Seminario di Fenomenologia
In this talk I will consider signal-background interference effects in Higgs-mediated diphoton production at the LHC. The inclusion of such effects results in a shift of the diphoton invariant mass distribution and in a destructive contribution to the total cross section. As pointed out in earlier works, one can exploit interference studies to put bounds on the Higgs boson decay width. After reviewing the Higgs interferometry framework I will present an extension of this analysis up to NNLO QCD in the soft-virtual approximation.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fisica Teorica –
In this talk I will first give a brief introduction to the effective string model and then discuss a few recent results on the behaviour of the string in the vicinity of the deconfinement transition obtained with a combination of conformal perturbation analysis and Montecarlo simulations.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fenomenologia –
Machine Learning is, in most cases, powerful but a black-box application. In this talk, we will tackle this very problem from a quantum mechanics point of view, arguing that an optimisation problem, such as classification or anomaly detection, can be studied by “rephrasing” the problem as a quantum many-body system or a mixed state. Such an approach allows us to employ the entire arsenal of quantum theory for data analysis techniques while enabling exact representation for a quantum device. Hence this talk will present a small step towards fully theory-driven and interpretable quantum machine learning applications.
Per connettersi a zoom:—
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fenomenologia –
The stochastic gravitational waves background is a rich resource of cosmological information, encoded both in its source statistics and its anisotropies. During their journey, the gravitational waves constituting the background encounter cosmic structures, which are able to modify the observed signal. According to the ratio between the wavelength of the wave, and the matter overdensities typical length-scale, interference and diffraction effects may arise, possibly boosting the signal’s amplitude or inducing a non-trivial polarization pattern. In this talk I will present results about the wave-optics limit of the stochastic gravitational wave background, and describe how we can use them to gain information about the matter content of the Universe.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271Meeting ID: 857 318 5271
Seminario di Fisica Teorica –
I will present the classification of all unitary, rational conformal field theories with one non-trivial primary and central charge c < 25. (with Brandon Rayhaun, arXiv: 2208.05486). I will also, more briefly, review a partial classification of theories with two nontrivial primaries, as well as some new predictions on the existence of meromorphic CFT with central charge 32.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fisica Teorica –
Hydrodynamics is the effective theory that governs the transport of charge, energy and momentum at late times and large distances. In certain circumstances this description must be modified to include the fact that these charges decay very slowly; for example when there are chemical processes or spatial translation invariance is broken. In this talk I will primarily discuss how to incorporate such “relaxation” processes into the effective theory of a fluid driven by an electric field. Given sufficient time I will place this work in the larger context of the relaxed hydrodynamics programme and tease new results.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fenomenologia –
Axion-like particles (ALPs) are one of the most attractive solutions to the dark matter issue.
In this talk, I will discuss how to search for ALPs in astrophysical structures.
After some introduction, I will focus on the emission associated with their decay into photons.
The discussion will involve different ALP mass ranges and wavelength bands.
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fisica Teorica –
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fenomenologia –
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271
Seminario di Fenomenologia –
Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271