The 16th Particle Physics Phenomenology Workshop

Session

Parallel Session R019

17 Jun 2026, 14:25

NTHU

Conveners

Parallel Session R019

• Mohamed Krab

Parallel Session R019

• Jan Tristram Acuña (Department of Physics, National Tsing Hua University)

11. Cosmological Correlators with Double Massive Exchanges: Bootstrap Equation and Phenomenology

Fumiya Sano (UTokyo)

17/06/2026, 14:25

Oral presentation

Using the recently developed cosmological bootstrap method, we compute the exact analytical solution for the seed integral appearing in cosmological correlators with double massive scalar exchanges. The result is explicit, valid in any kinematic configuration, and free from spurious divergences. It is applicable to any number of fields’ species with any masses. With an appropriate choice of...

6. SUSY and non-SUSY analysis of truly confining gauge theories

Shota Saito (The University of Tokyo, Kavli IPMU)

17/06/2026, 14:50

Oral presentation

We classify 4D N=1 truly confining supersymmetric gauge theories, in which no center charges can be screened. This property guarantees that Wilson loops in the fundamental representation exhibit an area law. We systematically identify all such theories for simple Lie groups and determine the allowed matter content. In each theory, we find condensing magnetic operators, which are expected to...

40. Number Theory and Minicharged Particles

Junseok Lee (Tohoku University)

17/06/2026, 15:05

Oral presentation

In quantum gauge theories, anomaly cancellation severely restricts the allowed patterns of chiral charges. We will see that, in a phenomenologically motivated framework for light minicharged particles, the anomaly cancellation conditions are equivalent to the degree $k=3$ Prouhet-Tarry-Escott problem in number theory. This correspondence immediately implies that the hidden sector must contain...

43. Half-sky Dark Matter Line Search using eROSITA DR1

Chingam Fong (The Chinese University of Hong Kong)

17/06/2026, 15:20

Oral presentation

The search for Dark Matter (DM) signatures in the X-ray sky remains essential for testing models of decaying keV dark matter, such as sterile neutrinos and axions. With its coverage and survey depth, eROSITA provides unprecedented sensitivity to keV dark matter. We present a search for X-ray lines using all available data from the eROSITA Data Release 1 (DR1), and interpret the result in the...

30. Probe for Heavy Dark Matter with Gravitational Wave Detectors

Bo-Yu Lin (NTHU, Taiwan)

17/06/2026, 16:00

Oral presentation

We probe dark matter with gravitational wave detectors by introducing an additional Yukawa-like interaction between dark matter and the detector. In this talk, we investigate the signal induced by kg-scale dark matter in an interferometer, and an algorithm to distinguish the signal from the noise in the detector.

44. Constraining memory-burdened primordial black holes with graviton-photon conversion and binary mergers

Yu Min Yeh (National Tsing Hua University)

17/06/2026, 16:15

Oral presentation

The memory-burden effect stabilizes the evaporating Primordial Black Holes (PBHs) before its complete decay. This also suppresses the evaporation flux via the entropy factor to the $k$-th power and circumvents severely astrophysical and cosmological constraints, such that it opens a new mass window for PBH Dark Matter lighter than $10^{15}$ g which has entered the memory-burden phase in the...

42. Constraints on extended axion structures from the lensing of fast radio bursts

Kuan-Yen Chou (Department of Physics, National Tsing Hua University)

17/06/2026, 16:30

Oral presentation

Axions are hypothetical pseudoscalar particles that have been regarded as promising dark matter (DM) candidates. On the other hand, extended compact objects such as axion stars, which are supported by gravity and axion self interactions, may have also been formed in the early Universe and comprise part of DM. In this work, we consider the lensing of electromagnetic signals from distant sources...

36. Circumstellar Medium of Supernovae as New Probes for Feebly-interacting Particles

Yen-Hsun Lin (Academia Sinica)

17/06/2026, 16:45

Oral presentation

We propose a novel strategy to probe feebly-interacting particles (FIPs) by exploiting the dense, confined circumstellar medium (CSM) surrounding core-collapse supernovae (CCSNe). FIPs produced in the proto-neutron star can deposit substantial visible energy into the CSM via decay prior to the shock breakout from the progenitor star. This energy injection heats and ionizes the CSM,...

60. Bounds on exotic couplings from a new neutrino background

Ujjal Kumar Dey (IISER Berhampur)

17/06/2026, 17:10

Oral presentation

The existence of a rapidly spinning black hole and an ultralight boson capable of forming superradiant cloud around it can provide a non-zero lower bound on fermion couplings with the ultralight bosons. We propose that a manifestation of it in terms of neutrinos can provide a minimal and concrete realization of the mechanism and can produce a diffuse cosmic background of neutrinos. In this...

38. Machine Learning Detection of Non-Axisymmetric Fast Flavor Instabilities in Compact Objects

Madhurima Chakraborty (Institute of Physics, Academia Sinica, Taipei, Taiwan)

17/06/2026, 17:35

Oral presentation

Neutrinos in dense astrophysical environments such as core-collapse supernovae (CCSNe) and neutron star mergers (NSM) can undergo FFCs, which could develop on extremely small scales. A necessary condition for the occurrence of FFCs is the presence of a zero crossing in the electron lepton number (ELN) angular distribution of neutrinos. In this work, we explore machine learning (ML) approaches...