Fourth Rome Physics Encounter @LNF

Tuesday 17 Mar 2020, 11:00 → 16:00 Europe/Rome

Aula Salvini

The encounter is postponed until further notice following the restrictions from INFN regarding organised meetings.

 

This informal meeting is the fourth of the Rome physics encounter series. It aims at bringing together young speakers working or collaborating with the research groups in the Rome area.

In the spirit of workshops and conferences at LNF, talks will be presented in a pedagogical way and plenty of time is scheduled to allow discussions among participants. The encounters will be synchronised with a selected LNF General Seminar, held in the afternoon at 2.30pm.

The lunch is offered to all registered participant at the LNF canteen.

Rome Physics Encounters: Young scientists series

1 TBA

Speaker: Guglielmo Frattari (Roma 1) (R)

2 DarkSide Status and Prospects

DarkSide uses a dual-phase Liquid Argon Time Projection Chamber to search for WIMP dark matter. The current detector, DarkSide-50, is running since mid 2015 with a target of 50 kg of
Argon from an underground source. In this contribution the latest results of searches of WIMP nucleus interactions, in the WIMP masses range of GeV-TeV, together with results from WIMP electron interactions in the sub-GeV mass range, are fully presented. The future of DarkSide with a new generation experiment, involving a global collaboration from all the current Argon based experiments, is also presented.

Speaker: Simone Sanfilippo (Roma 3) (on behalf of the DarkSide collaboration)

13:15 Lunch

General LNF Seminar

3 Dark matter bound states: where do we stand?

In a variety of theories, Dark Matter (DM) interacts with gauge bosons or scalars that induce long-range interactions because of repeated soft exchanges. Remarkably, the inclusion of bound-state effects for DM annihilation has been recently shown to have a large impact on the relic density and, therefore, on the parameters of a given model to be compatible with observations. At the same time, it is manifestly subtle and complicated to include bound-state dynamics in a thermal medium due to the intricate interplay between non-relativistic and thermal energy scales. Starting from a thermal field theoretical formulation of the problem, we use an effective field theory approach to describe bound-state formation and dissociation, Sommerfeld effect, DM thermal masses and interaction rates. We show the phenomenological impact of such framework for wimp-like models with mediators to the visible sector. Moreover, we discuss some shortcomings in the current rate equations that limit the validity of existing results in the literature for even simpler dark matter models.

Speaker: Prof. Simone Biondini (Groningen Univ.)