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Chercher dans 140,054 notices:
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2026-04-18
04:39
Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
A search for a resonance heavier than 250 GeV decaying into four leptons via two intermediate bosons is presented. [...]
arXiv:2604.14236 ; CMS-EXO-24-006 ; CERN-EP-2026-072. - 33.
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2026-04-18
04:38
The Spurion Massive EFT (SMEFT) / Northey, Julian L. (Technion) ; Shadmi, Yael (Technion) ; Soreq, Yotam (Technion ; CERN) ; Ueda, Daiki (Technion)
We use the amplitude formulation of the SMEFT to introduce a spurion analysis of the SMEFT low-energy amplitudes in terms of the Higgs VEV. [...]
CERN-TH-2026-054 ; arXiv:2604.14274. - 25.
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2026-04-18
04:37
Probing $τ$ lepton dipole moments at future Lepton Colliders / Buttazzo, Dario (INFN, Pisa) ; Levati, Gabriele (Bern U.) ; Ma, Yang (Louvain U., CP3) ; Maltoni, Fabio (Louvain U., CP3 ; Bologna U. ; INFN, Bologna ; CERN) ; Paradisi, Paride (U. Padua (main) ; INFN, Padua) ; Wang, ZeQiang (Louvain U., CP3)
The electric and magnetic dipole moments of the electron and of the muon provide stringent tests of the Standard Model and sensitive probes of new physics. [...]
IRMP-CP3-26-07 ; CERN-TH-2026-089 ; COMETA-2026-06 ; arXiv:2604.14281. - 8.
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2026-04-18
04:33
Charmonium radiative transitions to dileptons from lattice QCD: The case of $h_c \to \eta_c \ell^+\ell^-$ and $\chi_{c1} \to J/\psi\,\ell^+\ell^-$ / Bečirević, D. (IJCLab, Orsay ; CERN ; U. Paris-Saclay) ; Di Palma, R. (INFN, Rome ; Rome U.) ; Frezzotti, R. (Rome U., Tor Vergata) ; Gagliardi, G. (INFN, Rome3) ; Lubicz, V. (INFN, Rome) ; Sanfilippo, F. (INFN, Rome3) ; Tantalo, N. (Rome U., Tor Vergata)
We present a lattice QCD study of dilepton production in charmonium transitions, specifically focusing on the $1^{+-} \to 0^{-+}$ and $1^{++} \to 1^{--}$ processes: $h_c \to η_c \ell^+ \ell^-$ and $χ_{c1} \to J/ψ\ell^+ \ell^-$, where $\ell = e, μ$. [...]
arXiv:2604.15256. - 29.
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2026-04-18
04:27
Study of the $B^0 \to Λ_c^+ \barΛ_c^- K_S^0$ decay / LHCb Collaboration
The decay $B^0 \to Λ_c^+ \barΛ_c^- K_S^0$ is studied at LHCb for the first time using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of $\sqrt{s} = 13$ TeV, corresponding to an integrated luminosity of 5.4 fb$^{-1}$. [...]
arXiv:2604.15040 ; LHCb-PAPER-2025-072 ; CERN-EP-2026-073. - 22.
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2026-04-18
04:22
Quantum correction to the diffusion term in stochastic inflation from composite-operator matching in Soft de Sitter Effective Theory / Beneke, Martin (Munich, Tech. U.) ; Hager, Patrick (CERN) ; Sanfilippo, Andrea F. (Granada U.)
In the framework of Soft de Sitter Effective Theory (SdSET), the Fokker-Planck equation for the late-time dynamics of the massless minimally coupled scalar field and its extension to the Kramers-Moyal equation are obtained from operator mixing of composite operators of the effective superhorizon field. [...]
TUM-HEP-1599/26 ; CERN-TH-2026-084 ; arXiv:2604.14283. - 65.
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2026-04-17
06:27
$N$-Jettiness Soft Functions Made Simple / Buonocore, Luca (CERN) ; Delto, Maximilian (CERN) ; Melnikov, Kirill (Karlsruhe U., TTP) ; Monni, Pier Francesco (CERN) ; Pikelner, Andrey (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Vita, Gherardo (CERN)
We present a new method to compute the soft function for the $N$-Jettiness variable for arbitrary $N$ at high perturbative orders in QCD. [...]
TTP26-012 ; P3H-26-027 ; CERN-TH-2026-055 ; arXiv:2604.13167. - 35.
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2026-04-17
06:26
Highly boosted dielectron identification in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
A new technique is developed to identify dielectrons (e$^+$e$^-$) with Lorentz boost $γ_\mathrm{L}$$\gt$ 20 that produce one single merged cluster in the electromagnetic calorimeter of the CMS detector. [...]
arXiv:2604.13320 ; CMS-EGM-24-002 ; CERN-EP-2026-092. - 41.
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2026-04-17
06:26
Search for resonances in four top quark events in the 2 lepton final state / Stafford, Dominic W. (DESY)
A first search is presented for BSM resonances in four top quark production in the 2 lepton channel, using $138\mathrm{fb}^{-1}$$pp$ data collected at $\sqrt{s}=13$ TeV, and $35\mathrm{fb}^{-1}$$\sqrt{s}=13.6$ TeV $pp$ data. [...]
arXiv:2604.14058. - 4.
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2026-04-17
06:16
Resonance- and Width-aware Parton Shower Evolution and NLO Matching / Höche, Stefan (Fermilab) ; Reichelt, Daniel (CERN)
We introduce a technique for the next-to-leading order accurate simulation of $e^+e^-\to W^+W^-b\bar{b}$ that respects the resonant nature of the process above and near the top-quark pair production threshold. [...]
arXiv:2604.13978 ; FERMILAB-PUB-26-0230-T ; CERN-TH-2026-085 ; MCNET-26-06. - 12.
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