PASCOS 2026

Session

Particles

22 Jun 2026, 09:30

Richard Roberts Auditorium

Conveners

Particles

• Carsten van de Bruck

Particles

• Andreas Ringwald

Particles: Neutrino Physics

• Pasquale Di Bari
• IVAN MARTINEZ SOLER (Durham University and IPPP)

Particles: Dark Matter

• Christopher McCabe (King's College London)
• Adam Brown (University of Sheffield)

Particles

• Sebastian Trojanowski

Particles: joint BSM and Flavour & DM experiments

• Adam Brown (University of Sheffield)
• Christopher McCabe (King's College London)
• William Barter (University of Edinburgh)
• Sarah Williams

Particles

• There are no conveners in this block

Particles: Beyond the Standard Model & Flavour Physics

• Sarah Louise Williams (University of Cambridge (GB))
• William Barter (University of Edinburgh)

Particles: Higgs & Electroweak

• Peter Millington (University of Manchester)
• Chris Hays (University of Oxford (GB))

217. Axion Physics and Detection

Andreas Ringwald

22/06/2026, 09:30

We review the motivation for the axion as a solution of the strong
CP puzzle. We discuss benchmark axion models and present their predictions concerning
(i) axion couplings to the Standard Model and (ii) axion dark matter abundance.
We give an overview on the discovery potential of current and planned
axion experiments, reaching from direct production and detection
of axions in the...

218. X-ray Smoking Guns from Galactic Center Compact Stars: A New Probe of Inelastic Dark Matter

Sebastian Trojanowski

22/06/2026, 10:05

An inelastic structure is a classic feature of many dark matter (DM) models arising from symmetry breaking, and investigating transitions between states with small mass splittings allows for the identification of unique, detectable signatures. While such inelasticity is a characteristic hallmark of well-motivated scenarios like Higgsino DM, it leads to particularly striking phenomenology in...

224. Direct Detection of Dark Matter: Status and Prospects

Sally Shaw (University of Edinburgh)

22/06/2026, 16:15

Despite overwhelming astrophysical evidence that approximately 84% of the matter in the Universe is dark and fundamentally distinct from ordinary matter, terrestrial experiments searching for direct interactions of dark matter particles have yet to observe a convincing signal. Over the past two decades, dramatic gains in experimental sensitivity have been driven by the development of liquid...

225. Direct Searches for New Physics at the LHC: From Run 2 to the HL-LHC Era

Iacopo Vivarelli (Universita e INFN, Bologna (IT))

22/06/2026, 16:50

This talk will review the status of direct searches for physics beyond the Standard Model at the LHC, from the mature Run 2 programme to the emerging Run 3 landscape and the prospects of the HL-LHC era. After a broad overview of established search programmes—including supersymmetry, dark matter, heavy resonances —the discussion will focus on what is genuinely new in Run 3: not simply increased...

185. DMRadio: A lumped-element, low-mass axion search

Andrew Yi (SLAC National Accelerator Laboratory)

23/06/2026, 14:15

Contributed Talk

The QCD axion is a particle that has been postulated to be a solution to the strong CP problem and also a candidate for dark matter in the universe. The DMRadio suite of experiments is a resonant, lumped-element search that probes low mass axions below 1 $\mu$eV. To achieve the necessary sensitivities, the development of DMRadio involves high-field DC magnets of various geometries, tunable...

245. Status of three-flavor neutrino oscillations and the lessons from the first JUNO results

Ivan Esteban

23/06/2026, 14:15

Neutrino oscillation measurements are entering a precision era, with many parameters being measured at the percent level. However, unknowns related to 3-neutrino effects remain. Determining these unknowns is important for open questions in, e.g., cosmology; but it is also key to test the global consistency of the framework and fully establish or break the 3-neutrino paradigm.
In this talk, I...

68. Beyond 3→2: Towards Realistic SIMP Dark Matter

Halvor Melkild (University of Oslo)

23/06/2026, 14:35

Contributed Talk

Strongly interacting dark sectors with pseudo–Nambu–Goldstone bosons provide a versatile framework for sub-GeV dark matter. While the original SIMP paradigm emphasises number-changing processes as the origin of the relic abundance, the phenomenology of pionic dark matter is considerably richer. Depending on the spectrum and couplings, the relic density can WIMP-annihilations,...

246. First Physics Results from JUNO

Xianguo Lu

23/06/2026, 14:35

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20-kton liquid-scintillator detector designed to determine the neutrino mass ordering and perform precision measurements of neutrino oscillation parameters using reactor antineutrinos. Following the start of physics data taking in August 2025, JUNO has recorded its first reactor antineutrino sample and reported world-leading...

247. Status and Opportunities of the Hyper-Kamiokande Experiment

George Burton

23/06/2026, 14:50

The Hyper-Kamiokande (Hyper-K) experiment is the third generation of underground water Cherenkov detectors in Japan. It will serve as (1) the far detector for a long-baseline neutrino oscillation experiment for the upgraded, 1.3 MW power J-PARC muon neutrino/antineutrino beam, and (2) a detector capable of observing proton decays, atmospheric neutrinos, and neutrinos from astronomical sources....

86. Cornered But Alive: GeV-scale Thermal Dark Matter From Dark Photons

David Alonso-González (IFT (UAM-CSIC))

23/06/2026, 14:55

Contributed Talk

GeV-scale thermal dark matter is often considered to be strongly constrained by the null results of direct, indirect, and collider searches. Nevertheless, viable scenarios can still arise in well-motivated dark sector frameworks. In this talk, we explore this possibility in a dark Abelian Higgs model with a Dirac fermion dark matter candidate interacting with the Standard Model through a dark...

135. Towards the final analysis of the KATRIN data

Karo Erhardt (KIT)

23/06/2026, 15:05

Contributed Talk

The KATRIN experiment aims at direct kinematic measurement of the neutrino mass with the expected sensitivity below 300 meV (90% CL), performing a high-resolution, high-statistics spectroscopy of tritium beta-decay. To reach such sensitivity, the systematic effects, modifying the measured electron spectrum shape have to be modeled and controlled by dedicated calibration measurements.
KATRIN...

124. Heavy dark matter in rapidly evolving massive stars

Giorgio Busoni (Adelaide University)

23/06/2026, 15:15

Contributed Talk

Dark matter (DM) constitutes most of the matter content of the Universe, yet its particle nature remains unknown. While laboratory searches and cosmological probes have placed strong constraints on many candidate models, astrophysical environments provide a complementary avenue to test DM interactions under extreme conditions. Stars are particularly promising laboratories: as they move through...

106. Search for keV Sterile Neutrinos with the KATRIN Experiment

Leo Laschinger (MPIK, TUM)

23/06/2026, 15:19

Contributed Talk

The KATRIN experiment is designed to measure the mass of the electron anti-neutrino by studying the high energy end of the tritium β decay spectrum. In addition, KATRIN is also a well suited instrument to explore the sterile neutrino hypothesis. The existence of sterile neutrinos would cause a kink-like distortion in the spectrum.
Using the same datasets as for the active neutrino mass,...

212. KATRIN++: Towards a next-generation neutrino mass experiment using tritium beta decay

Svenja Heyns (Karlsruhe Institute of Technology)

23/06/2026, 15:32

Contributed Talk

After completing 1000 days of data taking at the KATRIN experiment, the collaboration expects to reach a final sensitivity on the effective anti-electron neutrino mass below 300 meV. However, neutrino oscillation observations allow the value to be as low as 50 meV or 9 meV, depending on the neutrino mass ordering. Taking the next step in direct neutrino-mass searches includes probing the...

213. A Solar Probe of Dark Matter Decay in the Galaxy

Maximilian Detering (King's College London)

23/06/2026, 15:35

Contributed Talk

Dark matter (DM) decay in the Galactic halo injects energetic $e^\pm$ that can inverse-Compton scatter (ICS) solar photons into $\gamma$ rays, producing a diffuse halo of emission around the Sun. We present the first quantitative study of this signal as a probe of decaying DM. Using 15 years of Fermi-LAT solar-halo data, we compute the heliocentric ICS signal and derive limits on the DM...

133. A possible solution to the gallium anomaly moving beyond the leptonic wave function factorization

Luca Ferro (INFN Cagliari, University of Cagliari)

23/06/2026, 15:45

Contributed Talk

For over three decades, the gallium anomaly, a persistent discrepancy exceeding 5σ between measured and predicted neutrino capture rates on gallium-71 in the GALLEX, SAGE, and BEST experiments, has challenged the particle physics community. While frequently interpreted as evidence for short-baseline sterile neutrino oscillations, this scenario is increasingly in tension with recent bounds from...

271. Coffee Break

23/06/2026, 15:55

249. Coffee Break

23/06/2026, 16:00

197. Cosmological signals of dark matter semi-annihilation

Alessia Musumeci (Technical University of Munich)

23/06/2026, 16:15

Contributed Talk

In different classes of models, semi-annihilation of Dark Matter (DM) can set the DM relic abundance. One of the most interesting features of this scenario is the generation of a boosted DM component (BDM), as part of the energy of the initial state is converted into kinetic energy of the DM particle in the final state. In this work, we consider the process $\chi \chi \to \chi^c\,\nu$, which...

77. Non-Adiabatic Mixing in Density Matrix Formalism

Shreya Girishkumar Pandit (University of Southampton)

23/06/2026, 16:20

Contributed Talk

Description of quantum coupling is a universal problem appearing in many different fields (NMR, quantum computing, molecular and atomic physics,...). In particle physics, it applies to particle mixing, underlying neutrino oscillations and resonant particle production (applicable beyond these two) in different environments, of great importance in many BSM scenarios. I will discuss non-adiabatic...

169. Filtered dark matter from strong first order phase transitions

Satumaaria Sukuvaara

23/06/2026, 16:35

Contributed Talk

While cooling down, the early universe is believed to have undergone symmetry breaking phase transitions. One attractive possibility for extending the Standard Model is that these phase transitions are of the first order, as they might be able to produce observable gravitational waves. We consider a dark matter freeze-out mechanism, filtering, where dark matter particles become massive in a...

187. From CUORE to CUPID: Toward a Next Generation Search for Neutrinoless Double Beta Decay

Francesca Pucci

23/06/2026, 16:35

Contributed Talk

The search for neutrinoless double beta decay (0νββ) is fundamental for investigating lepton-number violation, probing new physics beyond the Standard Model, and determining whether neutrinos are Majorana particles. CUORE, a cryogenic calorimetric experiment at LNGS, studies 0νββ in $^{130}$Te using 988 TeO₂ crystals, reaching a tonne-scale mass and operating below 15 mK. Since 2017, CUORE has...

140. Search for the Majorana Nature of Neutrino with the LEGEND Experiment

Alex Biondi (Jagiellonian University in Krakow)

23/06/2026, 16:50

Contributed Talk

Search for the Majorana Nature of Neutrino with the LEGEND Experiment

A. Biondi on behalf of the LEGEND Collaboration

Observation of the neutrinoless double beta (0$\nu\beta\beta$) decay would establish that neutrinos are Majorana particles and demonstrate violation of lepton number, providing a key ingredient for understanding the origin of neutrino masses and the matter-antimatter...

210. No room for monopole dark matter

Théodore Fischer (LUPM)

23/06/2026, 16:55

Contributed Talk

The magnetic monopole of a dark sector has been advocated as an appealing dark matter candidate, since its stability naturally follows from topological arguments. I will revisit the computation of the monopole abundance generated by a thermal phase transition, exploring the three regimes where the phase transition is second order, weakly first order, or supercooled. This will allow us to...

125. Beyond the Standard Model investigations at CONUS+

Dario Piani (Max-Planck-Institut für Kernphysik)

23/06/2026, 17:05

Contributed Talk

The detection of coherent elastic neutrino-nucleus scattering (CEνNS) opens up new opportunities for neutrino physics within and beyond the standard model (BSM) of elementary particles. The first detection of CEνNS at nuclear reactors by the CONUS+ experiment allows very valuable tests of BSM scenarios in a low momentum transfer regime. Among them, Non Standard Interactions (NSIs), light...

120. The NUCLEUS experiment for Coherent Elastic Neutrino-Nucleus Scattering

Matteo Cappelli (Sapienza Università di Roma e INFN, Roma I (IT))

23/06/2026, 17:20

Contributed Talk

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) offers a broad range of physical and technological applications. First predicted in 1974 and remained undetected until 2017, the process is currently entering the era of precision measurements. For this purpose, low energy neutrinos from nuclear reactors represent an ideal source, enabling the investigation of CE$\nu$NS in the fully...

234. Advancing the Neutrino Frontier to the Megaton Regime and Beyond

Francesca Di Lodovico (University of London (GB))

24/06/2026, 11:15

Neutrinos offer one of the most promising windows onto physics beyond the Standard Model, from leptonic CP violation and the mass ordering to nucleon decay and astrophysical neutrinos. This talk presents the discovery potential of large neutrino detectors, focusing on the Japanese water-Cherenkov programme whose reach spans accelerator, atmospheric, solar and supernova neutrinos as well as...

235. Exploring Sterile Neutrinos and the Dark Sector with MicroBooNE

Stefan Soldner-Rembold

24/06/2026, 11:50

76. An exploration of the NMSSM using deep learning to fit hints of new scalars

Raymundo Ramos (Korea Institute for Advanced Study)

25/06/2026, 09:10

Contributed Talk

In this talk we discuss a recent search over the parameter space of the Next-to-Minimal Supersymmetric Standard Model using deep learning techniques. The particular focus of this search is identifying parameter values that explain hints of excesses around 95 GeV and 650 GeV in Higgs studies, and a discrepancy in Electro-Weakino searches, as well as predicting mono-H and mono-Z signatures of...

114. Searches for new physics using unconventional signatures and techniques with the ATLAS detector

Sergei CHEKANOV

25/06/2026, 09:30

1

Contributed Talk

Many theories beyond the Standard Model (SM) have been proposed to address several of the SM shortcomings. Some of these beyond-the-SM extensions predict new particles or interactions directly accessible at the LHC, but which would leave unconventional signatures in the ATLAS detector. Alternatively, these signatures could be relatively standard, but could benefit from unusual techniques....

115. Searches for new physics using conventional signatures with the ATLAS Detector

Selaiman RIDOUANI

25/06/2026, 09:50

Contributed Talk

Many theories beyond the Standard Model (SM) have been proposed to address several of the SM shortcomings, often predicting new particles which can be searched for at the LHC. This can include extended Higgs sectors, supersymmetric particles, heavy vectors or scalars, vector-like fermions, and further exotic particles. This talk will cover several related searches, focusing on prompt...

273. CMS Prompt BSM

Laurent Thomas

25/06/2026, 10:10

274. CMS Long-lived BSM

Thales Menezes De Oliveira

25/06/2026, 10:30

275. Coffee Break

25/06/2026, 10:50

181. Preparedness for Dark Matter Discovery at SuperCDMS SNOLAB

Junwen Xiong (Caltech)

25/06/2026, 11:10

Contributed Talk

The SuperCDMS SNOLAB experiment is currently being commissioned at the Canadian underground facility SNOLAB. The experiment uses four detector towers that contain 24 detectors in total, including both interleaved Z-dependent Ionization and Phonon (iZIP) and high-voltage (HV) detectors with germanium (Ge) and silicon (Si) targets. The iZIP detectors measure both charge and phonon signals and...

116. Searches for Dark Matter with the ATLAS Experiment at the LHC

Bernardo Ricci

25/06/2026, 11:30

Contributed Talk

The presence of a non-baryonic Dark Matter (DM) component in the Universe is inferred from the observation of its gravitational interaction. If Dark Matter interacts weakly with the Standard Model (SM) it could be produced at the LHC. The ATLAS Collaboration has developed a broad search program for DM candidates in final states with large missing transverse momentum produced in association...

40. Dark Matter Searches at PICO

Dr Mayank Tripathi (mtripathi@uchicago.edu)

25/06/2026, 11:50

Contributed Talk

The PICO collaboration operates bubble chambers to search for WIMP dark matter, leveraging the excellent gamma rejection and long live fractions enabled by operating at a lower degree of superheat than the bubble chambers of the 1960s. This advancement allows for significantly improved background rejection while maintaining sensitivity to nuclear recoils. Located at the SNOLAB underground...

200. Recent results from XENONnT

Sana Ouahada (University of Zurich)

25/06/2026, 12:10

Contributed Talk

The XENONnT experiment operates a liquid xenon time projection chamber at the INFN Laboratori Nazionali del Gran Sasso, designed to search for weakly interacting massive particles (WIMPs). Its ultra-low background rate and low energy threshold, achieved to maximize WIMP sensitivity, also enable the study of other rare processes.

In this talk, I will present the latest results from XENONnT....

236. TBA

Prof. MARTIN BAUER (IPPP Durham)

25/06/2026, 14:00

237. Latest results from the NA62 experiment

Dr Joel Swallow (INFN - Laboratori Nazionali di Frascati)

25/06/2026, 14:35

The NA62 experiment at the CERN north area was designed and built to study the $K^{+}\rightarrow\pi^{+}\nu\bar{\nu}$ decay. The $K^{+}\rightarrow\pi^{+}\nu\bar{\nu}$ decay is a golden mode for flavour physics, and became the rarest decay observed with a significance above 5 sigma following the NA62 measurement of...

238. Measurement of the ratios $R(D^{(*)}) = \mathcal{B}(B \to D^{(*)} \tau \nu) / \mathcal{B}(B \to D^{(*)} \ell \nu)$, using semileptonic tagging and leptonic $\tau$ decays with the $BABAR$ detector

Fergus Wilson (Science and Technology Facilities Council STFC (GB))

25/06/2026, 15:10

Semileptonic decays of $B$ mesons involving $\tau$ leptons are sensitive probes for physics beyond the Standard Model. The relative rates of the branching fractions $R(D) = \mathcal{B}(B \to D \tau \nu) / \mathcal{B}(B \to D \ell \nu)$ and $R(D^*) = \mathcal{B}(B \to D^* \tau \nu) / \mathcal{B}(B \to D^* \ell \nu)$, where $(\ell=e,\mu)$ are independent of the CKM element $|V_{cb}|$ and many...

95. CPT-Symmetric K"ahler-Dirac Fermions: Implication of the Standard Model and Cosmology

Wei-Ning Deng (Astrophysics Group, Cavendish Laboratory, Cambridge)

26/06/2026, 09:10

Poster

The CPT-Symmetric Universe model provides elegant solutions to major cosmological puzzles—including dark matter, the cosmological constant problem, and the universe's flatness puzzle—by positing that the Big Bang acts as a CPT mirror. However, the theoretical reason why the universe requires this mirror has remained an open question.

In this talk, we propose that the answer lies in the...

136. Higgs boson production and decay rate measurements with the ATLAS experiment

Ahmed MARKHOOS

26/06/2026, 09:10

Contributed Talk

With the Run 2 and Run 3 pp collision dataset collected by the ATLAS experiment at LHC, very precise measurements of Higgs boson production and decay rates can be performed, shedding light over the electroweak symmetry breaking mechanism. This talk presents the latest precise measurements of Higgs boson productions and decays, including fiducial, differential, as well as Simplified Template...

276. CPV in Heavy Flavour decays

Linxuan Zhu

26/06/2026, 09:30

75. V-associated production & vector boson fusion of Higgs bosons as an LHC signature of CP violation

Álvaro Lozano Onrubia (IFT UAM-CSIC & Universidad Autónoma de Madrid)

26/06/2026, 09:30

Contributed Talk

Many well-motivated extensions of the Standard Model predict new, entirely bosonic sources of CP violation (CPV). In these scenarios, the simultaneous observation of carefully selected bosonic processes emerges as a simple yet powerful method to unambiguously reveal the presence of CPV. The present study, which establishes a promising framework of CPV searches for the upcoming HL-LHC era,...

248. Natural Higgs mass from power-law running

KAng-Sin Choi (Ewha Womans University)

26/06/2026, 09:50

We revisit the renormalization of the Higgs mass using on-shell scheme. It is mass-dependent scheme and threshold correction is automatic. It clarifies that the renormalized Higgs mass $m^2(q^2)$ runs quadratically in the external momentum $q^2 \log q^2$ and the ratio $m^2(q^2)/q^2$ is order one up over all scale. The light Higgs mass is naturally explained by order one relation at the...

41. Quark and lepton mixing in the Asymptotic Safe Standard Model

Zois Gyftopoulos (Heidelberg University)

26/06/2026, 09:50

Poster

In this talk, I will explore the phenomenological consequences of Quantum Scale symmetry in the matter sector of the Standard Model with Asymptotically Safe Quantum Gravity. In particular, trans-Planckian quantum scale symmetry in the matter sector induced by Asymptotically Safe Quantum Gravity, leaves an imprint on some of the Standard Model parameters, namely the CKM mixing elements. We...

215. Higgs Criticality: Electroweak Vacuum Metastability as a Window to Beyond the Standard Model Physics

Maximilian Detering (King's College London)

26/06/2026, 10:10

Contributed Talk

This work proposes a direct link between the hierarchy problem and Weakly Interacting Massive Particles (WIMPs): we suggest that the small mass of the Higgs boson arises from being dynamically driven to the scale of the WIMP. Such a special electroweak vacuum is singled out by lying close to the critical boundary of a phase transition, as recently explored in a new class of cosmological...

148. Measuring the neutron Electric Dipole Moment for CP-violation searches beyond the standard model.

Katia MICHIELSEN (LPSC, Grenoble)

26/06/2026, 10:10

Contributed Talk

The n2EDM experiment aims to measure the neutron Electric Dipole Moment (EDM) with an unprecedented precision of $10^{-27} \, e$ cm.
The EDM is the interaction between the neutron spin and an external electric field. It is measured via precession frequency measurements on stored ultracold neutrons.
A better measurement of the nEDM probes CP-violation Beyond the Standard Model and allows...

20. Probing Cosmic Ray Composition and Muon-philic Dark Matter using GeV Muon sources

Andrew Michael Levin

26/06/2026, 10:30

Poster

We propose here a set of new proposals and some preliminary experimental results involving probing and knocking with muons (PKMu). There is a wealth of rich physics to explore with GeV muon beams either from dedicated beam or cosmic source. Examples include but not limited to: muon scattering can occur at large angles, providing evidence of potential muon-philic dark matter or dark mediator...

152. Toward a real-time theory of vacuum decay

Alex Jenkins (University of Cambridge)

26/06/2026, 10:30

Contributed Talk

False vacuum decay plays a pivotal role in many models of particle physics and the early Universe, from inflation to the electroweak vacuum. However, we lack a satisfying theoretical understanding of this process, with existing approaches working only in imaginary (Euclidean) time, and relying on assumptions that have yet to be empirically tested.
In this talk, I will describe ongoing efforts...

253. Coffee Break

26/06/2026, 10:50

278. Coffee Break

26/06/2026, 10:50

60. Cosmic Millicharged Background, Reheating, and Arithmetica Electrōrum

Yu-Dai Tsai (University of California, Irvine)

26/06/2026, 11:10

Contributed Talk

I will discuss the cosmic relic background of millicharged particles—hypothetical particles with electric charges much smaller than the electron’s—that may have been produced in the early universe and left an irreducible relic today. I will explain how experimental searches for these particles can provide novel probes of reheating cosmology, the poorly constrained epoch immediately after...

208. Search for the rare Higgs boson decay H -> Z gamma

Xingchen Fan (Cornell University (US))

26/06/2026, 11:10

Contributed Talk

We present a search for the rare Higgs boson decay H→Zγ using proton–proton collision data recorded by the CMS experiment at the LHC at center-of-mass energies of 13 and 13.6 TeV, corresponding to a total integrated luminosity of 200 fb⁻¹. The analysis targets final states where the Z boson decays to an electron or muon pair. Sensitivity is enhanced through dedicated event categorization...

117. Searches for New Physics in Effective Field Theory Approaches from ATLAS

Oleksii KURDYSH

26/06/2026, 11:30

Contributed Talk

We present two analyses searching for new physics in the context of effective field theory approaches from the ATLAS collaboration. The analyses use multiple experimental measurements across a range of processes in electroweak boson, top-quark and Higgs production to constrain dimension-6 operators. In addition multi-boson production measurements provide leading constraints on anomalous...

282. Searching for screened scalar forces with long-baseline atom interferometers

Christopher McCabe (King's College London)

26/06/2026, 11:30

If you need an abstract, here is one:
Screened scalars are ubiquitous in many dark-sector models. They give rise to nontrivial fifth forces while evading experimental constraints through density-dependent screening mechanisms. We propose equipping a 10 m-scale long-baseline atom interferometer with an annular planar source mass inside the vacuum chamber to search for such screened fifth...

165. Characterizing LHC-Resonances in extended HEFT

David Cabo Almeida (University of Göttingen)

26/06/2026, 11:50

Contributed Talk

In theories with extended scalar sectors, the lightest new scalar could be accessible at colliders. Instead of relying on simplified models, we describe such scenarios in a general and gauge-invariant way using an extended HEFT framework with a nonlinearly realized electroweak symmetry. The structure of the effective operators depends on the $SU(2)$ nature of the scalar in the UV, leading to...

84. Vector Resonances at Muon and Wakefield Colliders

Massimo Cipressi (SISSA)

26/06/2026, 11:50

Contributed Talk

We explore the potential of future high-energy lepton colliders to probe heavy vector resonances.
At wakefield colliders, intense beam-beam interactions produce radiation, called beamstrahlung,
which redistributes luminosity from the nominal energy across a broad spectrum of lower collision
energies. We show that this effect, conventionally viewed as a drawback, dramatically...

121. Quantum Entanglement Is Quantum: Insights from Diboson Systems at the LHC

AJAY Kaladharan

26/06/2026, 12:10

Contributed Talk

Polarisation and spin correlations in diboson systems are powerful probes for precision tests of the Standard Model and searches for new physics. More recently, viewing these observables through the lens of quantum information, such as assessing whether diboson systems exhibit quantum entanglement, has opened a compelling new frontier in these investigations. They also provide a unique...

99. Slow force carriers in particle physics and cosmology

Francesco Serra (Johns Hopkins University)

26/06/2026, 12:10

Contributed Talk

I show that gauge theory and gravity admit local modifications in which all local symmetries are broken, leading to new gapless modes universally coupled to matter. The new modes have small speed, which suppresses all their interactions with matter, making them compatible with current observations. No new scales or fundamental fields are introduced in this approach, as the new physical modes...

281. break

277. CMS

Xingchen Fan

216. TBA

Prof. John Ellis

51. The SHiP/NA67 experiment at the ECN3 high-intensity beam facility at the CERN SPS

Walter Marcello Bonivento (INFN Cagliari)

Contributed Talk

The SHiP/NA67 experiment is a general-purpose intensity-frontier experiment for the search for feebly interacting GeV-scale particles and to perform neutrino physics measurements at the HI-ECN3 (high-intensity) beam facility at the CERN SPS, operated in beam-dump mode, taking full advantage of the available $4\times 10^{19}$ protons per year at 400 GeV. The collaboration is currently...