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2025-05-02
04:23
A Universal Equilibration Condition for Heavy Quarks / Rajagopal, Krishna (MIT) ; Scheihing-Hitschfeld, Bruno (Santa Barbara, KITP) ; Wiedemann, Urs Achim (CERN)
Kinetic equilibration at late times is physically required for heavy particles in a finite temperature medium. [...]
CERN-TH-2025-088 ; MIT-CTP/5858 ; arXiv:2504.21139. - 6.
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2025-04-30
05:07
Starlight from JWST: Implications for star formation and dark matter models / Ellis, John ; Fairbairn, Malcolm ; Urrutia, Juan ; Vaskonen, Ville
We confront the star formation rate in different dark matter (DM) models with UV luminosity data from JWST up to z≃25 and legacy data from HST. [...]
KCL-PH-TH/2025-12 ; CERN-TH-2025-085 ; AION-REPORT/2025-03 ; arXiv:2504.20043. - 15.
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2025-04-29
05:22
Renormalizing Two-Fermion Operators in the SMEFT via Supergeometry / Assi, Benoît (Fermilab ; Cincinnati U.) ; Helset, Andreas (CERN) ; Pagès, Julie (UC, San Diego) ; Shen, Chia-Hsien (Taiwan, Natl. Taiwan U. ; NCTS, Taipei)
We extend the geometric framework of field-space covariance for loop computations, thereby unifying the treatment of scalars, fermions, and gauge bosons in effective field theories. [...]
CERN-TH-2025-084 ; FERMILAB-PUB-25-0280-V ; arXiv:2504.18537. - 34.
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2025-04-25
04:05
Long distance contributions to neutral D-meson mixing from lattice QCD / Di Carlo, Matteo (CERN) ; Erben, Felix (CERN) ; Hansen, Maxwell T. (Edinburgh U.)
The study of neutral D-meson mixing provides a unique probe of long-distance effects in the charm sector, where Standard Model contributions are dominated by nonperturbative effects. [...]
CERN-TH-2025-075 ; arXiv:2504.16189. - 45.
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2025-04-19
04:02
Natural complex plane for kaon CKM data: framework, status and future / Dery, Avital (CERN)
Kaon physics can be used to independently determine three out of the four parameters of the CKM matrix, without any B physics input. [...]
CERN-TH-2025-077 ; arXiv:2504.12386. -
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2025-04-19
04:01
Probing CP-Violating Neutral Triple Gauge Couplings at Electron-Positron Colliders / Ellis, John (Shanghai Jiao Tong U. ; King's Coll. London ; CERN) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U. ; Tsinghua U., Beijing ; Peking U., CHEP) ; Xiao, Rui-Qing (Peking U.)
We study the forms of CP-violating (CPV) neutral triple gauge couplings (nTGCs) that can be realized via dimension-8 operators in the Standard Model Effective Field Theory (SMEFT). [...]
KCL-PH-TH/2025-01 ; CERN-TH-2025-002 ; arXiv:2504.13135. - 19 p, 19.
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2025-04-19
04:01
Geometry of soft scalars at one loop / Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Fadakar, Ipak (EPFL, Lausanne, LPTP ; Pisa, Scuola Normale Superiore) ; Helset, Andreas (CERN) ; Nardi, Filippo (EPFL, Lausanne, LPTP)
We extend the soft theorems for scattering amplitudes of scalar effective field theories to one-loop order. [...]
CERN-TH-2025-081 ; arXiv:2504.12371. - 28.
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2025-04-19
04:00
Extended scalar sectors from all angles (in 15 minutes) / Robens, Tania (Boskovic Inst., Zagreb ; CERN)
In this proceedings contribution, I briefly summarize various aspects that are important in the discussions of new physics searches with novel scalar states, at current and future colliders. [...]
RBI-ThPhys-2025-21 ; CERN-TH-2025-083 ; arXiv:2504.13014. - 6.
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2025-04-18
04:08
How Accidental was Inflation? / Antoniadis, Ignatios (Chulalongkorn U. ; Paris, LPTHE) ; Ellis, John (King's Coll. London ; CERN) ; Ke, Wenqi (Minnesota U.) ; Nanopoulos, Dimitri V. (CERN ; Athens Academy ; Texas A-M) ; Olive, Keith A. (Minnesota U.)
Data on the cosmic microwave background (CMB) are discriminating between different models of inflation, disfavoring simple monomial potentials whilst being consistent with models whose predictions resemble those of the Starobinsky R+R2 cosmological model. [...]
UMN-TH-4418/25 ; FTPI-MINN-25/03 ; KCL-PH-TH/2025-09 ; CERN-TH-2025-076 ; arXiv:2504.12283. - 28.
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2025-04-18
04:03
Search for additional scalar bosons within the Inert Doublet Model in a final state with two leptons at the FCC-ee / Bal, Anubha (Imperial Coll., London) ; Curtis, Edward (Imperial Coll., London) ; Magnan, Anne-Marie (Imperial Coll., London) ; Maier, Benedikt (Imperial Coll., London) ; Robens, Tania (Boskovic Inst., Zagreb ; CERN) ; Wardle, Nicholas (Imperial Coll., London)
In this work, we investigate the discovery reach of a new physics model, the Inert Doublet Model, at an e+e− machine with centre-of-mass energies √s of 240 and 365 GeV. [...]
RBI-ThPhys-2025-08 ; CERN-TH-2025-069 ; arXiv:2504.12178. - 18.
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