High Energy Physics - Phenomenology Papers of the Week

The effective Majorana mass is the length of a sum of three complex electron-flavour contributions. A mass-generation model determines both their sizes and how they cancel.

We concentrate on the modifications to the atmospheric neutrino energy and angular spectra induced by one new oscillation frequency associated with the $\nu_3$ state and determine the parameter space that can be probed with atmospheric neutrinos at a DUNE-like detector.

We investigate how far contemporary LLM-based agents can participate in multistep computational high-energy-physics research under reproducible human supervision.

We perform a NNLO perturbative QCD analysis for exclusive double charmonium production $e^+e^-\to J/\psi+\eta_c$ within the NRQCD factorization formalism using the Principle of Maximum Conformality (PMC).

Topological fluctuations in the quark-gluon plasma can generate local chiral imbalances whose spatial coherence remains difficult to access with conventional charge-separation measurements. We propose differential hyperon-pair spin correlations as a probe of both the strength and spatial organization of these fluctuations.

Using $SU(2)_L$ gauge invariance we show that the dual axion couples to electrons as $g_{a\gamma}g_{ae}=m_e/\Lambda_*^2\simeq5\times10^{-12}\,\mathrm{GeV}^{-1}$.

Because of the fermion doubling problem, it has been a longstanding challenge to describe a lattice algorithm for studying four-dimensional gauge theories coupled to chiral fermions.

Around supermassive black holes, however, orbiting stars and compact objects act as a perturbation that drains energy from the cloud, potentially preventing its formation altogether. In this work, we quantify under what conditions this happens, focusing on bound-free state transitions.

We find preSNe bounds on dark photon couplings up to two orders of magnitude stronger than SNe for masses between 1 and 3~MeV, with similar improvements for other electrophilic species such as axion-like particles.

We present a systematic study of the spin evolution of accreting black holes.

We derive the wave functional of the field on the nucleation slice from the half-bounce path integral, and use it to compute the root-mean-square quadrupole moment of a bubble at nucleation.

A finite test body is nevertheless not a passive probe: it distorts the scalar field that accelerates it. We show that this field distortion produces a differential acceleration between concentric test masses, even when their microscopic coupling is universal.

We propose a staged program in which quantum simulations first provide qualitative modifications to event generators and later provide quantitative input.

We present the first combined phenomenological study of non-global and super-leading logarithms in vector-boson-fusion Higgs production and its QCD-induced Higgs-plus-dijet background.

We study the discovery potential for a CP-even heavy neutral Higgs boson $H$ in the Type-I two-Higgs-doublet model (2HDM) at a future $e^+e^-$ collider with $\sqrt{s}=500~\mathrm{GeV}$, focusing on the process $e^+e^-\to ZH$ with $H\to WW$, and with $Z\to\ell\ell$ or $Z\to\nu\nu$.

We investigate the cosmological implications of supermassive primordial black holes (PBHs) as a component of dark matter (DM), focusing on their seed effect on large-scale structure formation.

We propose a new set of functions, named Relative Spin Wave Functions (RSWFs), defined via covariant pure boosts to a common rest frame.

We perform the first (3+1)-dimensional lattice simulations of a cosmological first-order phase transition (PT) in which true-vacuum bubbles with random phases nucleate, expand, and collide, producing a network of global strings.

We consider the possibility that a PBH dominated era yields a population of boosted axion-like particles (ALPs) produced from Hawking evaporation.