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TH Preprints

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2026-07-04
04:41
Soft-Dimuon Signature from Two-Component Scalar Dark Matter at the LHC / Belyaev, Alexander (Southampton U. ; Rutherford) ; Chakraborti, Manimala (Southampton U.) ; Chen, Shu (Southampton U.) ; Dey, Atri (Uppsala U.) ; Keus, Venus (CERN ; Dublin Inst. ; Helsinki Inst. of Phys.) ; Mahbubani, Rakhi (Boskovic Inst., Zagreb) ; Moretti, Stefano (Southampton U. ; Rutherford ; Uppsala U.)
We explore the potential of the Large Hadron Collider to probe a two-component scalar dark matter scenario in the opposite-sign dimuon plus missing transverse energy final state, accompanied by a hard jet. [...]
DIAS-STP-26-14 ; CERN-TH-2026-145 ; RBI-ThPhys-2026-21 ; arXiv:2607.00243. - 21.
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2026-07-04
04:39
Chebyshev Approximations of Feynman Integrals for Collider Physics / Abreu, Samuel (CERN ; U. Edinburgh (main)) ; Guerreiro, Afonso (Lisbon, IST ; LIP, Lisbon) ; Page, Ben (Gent U.)
We present a novel approach for solving canonical differential equations for Feynman integrals based on an approximation of the integrals with Chebyshev polynomials. [...]
CERN-TH-2026-160 ; arXiv:2607.02411. - 32.
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2026-07-03
04:30
Particle Cosmology / Keus, Venus (Dublin Inst. ; CERN ; Helsinki U.)
Particle cosmology is the branch of science that seeks to understand the birth and evolution of the Universe by applying the principles of particle physics. [...]
arXiv:2606.31812 ; CERN-TH-2026-158 ; DIAS-STP-26-13. - 13.
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2026-07-02
04:19
Rich Phenomenology from Simple Ingredients: A Review of Confining Dark Sectors / Asadi, Pouya (UC, Santa Cruz, Inst. Part. Phys.) ; Batz, Austin (Oregon U. ; LBL, Berkeley) ; Kribs, Graham D. (Oregon U. ; CERN)
We review theories with confining dark sectors and their implications for dark matter, cosmology, phenomenology, and unsolved Standard Model puzzles. [...]
CERN-TH-2026-156 ; arXiv:2606.30760. - 49.
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2026-07-02
04:18
Boosted Higgs-strahlung off a $W$ boson at next-to-next-to-next-to-leading order in QCD / Gehrmann-De Ridder, Aude (ETH, Zurich (main) ; Zurich U.) ; Huss, Alexander (CERN) ; Marcoli, Matteo (Durham U. (main)) ; Monni, Pier Francesco (CERN) ; Re, Emanuele (Milan Bicocca U. ; INFN, Milan Bicocca) ; Rottoli, Luca (Milan Bicocca U. ; INFN, Milan Bicocca) ; Silvetti, Federico (Durham U. (main)) ; Torrielli, Paolo (INFN, Turin ; U. Turin (main))
The production of a boosted Higgs boson in association with a charged weak ($W$) boson is a key process to scrutinize the electroweak symmetry breaking mechanism at hadron colliders. [...]
CERN-TH-2026-114 ; IPPP/26/44 ; LAPTH-034/26 ; ZU-TH 21/26 ; arXiv:2606.31286. - 8.
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2026-07-02
04:17
$Λ\bar Λ$ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization / Barata, João (CERN) ; Cuntín, Iván (CERN ; U. Santiago de Compostela (main)) ; Rico, Enrique (CERN ; Basque U., Bilbao ; Donostia Intl. Phys. Ctr., San Sebastian ; IKERBASQUE, Bilbao) ; Wu, Bin (U. Santiago de Compostela (main))
We construct a quantum information-centered approach to describe the experimentally observed behavior of hyperon spin-pair correlations in high-energy collider experiments. [...]
CERN-TH-2026-155 ; arXiv:2606.30737. - 16.
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2026-07-02
04:17
Reheating in No-Scale Models of Inflation / Antoniadis, Ignatios (Princeton, Inst. Advanced Study ; Paris, LPTHE ; Paris U., VI-VII) ; Ellis, John (King's Coll. London ; CERN) ; Nanopoulos, Dimitri V. (Athens Academy ; Texas A-M) ; Olive, Keith A. (Minnesota U., Theor. Phys. Inst.) ; Verner, Sarunas (U. Chicago (main))
Analogously to the suppression of inflaton decays into conformally-coupled scalar fields in the original Starobinsky $R + R^2$ model of inflation, inflaton decays to Standard Model fields are also suppressed in minimal no-scale models of inflation with field space curvature $\mathcal{R} = 2/3$. [...]
UMN-TH-4533/26 ; FTPI-MINN-26/13 ; KCL-PH-TH/2026-19 ; CERN-TH-2026-154 ; arXiv:2606.31975. - 34.
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2026-07-01
06:58
Analytic two-loop electroweak corrections at high energies / Zhang, Hantian (CERN)
The high-energy behaviour of electroweak scattering amplitudes is of theoretical and phenomenological interest. [...]
arXiv:2606.28880 ; CERN-TH-2026-152. - 8 p, 8.
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2026-06-30
04:00
The QCD energy-momentum tensor on the lattice: non-perturbative renormalization with $N_f=3$ / Bresciani, Matteo (Trinity Coll., Dublin) ; Brida, Mattia Dalla (Milan Bicocca U. ; INFN, Milan Bicocca) ; Giusti, Leonardo (Milan Bicocca U. ; INFN, Milan Bicocca ; CERN) ; Hirasawa, Mitsuaki (Milan Bicocca U. ; INFN, Milan Bicocca) ; Pepe, Michele (INFN, Milan Bicocca) ; Virzì, Luca (Milan Bicocca U. ; INFN, Milan Bicocca)
We construct the traceless components of the energy-momentum tensor on the lattice for QCD with $N_f=3$ flavours, such that their correlation functions satisfy the appropriate Ward identities in the continuum limit. [...]
CERN-TH-2026-139 ; arXiv:2606.28035. - 37.
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2026-06-30
04:00
Spectral densities from Euclidean correlators via integral transforms: theoretical framework / Giusti, Leonardo (INFN, Milan Bicocca ; Milan Bicocca U. ; CERN) ; Saccardi, Matteo (INFN, Milan Bicocca ; Colorado State U.) ; Toniolo, Diego (INFN, Milan Bicocca ; Milan Bicocca U.)
Spectral densities link experimental measurements to dynamical properties of a quantum field theory which, in turn, can be resolved non-perturbatively from the Euclidean time-dependence of correlation functions. [...]
CERN-TH-2026-150 ; arXiv:2606.28167. - 41.
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