : An overview of various physics possibilities in the Higgs to four leptons 'golden channel' decay will be presented and discussed. First we analyze effective Higgs couplings to neutral electroweak gauge bosons​.

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SEMINAR: Accidental matter at the LHC

 

April 28 2015, 12:00pm - Seminar room

Speaker: Luca Di Luzio (U Genova)

Abstract : In this talk I will discuss a class of weak-scale extensions of the Standard Model which automatically preserve its accidental and approximate symmetry structure at the renormalizable level and which are hence invisible to low-energy indirect probes.

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SEMINAR: Study of the Higgs properties at a muon collider

May 8 2015, 12:00pm -  Seminar room

Speaker: Mario Greco (INFN and Univ. Roma 3)

Abstract : The discovery of the Higgs particle at 125 GeV is demanding a detailed knowledge of the properties of this fundamental component of the Standard Model.

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SEMINAR: Single top + Higgs: quantum interference and the sign of y_t

April 9 2015, 2:30pm - Seminar room

Speaker: Andrea Giammanco (CERN)

Abstract : An interesting "accidental cancellation" in the Standard Model between the leading production diagrams makes the search for a Higgs boson in association with a single top quark (tHq) a powerful probe for new physics.

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SEMINAR: Top mass from the bottom (at NLO)

March 20 2015, 2:30pm - Seminar room 

Speaker: Roberto Franceschini (CERN)

Abstract : In this talk I will briefly review the present status and motivations for an accurate measurement of the top quak mass. In particular I will outline future strategies and possible outcomes for a global combination of top quark masses measurement at hadron colliders.

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