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2024-06-07
04:42
A new standard for the logarithmic accuracy of parton showers / van Beekveld, Melissa (Nikhef, Amsterdam) ; Dasgupta, Mrinal (Manchester U.) ; El-Menoufi, Basem Kamal (Monash U.) ; Ferrario Ravasio, Silvia (CERN) ; Hamilton, Keith (University Coll. London) ; Helliwell, Jack (Oxford U., Theor. Phys.) ; Karlberg, Alexander (CERN) ; Monni, Pier Francesco (CERN) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; U. Oxford (main)) ; Scyboz, Ludovic (Monash U.) et al.
We report on a major milestone in the construction of logarithmically accurate final-state parton showers, achieving next-to-next-to-leading-logarithmic (NNLL) accuracy for the wide class of observables known as event shapes. [...]
CERN-TH-2024-057 ; OUTP-24-03P ; arXiv:2406.02661. - 19 p.
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2024-06-07
04:40
Electromagnetic (high-frequency) gravitational wave detectors: Interferometers revisited / Domcke, Valerie (CERN) ; Kopp, Joachim (CERN ; Mainz U.)
Increased interest in pushing the frontier of gravitational wave searches to higher frequencies (kHz and beyond) has resulted in a variety of different proposed experimental concepts. [...]
CERN-TH-2024-082 ; arXiv:2406.03244. - 8 p.
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2024-06-06
04:56
Weyl Fermion Creation by Cosmological Gravitational Wave Background at 1-loop / Maleknejad, Azadeh (King's Coll. London) ; Kopp, Joachim (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA)
Weyl fermions of spin $\frac12$ minimally coupled to Einstein's gravity in 4 dimensions cannot be produced purely gravitationally in an expanding Universe at tree level. [...]
arXiv:2406.01534 ; KCL-PH-TH/2024-33 ; CERN-TH-2024-079 ; MITP-24-054. - 36 p.
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2024-06-05
04:17
The flavor invariants of the $\nu$SM / Grojean, Christophe (DESY ; Humboldt U., Berlin ; CERN) ; Kley, Jonathan (DESY ; Humboldt U., Berlin) ; Leflot, Damien (Annecy, LAPTH) ; Yao, Chang-Yuan (DESY ; Nankai U.)
Sixty years after the experimental discovery of CP violation in the quark sector, the existence of a similar CP violation in the lepton sector is still to be established. [...]
CERN-TH-2024-076 ; DESY-24-021 ; HU-EP-24/14 ; arXiv:2406.00094. - 27 p.
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2024-06-05
04:06
Fermion Mass Generation without Symmetry Breaking / Cresswell-Hogg, Charlie (Sussex U.) ; Litim, Daniel F. (Sussex U. ; CERN)
We study the generation of fermion mass in a context where interactions break a discrete chiral symmetry. [...]
arXiv:2406.00100 ; CERN-TH-2024-077. - 19 p.
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2024-06-04
04:49
A log story short: running contributions to radiative Higgs decays in the SMEFT / Grojean, Christophe (DESY ; Humboldt U., Berlin ; CERN) ; Guedes, Guilherme (DESY) ; Roosmale Nepveu, Jasper (DESY ; Humboldt U., Berlin) ; Salla, Gabriel M. (DESY ; Sao Paulo U., Inst. Math. Stat.)
We investigate the renormalization of the radiative decays of the Higgs to two gauge bosons in the Standard Model Effective Field Theory at mass dimension eight. [...]
arXiv:2405.20371 ; CERN-TH-2024-075 ; DESY-24-077 ; HU-EP-24/15-RTG. - 32 p.
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2024-06-01
05:18
Status of QCD precision predictions for Drell-Yan processes / Alekhin, S. (Hamburg U., Inst. Theor. Phys. II) ; Amoroso, S. (DESY) ; Buonocore, L. (CERN) ; Huss, A. (CERN) ; Kallweit, S. (Zurich U.) ; Kardos, A. (U. Debrecen, Inst. Phys. ; MTA-DE, Debrecen ; Eotvos U.) ; Michel, J. (Amsterdam U. ; NIKHEF, Amsterdam) ; Moch, S. (Hamburg U., Inst. Theor. Phys. II) ; Petriello, F. (Northwestern U. ; Argonne) ; Rottoli, L. (Zurich U.) et al.
We compute differential distributions for Drell-Yan processes at the LHC and the Tevatron colliders at next-to-next-to-leading order in perturbative QCD, including fiducial cuts on the decay leptons in the final state. [...]
arXiv:2405.19714 ; DESY 24-073 ; CERN-TH-2024-068 ; ZU-TH 26/24 ; MPP-2024-106. - 31 p.
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2024-06-01
05:11
Taxonomy of Infinite Distance Limits / Etheredge, Muldrow (Massachusetts U., Amherst ; Santa Barbara, KITP) ; Heidenreich, Ben (Massachusetts U., Amherst) ; Rudelius, Tom (Durham U., Dept. of Math.) ; Ruiz, Ignacio (Madrid, IFT) ; Valenzuela, Irene (Madrid, IFT ; CERN)
The Emergent String Conjecture constrains the possible types of light towers in infinite-distance limits in quantum gravity moduli spaces. [...]
arXiv:2405.20332 ; ACFI-T24-04 ; CERN-TH-2024-067 ; IFT-UAM/CSIC-23-64. - 93 p.
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2024-05-31
04:40
QCD predictions for vector boson plus hadron production at the LHC / Caletti, Simone (Zurich, ETH) ; Gehrmann-De Ridder, Aude (Zurich, ETH ; Zurich U.) ; Huss, Alexander (CERN) ; Garcia, Adrian Rodriguez (Zurich, ETH) ; Stagnitto, Giovanni (Milan Bicocca U.)
The identification of a hadron in the final state of hadron-collider events that feature a leptonically decaying vector boson can provide essential information on the parton content of the colliding protons. [...]
ZU-TH 25/24 ; CERN-TH-2024-062 ; arXiv:2405.17540. -
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2024-05-29
05:22
Improving Neutrino Energy Reconstruction with Machine Learning / Kopp, Joachim (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Machado, Pedro (Fermilab) ; MacMahon, Margot (University Coll. London) ; Martinez-Soler, Ivan (Durham U., IPPP)
Faithful energy reconstruction is foundational for precision neutrino experiments like DUNE, but is hindered by uncertainties in our understanding of neutrino--nucleus interactions. [...]
arXiv:2405.15867 ; CERN-TH-2024-066 ; MITP-24-052 ; FERMILAB-PUB-24-0276-T ; IPPP/24/26. - 6 p.
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