NNV section for (astro)particle physics fall meeting

Session

Parallel Sessions (II)

8 Nov 2024, 13:50

Kontakt der Kontinenten

Conveners

Parallel Sessions (II): Session 2C - gamma

• Dylan van Arneman

Parallel Sessions (II): Session 2B - beta

• Maricke Flierman

Parallel Sessions (II): Session 2A - alpha

• Andrii Usachov

4. Glitch mitigation using the null stream: A science case for the triangular design of the Einstein Telescope

Harsh Narola (Utrecht University)

08/11/2024, 13:50

Gravitational wave observatories frequently encounter noise transients, called glitches, that overlap with the signal. The glitches need to be carefully reconstructed and subtracted before analysing the signal. When the glitches do not overlap with the signal, the data surrounding it is simply discarded. For the proposed third-generation interferometers, such as the Einstein Telescope, most...

1. Quark-Hadron Duality Violations and Higher-Order $1/m_b$ Corrections in Inclusive Semileptonic $B$ Decays

Rens Verkade (Nikhef, Maastricht University)

08/11/2024, 13:50

The Heavy Quark Expansion (HQE) is one of the leading tools for calculating decay rates and kinematic moments of inclusive semi-leptonic B-meson decays ($B\to X_c\bar{\nu }l$). The HQE is an Operator Product Expansion (OPE) in terms of the inverse of the mass of the heavy bottom quark ($1/m_b$). It introduces nonperturbative HQE parameters which can be determined using...

3. TrackHHL: LHCb Track Reconstruction using novel quantum algorithms

Xenofon Chiotopoulos

08/11/2024, 13:50

The imminent high-luminosity era of the Large Hadron Collider (LHC) presents significant computational challenges for event reconstruction in high-energy physics. This study investigates a novel approach to charged particle track reconstruction, using the LHCb vertex locator as a case study. Our method employs an Ising-like Hamiltonian minimization through matrix inversion, achieving...

12. Fairness

Karel de Vries

08/11/2024, 14:10

In social sciences, fairness in Machine Learning (ML) comprises the attempt to correct or eliminate algorithmic bias of gender, ethnicity, or sexual orientation from ML models. Many high-energy physics (HEP) analyses that search for a resonant decay of a particle employ mass-decorrelated event classifiers, as the particle mass is often used to perform the final signal extraction fit. These...

18. Searches for Heavy Neutral Leptons in the ATLAS Experiment

Edwin Chow

08/11/2024, 14:10

Heavy Neutral Leptons (HNLs) are theoretical particles predicted by Beyond the Standard Model (BSM) physics, often introduced to explain phenomena such as neutrino masses and the matter-antimatter asymmetry in the universe. HNLs, particularly those of the Majorana type, can induce lepton number violating processes, making them a subject of great interest. This talk presents the HNL searches...

13. Status and progress on the NL-eEDM experiment

Jelmer Levenga (Nikhef/Van Swinderen Institute for Particle Physics and Gravity at RUG)

08/11/2024, 14:10

The NL-eEDM experiment aims to set a new limit on the permanent electric dipole moment of the electron (eEDM), in order to constrain CP-violation as it appears in many standard model extensions. We use an all-optical method to probe properties of the barium-fluoride (BaF) molecule. A novel spin-precession method permits identification of possible false EDM signals from the optical signal[1]....

32. Enrichment of heavy calcium isotopes in a molten salt

Mr Wicher van Bree (Radboud University)

08/11/2024, 14:30

Calcium-48 is an important isotope of calcium for scientific research.
It has been instrumental in the discovery of the heaviest elements and
has great potential in the search for neutrinoless double-beta decay.
Unfortunately its natural abundance is only 0.18% and the production
costs are around 0.5M€/g. We report on a method to enrich heavy calcium.
Our method using a low melting-point...

2. Long-Lived Sterile Neutrinos and Minimal Left-Right Symmetry

Jelle Groot (University of Amsterdam)

08/11/2024, 14:30

An investigation of relatively light (GeV-scale), long-lived right-handed neutrinos is performed within minimal left-right symmetric models using the neutrino-extended Standard Model Effective Field Theory framework. Light sterile neutrinos can be produced through rare decays of kaons, D-mesons, and B-mesons at the Large Hadron Collider (LHC) and the Long-Baseline Neutrino Facility (LBNF) of...

20. Search for heavy diboson resonances in semileptonic final states

Elizaveta Cherepanova (Nikhef)

08/11/2024, 14:30

Many theories beyond the Standard Model predict the existence of new heavy bosons. Some of them can decay into SM dibosons (WW, WZ, ZZ, Wh, and Zh) in semi-leptonic final states. This work is the second round of the analysis that combines two separate analyses: VV and Vh (V is either Z or W boson). Harmonization of VV and Vh and all the leptonic channels is done to make it less complex, but...