EPIC 2024: Electroweak Physics InterseCtions

Session

Poster Jamboree

24 Sept 2024, 17:50

CalaSerena, Geremeas, Sardinia (Italy)

Conveners

Poster Jamboree

• Nicola Cargioli

Presentation materials

EPIC_Teasers.pdf

Poster_List.pdf

15. 331 models and bilepton searches at the LHC

Roberta Calabrese

Poster

Despite being remarkable predictive, the Standard Model leaves unanswered several important issues, which motivate an ongoing search for its extensions. One fashionable possibility are the so- called 331 models, where the electroweak gauge group is extended to $SU_L(3)\times U(1)$. We focus on a minimal extension which includes vector-like quarks (VLQs) and new gauge bosons, performing a...

25. A recipe for improving CKM unitarity bounds via nuclear theory

Mr Michael Gennari

Poster

Recent analysis of Fermi decays by C.Y. Seng and M. Gorshteyn and the corresponding $V_{ud}$ determination have revealed a degree of tension with Cabibbo-Kobayashi-Maskawa (CKM) matrix unitarity, confirmation of which would indicate several potential deficiencies within the Standard Model (SM) weak sector. Extraction of $V_{ud}$ requires electroweak radiative corrections (EWRC) from theory to...

33. An improved description of neutrino emission from SN1987A

Giuseppe Matteucci (Università degli Studi di Napoli Federico II)

Poster

Neutrinos from core-collapse supernovae are a crucial target of many ongoing experiments; their detection, in an age of advanced instrumentation, promises to lead to powerful insights in the fields of astrophysics, nuclear physics and particle physics. Current efforts directed to ab initio simulations, although increasingly refined, are still limited in providing an entirely reliable...

26. Constraining the nuclear matter equation of state from electromagnetic observables in finite nuclei

Francesca Bonaiti (JGU Mainz)

Poster

Nuclear electromagnetic observables, such as electric dipole polarizabilities and isoscalar monopole resonances, provide a unique connection between nuclear structure studies and astrophysics. In fact, they strongly correlate with parameters determining the nuclear matter equation of state at saturation density, shedding light at the same time on the collective excitations of the nucleus at...

50. Constraints on New Physics in SMEFT Framework

vigneshwaran palaniappan (Johannes Gutenberg Universität)

Poster

Constraints on New Physics in SMEFT Framework

44. Electron Scattering Experiments for Neutrino Physics at MAMI

Mr Luca Wilhelm (JGU Mainz)

Talk

The groundbreaking discovery of neutrino oscillations represents a concrete indication of new physics and the measurement of the oscillation parameters has the potential to unlock new knowledge on the fundamental building blocks of matter.
For measuring the neutrino properties to percent-level precision, a new era of accelerator-based experiments was started. For those experiments, the...

17. High-Precision Calculation of Nuclear Spin Dependent Parity Violation in 133Cs

ARUP CHAKRABORTY

Poster

The investigation of parity violation (PV) effects in atomic systems, where weak and electromagnetic interactions interact, carries significant implications for atomic, nuclear, and particle physics. The study of nuclear spin dependent (NSD) parity violation provides crucial tests of the Standard Model’s (SM) predictions, probing for deviations that could indicate the presence of new physics...

29. Low-Energy Global Analysis for Electroweak and Nuclear Physics

Mattia Atzori Corona (University of Cagliari; INFN of Cagliari)

Poster

Electroweak physics at low energies remains relatively unexplored. Even though different probes exist, the extraction of the weak mixing angle at low energy is often correlated with the poorly known radius of the neutron distribution of the element used in the experiment, leading to an unclear understanding of the consistency across different probes. To provide a comprehensive overview, we...

48. Neutrino-Argon Quasi-Elastic Scattering within the Spectral Function Approach

Aya El Boustani

Poster

Neutrino interactions with nuclei are crucial for understanding neutrino properties and for interpreting data from neutrino oscillation experiments. This study focuses on developing a realistic theoretical model, known as the factorized spectral function approach, to investigate neutrino-nucleus quasi-elastic scattering. The spectral function, under certain assumptions, is interpreted as the...

21. New Physics contributions to atomic spectra

Sotiris Pitelis (JGU Mainz)

Poster

Atomic spectroscopy experiments at the precision frontier allow us to study low-energy nuclear structure, test bound-state QED, refine fundamental constants, and potentially find New Physics. As experimental precision is continuously improved, it is a timely task to re-examine the sensitivity of specific bound states to New Physics scenarios.

Depending on their Bohr radii, hydrogen-like...

20. NUCLEUS: recent results and prospects

Marco Giammei

Poster

Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) is an interaction well predicted by the Standard Model. Its large cross-section allows to study neutrinos with relatively small detectors. Precision measurement of the CEvNS cross-section is a way to study neutrino properties and search for new physics beyond the Standard Model. The NUCLEUS experiment aims to detect and characterize CEvNS...

36. Proton leading scalar and spin polarisabilities from proton Compton scattering data

Timon Esser (Johannes Gutenberg-University Mainz)

Poster

We present the results of a partial wave analysis of the global real Compton scattering (RCS) database, extracting the leading scalar and spin polarisabilities of the proton.

Exploring the nucleon using electromagnetic probes reveals a fine and intricate interplay between its various structural properties. As an example, the nucleon polarisabilities encode the two-photon response, such as...

28. Scaling in lepton-nucleus scattering

Immo Christopher Reis

Poster

The accuracy of theoretical predictions for neutrino-nucleus scattering is a critical factor limiting the precise extraction of neutrino oscillation parameters in long-baseline experiments. To address this, we analyze electron-nucleus scattering in the quasi-elastic regime using the scaling method, where we abstract the scattering process from specific kinematics. We investigate the impact of...

37. Simultaneous Extraction of the Weak Radius and the Weak Mixing Angle from Parity-Violating Electron Scattering on Carbon-12

Nicola Cargioli

Poster

Parity-violating electron scattering (PVES) on neutron-rich nuclei has proven to be a unique way to probe nuclear matter through the weak interaction. The same process measured on lighter nuclei represents a powerful way of extracting the weak mixing angle, a key parameter of the electroweak theory, in the low energy regime, thus allowing one to perform crucial tests of the Standard Model...

34. The Mainz Radius EXperiment (MREX): setup optimization and uncertainty prediction

Nikita Kozyrev

Poster

The neutron skin (NS) is a phenomenon of increased neutron to proton density ratio at the nuclear periphery. It is a prominent probe of the nuclear equation of state, connecting nuclear physics and astrophysics. The PREX experiment was the first to determine the NS in $^{208}$Pb through parity-violating electron scattering but had great uncertainty in the resulting NS thickness. The Mainz...

35. The n2EDM experiment at PSI

Wenting Chen

Poster

Precision measurements of permanent electric dipole moments (EDM) are among the most sensitive methods for exploring physics beyond the Standard Model of particle physics, particularly regarding charge-parity (CP) violation. The international nEDM collaboration at the Paul Scherrer Institut (PSI) aims to search for the neutron EDM with a sensitivity an order of magnitude higher than the...

42. Three-nucleon neutrinoless double beta decay potentials in chiral EFT

Graham Chambers-Wall

Poster

The observation of neutrino oscillations and therefore non-zero neutrino masses provides a clear signature for physics beyond the Standard Model. However, the origin of these masses and whether neutrinos are Dirac or Majorana particles remains an open question. Searches for neutrinoless double beta decay ($0\nu\beta\beta$), a signature of Majorana neutrinos and new physics, is a focus of the...

46. Variation of the Quadrupole Hyperfine Structure and Nuclear Radius due to an Interaction with Scalar and Axion Dark Matter

Andrew Mansour

Poster

Atomic spectroscopy is used to search for the space-time variation of fundamental constants which may be due to an interaction with scalar and pseudoscalar (axion) dark matter. In this Letter, we study the effects that are produced by the variation of the nuclear radius and electric quadrupole moment. The sensitivity of the electric quadrupole hyperfine structure to both the variation of the...

22. W-boson total width formula

Rolando Martinez Ramirez (Johannes Gutenberg-Universität Mainz (JGU))

Poster

We present our progress towards a simplified analytical one-loop expression of the $W$-boson total width, expanding linearly in the fermion masses. We compare our results with previous studies where infinite terms are not explicitly subtracted.