Calendar

Gen
1
Gio
Positivity Constraints on Lorentz-breaking EFTs (Paolo Criminelli, ICTP) @ Aula 500 e online
Gen 1 1970@1:00 am–Feb 7 2106@7:28 am

Seminario di Fisica Teorica-

The coefficients of the operators of an effective field theory (EFT) are constrained to satisfy certain inequalities, under the (mild) assumption that the UV completion satisfies general requirements of causality and unitarity. We begin the extension of these ideas to theories where the Lorentz symmetry is spontaneously broken, as it happens in cosmology and condensed matter physics. Constraints are derived using dispersive arguments for the 2-point function of conserved currents and of the stress-energy tensor.

Per connettersi a zoom:

https://infn-it.zoom.us/j/93341311520?pwd=RklTcFFVWjdtUzR5TUZKM3V1TjJiQT09

Apr
29
Mer
ANNULLATO Holographic Mott Insulators @ Aula 501
Apr 29@2:30 pm–3:30 pm

ANNULLATO
Seminario teorico: Alexander Krikun (Nordita Sweden)

Mag
6
Mer
ANNULLATO ATLAS @ Aula 501
Mag 6@2:30 pm–3:30 pm

ANNULLATO
Seminario fenomenologia: Matt LeBlanc (U. of Arizona/CERN)

Mag
13
Mer
ANNULLATO Seminario di Fenomenologia Dr.Pablo Quilez (DESY) @ Aula 501
Mag 13@2:30 pm–3:30 pm

ANNULLATO
Seminario di Fenomenologia Dr.Pablo Quilez (DESY)

Mag
20
Mer
ANNULLATO Tematiche: Fondamenti di meccanica quantistica e modelli riduzionali @ Aula 501
Mag 20@2:30 pm–3:30 pm

ANNULLATO
Seminario teorico: Angelo Bassi (Uni Trieste)

Mag
26
Mar
ANNULLATO Seminario di Astrofisica Anna Ciurlo (UCLA) @ Aula 501
Mag 26@2:30 pm–3:30 pm

ANNULLATO
Seminario di Astrofisica Anna Ciurlo (UCLA)

Mag
27
Mer
ANNULLATO tematiche: termodinamica quantistica @ Aula 501
Mag 27@2:30 pm–3:30 pm

ANNULLATO Seminario teorico: Matteo Lostaglio (Barcellona)

Nov
4
Mer
Seminario di Fenomenologia Dr. Charanjit Kaur Khosa (Università di Genova) @ on-line
Nov 4@11:00 am–1:00 pm

Machine Learning for BSM searches: A New Perspective

Machine Learning (ML) techniques are emerging as a competitive tool for

Nov
11
Mer
Seminario di Fenomenologia Dr. Stefano Frixione (I.N.F.N. Genova) @ on-line
Nov 11@11:00 am–12:00 pm

The partonic structure of the electron

Although the computation of a vast class of $e^+e^-$ cross sections
is fully doable in perturbative QED, the perturbative series is not
well behaved unless a mechanism is devised that allows one to take
into account, to all orders in the coupling constant, the effects
due to multiple emissions of photons and $e^+e^-$ pairs off the
incoming particles. I shall discuss one such mechanism, that has
a strict analogy with its counterpart in QCD and is based upon
the so-called Parton Distribution Functions (PDFs) of the electron
and the positron. I shall present recent results that have improved
the accuracy to which these PDFs are known.

Per partecipare: gruppo Teams Università di Genova numero 1npbr0h
(se si possiede un account Teams Unige, si può accedere con il codice.
Se invece si possiede solo un account Teams INFN, scrivere a
simone.marzani@ge.infn.it per essere aggiunti come ospiti).

Nov
13
Ven
Seminario generale INFN – Dr. Andrea Celentano (INFN Genova) @ online
Nov 13@11:00 am–12:00 pm

POKER: POsitron resonant annihilation into darK mattER

Light dark matter is the new compelling hypothesis that identifies dark matter with new sub-GeV “Hidden Sector” states, neutral under Standard Model interactions and interfacing with our world through a new force. Accelerator-based searches at the intensity frontier are uniquely suited to explore it. However, current and planned efforts are either limited by the low sensitivity or the high backgrounds. This calls for a major breakthrough in the field.

The goal of POKER is to establish and demonstrate a new approach to search for light dark matter, based on a missing energy measurement with a positron-beam, active thick-target setup.
The new technique, based on light dark matter production through positron annihilation on atomic electrons, is characterized by a larger signal yield compared to previously explored reactions, and by a unique signal signature resulting from the underlying reaction dynamics: a peak in the missing energy distribution.
The final objective of the project, approved as a 1.5 M€ ERC Starting Grant for 2020-2025, is to perform a pilot run with the 100 GeV positron beam available at the H4 beamline at CERN, to demonstrate the technique by exploring a so-far unknown territory in the Hidden Sector parameters space.

In this seminar, after a brief introduction the Hidden Sector physics case, I’ll first discuss the potential of accelerator-based light dark matter efforts. I’ll then present the POKER experiment, focusing on the active thick target – the key element of the project. I’ll finally show the sensitivity of POKER to different Light Dark Matter scenarios.