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2025-04-10
04:56
Logarithmically-accurate and positive-definite NLO shower matching / van Beekveld, Melissa (NIKHEF, Amsterdam) ; Ferrario Ravasio, Silvia (CERN) ; Helliwell, Jack (Monash U.) ; Karlberg, Alexander (CERN) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; Oxford U.) ; Scyboz, Ludovic (Monash U.) ; Soto-Ontoso, Alba (Granada U.) ; Soyez, Gregory (IPhT, Saclay) ; Zanoli, Silvia (Oxford U., Theor. Phys.)
We present methods to achieve NLL+NLO accurate parton showering for processes with two coloured legs: neutral- and charged-current Drell-Yan, and Higgs production in $pp$ collisions, as well as DIS and $e^+e^-$ to jets. [...]
CERN-TH-2025-004 ; OUTP-25-01P ; Nikhef 2025-003 ; arXiv:2504.05377. - 29.
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2025-04-08
04:07
Inclusive semileptonic decays from lattice QCD: analysis of systematic effects / Kellermann, Ryan (KEK, Tsukuba) ; Barone, Alessandro (U. Mainz, PRISMA) ; Elgaziari, Ahmed (Southampton U. ; U. Southampton (main)) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Hu, Zhi (KEK, Tsukuba) ; Jüttner, Andreas (Southampton U. ; U. Southampton (main) ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba)
Lattice QCD calculations of inclusive semileptonic decay rates involve new types of systematic effects, such as truncation errors in the estimation of energy integrals, or finite-volume effects for multi-body final states. [...]
KEK-CP-0407 ; CERN-TH-2025-059 ; arXiv:2504.03358. - 56.
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2025-04-05
04:44
Gravitational Wave with Domain Wall Dominance / Hong, Sungwoo (KAIST, Taejon) ; Lee, Sung Mook (KAIST, Taejon ; CERN) ; Liang, Qiuyue (Tokyo U., IPMU)
Domain walls (DWs) can be produced when a discrete symmetry is spontaneously broken, and long-lived DWs can dominate the energy density of the universe. [...]
CERN-TH-2025-070 ; arXiv:2504.02462. - 15.
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2025-04-02
04:06
Physics case for low-$\sqrt{s}$ QCD studies at FCC-ee / Verbytskyi, Andrii (Garching, Max Planck Inst.) ; d'Enterria, David (CERN) ; Monni, Pier Francesco (CERN) ; Skands, Peter (Monash U.)
Measurements of hadronic final states in $e^{+}e^{-}$ collisions at centre-of-mass (CM) energies below the Z peak can notably extend the FCC-ee physics reach in terms of precision quantum chromodynamics (QCD) studies. [...]
CERN-TH-2025-064 ; arXiv:2503.23855. - 13 p, 13.
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2025-04-02
04:04
NNLOJET: a parton-level event generator for jet cross sections at NNLO QCD accuracy / NNLOJET Collaboration
The antenna subtraction method for NNLO QCD calculations is implemented in the NNLOJET parton-level event generator code to compute jet cross sections and related observables in electron-positron, lepton-hadron and hadron-hadron collisions. [...]
arXiv:2503.22804 ; CERN-TH-2025-012 ; IPPP/25/09 ; ZU-TH 11/25. - 42.
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2025-04-01
04:28
Axial perturbations of black holes with primary scalar hair / Charmousis, Christos (IJCLab, Orsay ; CERN) ; Iteanu, Simon (IJCLab, Orsay) ; Langlois, David (APC, Paris) ; Noui, Karim (IJCLab, Orsay)
We study axial perturbations of static black holes with primary hair in a family of degenerate higher-order scalar-tensor (DHOST) theories. [...]
CERN-TH-2025-058 ; arXiv:2503.22348. - 32.
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2025-04-01
04:24
Precision Tests in $b\to s\ell^+\ell^-$ ($\ell=e,\mu$) at FCC-ee / Bordone, Marzia (Zurich U. ; CERN) ; Cornella, Claudia (CERN) ; Davighi, Joe (CERN)
The rare semi-leptonic decays $B\to K^\ast \ell^+\ell^-$, with $\ell=e, \mu$, are highly sensitive to new physics (NP) due to their suppression in the Standard Model (SM). [...]
CERN-TH-2025-065 ; ZU-TH 22/25 ; arXiv:2503.22635. - 21.
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2025-04-01
04:24
Kaon Physics: A Cornerstone for Future Discoveries / Aebischer, Jason (CERN) ; Akmete, Atakan Tugberk (U. Mainz, PRISMA) ; Aliberti, Riccardo (Mainz U., Inst. Kernphys.) ; Altmannshofer, Wolfgang (UC, Santa Cruz ; UC, Santa Cruz, Inst. Part. Phys.) ; Ambrosino, Fabio (Naples U. ; INFN, Naples ; SSM, Naples) ; Ammendola, Roberto (INFN, Rome2) ; Antonelli, Antonella (Frascati) ; Anzivino, Giuseppina (Perugia U. ; INFN, Perugia) ; Ashanujjaman, Saiyad (KIT, Karlsruhe, TTP ; KIT, Karlsruhe) ; Bandiera, Laura (INFN, Ferrara) et al.
The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovation in high-energy physics (HEP). [...]
CERN-TH-2025-066 ; arXiv:2503.22256. - 22.
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2025-03-29
04:58
On the open TS/ST correspondence / François, Matijn ; Grassi, Alba
The topological string/spectral theory correspondence establishes a precise, non-perturbative duality between topological strings on local Calabi-Yau threefolds and the spectral theory of quantized mirror curves. [...]
CERN-TH-2025-049 ; arXiv:2503.21762. - 58.
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2025-03-27
04:11
Master integrals for semi-inclusive cuts of massless four-loop propagators / Magerya, Vitaly (CERN) ; Fekésházy, Levente (Hamburg U., Inst. Theor. Phys. II ; Eotvos U.)
We present the analytic calculation of all master integrals for 3-, 4-, and 5-particle semi-inclusive cuts of four-loop massless propagators by means of differential equations. [...]
CERN-TH-2025-061 ; DESY-25-048 ; arXiv:2503.19837. - 22.
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