Results 81 to 90 of about 504 (172)

ALP leptogenesis: non-thermal right-handed neutrinos from axions

Journal of High Energy Physics
Abstract We propose a novel realisation of leptogenesis that relies on the out-of-equilibrium decay of an axion-like particle (ALP) into right-handed Majorana neutrinos (RHNs) in the early Universe. With respect to standard thermal leptogenesis, our mechanism lowers by two orders of magnitude the RHN mass, or the tuning in the RHN ...
Martina Cataldi, Alberto Mariotti, Filippo Sala, Miguel Vanvlasselaer   +3 more
openaire   +5 more sources

Choroid plexus remodeling linked to impaired CSF‐mediated clearance and Alzheimer's disease progression

Alzheimer's &Dementia, Volume 22, Issue 6, June 2026.
Abstract INTRODUCTION Impaired cerebrospinal fluid (CSF) ‐mediated clearance has been implicated in Alzheimer's disease (AD), but how choroid plexus (ChP) remodeling relates to these processes in vivo remains incompletely understood. METHODS In a large ADNI cohort, we integrated structural magnetic resonance imaging (MRI), amyloid/tau positron emission
Haolin Yin, Yuepeng Deng, ZiHao Lu, Yu Jiang, Chao Zuo, Jianyu Li, Linlin Guo, Binwu Ying, Giuseppe Battaglia, Xiaohe Tian, Qiyong Gong, for the Alzheimer's Disease Neuroimaging Initiative (ADNI)   +11 more
wiley   +1 more source

Sensitivity of the FCC-ee to decay of an axion-like particle into two photons

Journal of High Energy Physics
The decay of the Z boson into axion-like particles (ALP) at the Z-pole run of the proposed CERN FCC-ee collider is investigated. We perform a detailed study of final states with three photons or with a single photon and missing energy, yielding an ...
G. Polesello
doaj   +1 more source

Constraining the axion-photon coupling using radio data of the Bullet cluster. [PDF]

Sci Rep, 2021
Chan MH.
europepmc   +1 more source

Can Functional Traits Explain Recent Changes in Abundance of Alpine Plant Species?

Ecology and Evolution, Volume 16, Issue 6, June 2026.
We tested whether plant functional traits can explain recent changes in alpine species abundance using long‐term monitoring data from Austria. Morphological traits like plant height and leaf area predicted species changes, while physiological stress‐tolerance traits showed no significant relationships.
Feline Peters, Jana Weghorst, Mariana Paetzolt, Andrea Lamprecht, Harald Pauli, Manuela Winkler, Patrick Saccone, Peter Hietz   +7 more
wiley   +1 more source

Solving the strong CP problem with massless grand-color quarks

Journal of High Energy Physics
We propose a solution to the strong CP problem that specifically relies on massless quarks and has no light axion. The QCD color group SU(3) c is embedded into a larger, simple gauge group (grand-color) where one of the massless, colored fermions enjoys ...
Ravneet Bedi, Tony Gherghetta, Keisuke Harigaya   +2 more
doaj   +1 more source

Constraints on axion-like dark matter from a SERF comagnetometer. [PDF]

Nat Commun, 2023
Bloch IM, Shaham R, Hochberg Y, Kuflik E, Volansky T, Katz O.   +5 more
europepmc   +1 more source

Broad axion resonances: Clockwork ALPs at hadron colliders

Physical Review D
Scenarios with multiple pseudoscalars are interesting as they usually tend to provide a framework to naturally realize a light axion with a large decay constant which has rich applications in cosmology, especially in the context of inflation and light dark matter physics.
Srimoy Bhattacharya, Debajyoti Choudhury, Suvam Maharana, Tripurari Srivastava   +3 more
openaire   +1 more source

Axion-like particle (ALP) portal freeze-in dark matter confronting ALP search experiments

Journal of High Energy Physics
Abstract The relic density of Dark Matter (DM) in the freeze-in scenario is highly dependent on the evolution history of the universe and changes significantly in a non-standard (NS) cosmological framework prior to Big Bang Nucleosynthesis (BBN). In this scenario, an additional species dominates the energy budget of the universe at
Dilip Kumar Ghosh, Anish Ghoshal, Sk Jeesun   +2 more
openaire   +3 more sources

Spatial distribution of acoustic traits in bird assemblages along regional bioclimatic gradients

Ecography, Volume 2026, Issue 6, June 2026.
Environmental variation shapes acoustic interactions among birds, creating spatial structures in the sonic signature of local species assemblages. Exploring these patterns at regional scales can reveal processes that segregate acoustic strategies along environmental gradients.
Michela Busana, Frédéric Sèbe, Luc Barbaro, Jonathan Carruthers‐ Jones, Solène Croci, Alice Eldridge, Almo Farina, Amandine Gasc, Charlène Gemard, Sylvain Haupert, Sandra Müller, Jean‐Yves Barnagaud   +11 more
wiley   +1 more source