FYI

#---------------------------------------------------------------------# Alberto Mariotti Vrije Universiteit Brussel (VUB) https://we.vub.ac.be/HEPVUB Phone: +32 (0) 2 629 32 15 E-mail: alberto.mariotti@vub.be Address: Vrije Universiteit Brussel Physics Department Elementary Particles Research Group Pleinlaan 2, 1050 Brussels, Belgium #---------------------------------------------------------------------#

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From: Facchinetti Gaëtan gaetan.facchinetti@ulb.be Subject: Re: ULB PhysTH Seminar by Simon Clery - 10/13/2023 at 11 am Date: 18 October 2023 at 14:23:53 CEST To: GRP_ULB_PhysTh GRP_phys_th@ulb.be, GRP_ULB_Sem_Add GRP_physth_sem@ulb.be Resent-From: alberto.mariotti@vub.be

Dear All,

This week we have the pleasure to welcome Simon Clery (IJCLab, Université Paris-Saclay) who will give us a seminar on Friday the 20th of October at 11am in room 2.N7.110 (building NO, campus Plaine). He will tell us about

Gravitational production of matter and radiation during reheating I present some new results on particle production during the reheating after inflation. We focus on the late-time evolution of the scalar inflationary field, during its coherent oscillation regime. We specifically consider the production of dark matter and radiation, restricting our attention to gravitational interactions, including minimal and non-minimal coupling to gravity. We also consider leptogenesis through the gravitational production of heavy right-handed neutrinos during reheating.

Best regards,

Gaétan

Le 13 oct. 2023 à 10:38, TYTGAT Michel Michel.Tytgat@ulb.be a écrit :

Dear All, We have the pleasure to invite you to the seminar by Dr Aliaksei Kachanovich (Ruđer Bošković Institute, Zagreb) on 'Flavour-Changing Neutral Current Processes Within the Standard Model and Beyond'. The seminar is 11:00 am in the room 2 N7 110 (building NO, Campus Plaine). In this talk, I will discuss the study of rare flavour-changing processes, which can provide us with insights into how we may need to modify or extend the Standard Model to address open problems such as CP-violation in Baryo- and Lepto-genesis, Dark Matter, the strong CP problem, neutrino mass origins, and more. The Standard Model has proven to be a highly successful theory with excellent experimental agreements, and additional forces or effects may manifest themselves in processes where contributions from known forces and effects are exceedingly small. I will primarily focus on two processes: the decay of the Higgs boson into two leptons and a photon, where the main contribution arises from a one-loop, and the decay of B-mesons into Kaons with a mediator to the Dark Sector. This talk is based on my research conducted during my Ph.D. at KIT, Karlsruhe, and during a short-term postdoc at the same institution (e-Prints: 2001.06516, 2003.01788, 2109.04426). Kind regards, Michel Ps: sorry for the late announcement. -- Michel H.G. Tytgat Research Director FNRS – Professor ULB Université Libre de Bruxelles (ULB) Service de Physique Théorique CP225, Bld du Triomphe 1050 Brussels, Belgium +32 (0)2 650 55 70 michel.tytgat@ulb.be De : Facchinetti Gaëtan gaetan.facchinetti@ulb.be Date : lundi, 28 août 2023 à 10:41 À : GRP_ULB_PhysTh GRP_phys_th@ulb.be, GRP_ULB_Sem_Add GRP_physth_sem@ulb.be Objet : ULB PhysTH Seminar by Maxim Pospelov, 1 sept. 2023 Dear All,

Although the days shorten and the temperatures decrease, there is joy in the air for it is the beginning of the academic year and PhysTh seminars will start again. I am happy to announce that the first one will take place next Friday, the 1st of September, between 11am and 12pm. Maxim Pospelov, from the University of Minnesota, will tell us about Standard Model and EDMs (see abstract below). If you receive no further notifications from me, the seminar will take place in our seminar room: 2.N7.110. Best regards, Gaétan

———————————————— Abstract I review the main mechanisms that convert fundamental CP-violating parameters (theta_QCD and Kobayashi-Maskawa phase) to the observable electric dipole moments (EDMs). In light of recent experimental progress, the EDMs connected to electron spin (paramagnetic EDMs) are calculated. The limit on QCD theta angle is 2 * 10^(-8) and somewhat subdominant to neutron EDM, but can be improved. The Kobayashi-Maskawa phase contributes to paramagnetic EDMs at the level of 10^{-35} e cm in units of equivalent electron EDM, which is much larger than what was previously estimated. ———————————————— Seminars and Journal Clubs agenda: http://cp3.irmp.ucl.ac.be/PAI/month.php ================ ULB PhysTH Seminar by Maxim Pospelov (U. of Minnesota), 'Standard Model and EDMs', Room 2.N7.110 [BEL-center:pheno] Dates : 1 sept. 2023, 11:00-12:00, UTC+2 ================

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