Conveners
ECR: ECR Session
- Jesse Zhang (ETH Zürich)
ECR: ECR poster session
- Lorenzo Giannessi (Universite de Geneve (CH))
We present performance tests of the ATLAS Phase-II Outer Barrel Pixel detector services chains. The Phase-II pixel upgrade is part of the ITk HL-LHC upgrades to be installed later in this decade. After successful completion of the design phase, the final components are undergoing production and integration testing. A full data transmission chain is set up at the University of Bern for ITk that...
We present the first observation of $\tau$ lepton pair production in ultraperipheral nucleus-nucleus collisions. The measurement is based on a data sample collected by the CMS experiment at a per nucleon center-of-mass energy of $5.02~\mathrm{TeV}$, and corresponding to an integrated luminosity of $404~\mu\mathrm{b}^{-1}$. The $\gamma\gamma\to\tau^{+}\tau^{-}$ production is observed with a...
In the light of the current hints for new scalars at the LHC at 95 GeV and 151 GeV, I present an analysis of low mass resonances decaying into W bosons. Recasting and combining the SM Higgs analyses of ATLAS and CMS, our results give further support to the existance of such new Higgs bosons.
The work is based on the paper: e-Print:2302.07276 [hep-ph]
I discuss the two-Higgs doublet model extended by a complex singlet and an additional U(1) gauge group (N2HDM-U(1)) and compare it to the standard two-Higgs doublet model with Z2 symmetries (N2HDM-Z2). We show that the N2HDM-U(1) is more predictive as it has one less free parameter, is CP conserving, and involves only spontaneous symmetry breaking. We then examine the phenomenological...
NA62 is a fixed-target experiment at the CERN SPS dedicated to measurements of rare kaon decays. It is approved to take data until CERN long shutdown 3, with the primary goal to collect the order of 100 candidates $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ events and to measure the corresponding branching ratio with the precision of the order of 10%. The experiment resumed data taking in 2021 after...
An electric dipole moment (EDM) of a fundamental particle would violate time (T) and parity (P) symmetry and by the virtue of the CPT theorem also the combined symmetry of charge conjugation and parity inversion (CP). Searches for EDM are generally considered highly sensitive probes for new physics and might shed light on still unresolved questions in particle physics and cosmology like the...
The SoLAr detector concept, aims to extend the sensitivities of LArTPC detectors to the MeV energy range, and expands their physics reach to observe solar neutrinos and potentially supernovae neutrinos.
The core concept is centered around an integrated charge-light readout plane, consisting of pixel pads for charge collection and VUV SiPMs for direct de- tection of LAr scintillation light....
