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2025-09-10
04:15
Constraints on Dark Matter Models from Supermassive Black Hole Evolution / Ellis, John ; Fairbairn, Malcolm ; Urrutia, Juan ; Vaskonen, Ville
A semi-analytical model for the evolution of galaxies and supermassive black holes (SMBHs) within the $Λ$CDM paradigm has been shown to yield stellar mass-BH mass relations that reproduce both the JWST and pre-JWST observations. [...]
KCL-PH-TH/2025-37 ; CERN-TH-2025-186 ; AION-REPORT/2025-07 ; arXiv:2509.06955.
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2025-09-10
04:15
Chasing the two-Higgs-doublet model via electroweak corrections at $e^+e^-$ colliders / Bredt, Pia (Siegen U.) ; Banno, Tatsuya (KMI, Nagoya) ; Höfer, Marius (KIT, Karlsruhe, TP) ; Iguro, Syuhei (Nagoya U., IAR ; Nagoya U. ; KMI, Nagoya) ; Kilian, Wolfgang (Siegen U.) ; Ma, Yang (Louvain U., CP3) ; Reuter, Jürgen (DESY) ; Zhang, Hantian (CERN)
We present a comprehensive study of Higgs boson production associated with a neutrino pair at $e^+e^-$ colliders ($e^+ e^- \to h \, ν\barν$) at the next-to-leading-order accuracy in both the Standard Model and the two-Higgs-doublet model. [...]
CERN-TH-2025-181 ; DESY-25-121 ; SI-HEP-2025-19 ; P3H-25-063 ; IRMP-CP3-25-30 ; KA-TP-28-2025 ; arXiv:2509.05421.
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2025-09-09
04:37
Exploring Pintopia: Reflection Branes, Bordisms, and U-Dualities / Chakrabhavi, Vivek (Pennsylvania U.) ; Debray, Arun (U. Kentucky, Lexington) ; Dierigl, Markus (CERN) ; Heckman, Jonathan J. (Pennsylvania U.)
The U-dualities of maximally supersymmetric non-chiral supergravity (SUGRA) theories lead to strong constraints on the non-perturbative structure of quantum gravity. [...]
CERN-TH-2025-180 ; arXiv:2509.03573.
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2025-09-09
04:29
Axion lines from nuclear de-excitations in galactic stellar populations / Ning, Orion (UC, Berkeley ; LBL, Berkeley) ; Ray, Anupam (UC, Berkeley) ; Safdi, Benjamin R. (UC, Berkeley ; LBL, Berkeley ; CERN)
We show that mono-energetic axions are produced in abundance through nuclear de-excitations in nearby galaxies such as M87, which is the central galaxy of the Virgo cluster, and the starburst galaxy M82. [...]
CERN-TH-2025-162 ; N3AS-25-014 ; arXiv:2509.03569.
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2025-09-05
04:02
Flow between extremal one-point energy correlators in QCD / Riembau, Marc (CERN ; EPFL, Lausanne, LPTP) ; Son, Minho (KAIST, Taejon)
The energy density generated by a vector current is characterized by a single parameter $a_{\mathcal{E}}$ bounded by unitarity to $-1/2 \leq a_{\mathcal{E}} \leq 1$, with extremal values saturated by free theories of different matter content. [...]
CERN-TH-2025-175 ; arXiv:2509.02669.
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2025-09-04
04:22
Herwig 7 with the Lund String Model: Tuning and Comparative Hadronization Studies / Divisova, Michaela (Prague, Tech. U.) ; Myska, Miroslav (Prague, Tech. U.) ; Sarmah, Pratixan (Jagiellonian U. (main)) ; Siódmok, Andrzej (Jagiellonian U. (main) ; CERN)
The modelling of the formation of colour-singlet hadrons from coloured partons, known as Hadronization, is crucial for generating realistic events in Monte Carlo Event Generators. [...]
arXiv:2509.02348 ; CERN-TH-2025-179 ; MCNET-25-22.
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2025-09-02
04:33
Cosmic Variance in Anisotropy Searches at Pulsar Timing Arrays / Domcke, Valerie (CERN) ; Franciolini, Gabriele (CERN) ; Pieroni, Mauro (Madrid, Inst. Estructura Materia)
Recent pulsar timing array (PTA) analyses show evidence for a gravitational wave background (GWB) with angular correlations consistent with the Hellings-Downs curve. [...]
arXiv:2508.21131 ; CERN-TH-2025-159.
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2025-08-29
04:34
Heavy Quark Pair Energy Correlators: From Profiling Partonic Splittings to Probing Heavy-Flavor Fragmentation / Barata, João (CERN) ; Brewer, Jasmine (Oxford U., Theor. Phys.) ; Lee, Kyle (MIT, Cambridge, CTP) ; Silva, João M. (Granada U. ; LIP, Lisbon ; Lisbon, IST)
We introduce heavy-flavor energy correlators, $\langle Ψ|\mathcal{E}_{\mathcal{H}}(\vec{n}_1) \mathcal{E}_{\mathcal{H}}(\vec{n}_2)|Ψ\rangle$, as a powerful observable for profiling partonic splittings and characterizing heavy-flavor fragmentation. [...]
CERN-TH-2025-172 ; MIT-CTP 5888 ; arXiv:2508.19404.
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2025-08-29
04:32
Implications for Pulsar Timing Arrays of Sub-solar Black Hole Detections: From LVK to Einstein Telescope and Cosmic Explorer / Gouttenoire, Yann (U. Mainz, PRISMA ; Mainz U., Inst. Phys.) ; Trifinopoulos, Sokratis (MIT, Cambridge, CTP ; CERN ; Zurich U.) ; Vanvlasselaer, Miguel (Brussels U., IIHE)
The detection of compact binary mergers with sub-solar masses at gravitational-wave observatories could mark the groundbreaking discovery of primordial black holes (PBHs). [...]
arXiv:2508.19328 ; CERN-TH-2025-169 ; MIT-CTP/5904 ; MITP-25-056.
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2025-08-28
04:26
QGP@50: More than Four Decades of Jet Quenching / Wang, Xin-Nian (CCNU, Wuhan, Inst. Part. Phys. ; Frankfurt U.) ; Wiedemann, Urs Achim (CERN)
How are high-momentum transfer processes modified when embedded in the Quark-Gluon Plasma (QGP) instead of the vacuum? How can fundamental properties of the QGP be inferred from their medium-modifications? And what can be learnt about QCD? These questions have motivated theoretical and experimental studies for more than four decades almost since the beginning of QGP research. [...]
CERN-TH-2025-173 ; arXiv:2508.18794.
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