Attention! Sur cette page seuls sont affichés les séminaires organisés par les membres de l'équipe TIF affectés au L2C. Pour voir tous les séminaires de l'équipe TIF cliquer
ici
(14) Presentation(s) - Année 2017
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Jeu. 29/06/2017 14:00 Petite Ourse, Bâtiment 13, Etage 1 Séminaire
CHARLES Jérôme (CPT, Marseille)
Critical Review of B-meson anomalies (Théorie des Interactions Fondamentales)
---------  Pour plus d'informations, merci de contacter Desai N.
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Jeu. 06/07/2017 14:00 Grande Ourse, Bâtiment 13, Etage 1 Séminaire
BAUER Martin (ITP, Heidelberg)
Searching for Axion-like Particles at Colliders (Théorie des Interactions Fondamentales)
Sommaire:
Light Axion-like particles (ALPs) with masses below 1 MeV are strongly constrained by cosmological and beam-dump experiments. The parameter space for heavier ALPs however is largely unconstrained. I will review the current bounds and argue, that collider probes and in particular the exotic Higgs decays h→Za and h→aa can test many orders of magnitude of so far unconstrained parameter space for a variety of ALP decays. Almost the complete region in which ALPs can explain the anomalous magnetic moment of the muon can be probed by searches for these decays with subsequent decay a→γγ even if the relevant couplings are loop suppressed and the a→γγ branching ratio is less than~1. Pour plus d'informations, merci de contacter Desai N.
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Jeu. 21/09/2017 14:30 Grande Ourse, Bâtiment 13, Etage 1 (à confirmer) Séminaire
SUMENSARI Olcyr (LPT, Orsay)
B-physics and lepton flavor (universality) violation (Théorie des Interactions Fondamentales)
Sommaire:
Even though the LHC searches so far did not unveil the new physics particles, the B-physics experiments at LHCb, BaBar and Belle hint towards deviations from Lepton Flavor Universality in both the tree-level and loop-induced B meson semileptonic decays. I will briefly review the models that can address these puzzles, propose one new model and discuss the main predictions that can be tested at LHCb and/or Belle-II. Particular emphasis will be given to Lepton Flavor Violation in B meson decays, which
offer a very clean alternative to test the proposed New Physics scenarios. --------- Pour plus d'informations, merci de contacter Desai N.
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Jeu. 09/11/2017 14:00 Petite Ourse, Bâtiment 13, Etage 1 Séminaire
GOUDELIS Andreas (LPTHE, Paris)
Constraining pseudoscalar-mediated dark matter models with the LHC and cosmology (Théorie des Interactions Fondamentales)
Sommaire:
Pseudoscalar particles are ubiquitous in models of New Physics and could mediate the interactions of dark matter with the visible sector. Although direct detection experiments are fairly inefficient in constraining such scenarios, they can be tested through a combination of collider, cosmological and astrophysical probes. I will discuss the interplay between these observables in a simple pseudoscalar-mediated dark matter model and comment upon how these constraints evolve within UV-complete New Physics scenarios. Time permitting, I will also briefly discuss alternative ideas about the generation of the dark matter abundance in the Universe which imply a radically different phenomenology at the LHC. --------- Pour plus d'informations, merci de contacter Desai N.
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Jeu. 30/11/2017 14:00 Grande Ourse, Bâtiment 13, Etage 1 Séminaire
SALVIONI Ennio (TU, Munich)
Charged Composite Scalar Dark Matter (Théorie des Interactions Fondamentales)
Sommaire:
We consider a composite model where both the Higgs and a complex scalar \chi, which is the dark matter (DM) candidate, arise as light pseudo Nambu-Goldstone bosons from a strongly coupled sector with TeV scale confinement. The global symmetry structure is SO(7)/SO(6), and the DM is charged under an exact U(1) \subset SO(6) that ensures its stability. The DM phenomenology depends strongly on whether the \chi shift symmetry is broken or respected by the coupling of the top quark to the strong sector. I will discuss both possibilities in detail, including the interplay with LHC physics. Based on arXiv:1707.07685 and work in progress. Pour plus d'informations, merci de contacter Desai N.
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