The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN will significantly increase the collider's particle density, presenting new challenges for the ATLAS experiment's detectors. To address these challenges, a new radiation-hard beam monitoring system has been developed to protect the inner silicon detectors and accurately monitor the increased luminosity. This system...
Sterile neutrinos are present in multiple extensions to the Standard Model and participate in neutrino mass mechanisms, from simple type-I seesaw models to UV complete theories like left-right symmetry. In total analogy to the case of light neutrinos, the neutrinoless double β decay amplitude induced by the exchange of sterile neutrinos requires the introduction of a leading-order, short-range...
Motivated by the remarkable Belle II experimental result on $B\to K^{} E_{\rm miss}$ I review the scenarios that could accomodate the observed deviation and how this correlate with constraints coming other observables induced by flavour changing neutral currents. I discuss the phenomenological difficulties in accommodating it exclusively in terms of processes with SM neutrino final state and...
The effective cross section of double parton scattering in proton collisions has been measured by many experiments with rather different results.
Motivated by this fact, we assumed that the parton correlations in the transverse plane are different whether we have valence or sea partons.
With this simple approach, we were able to fit the available data and found that sea parton pairs...
