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2026-04-20
12:28
Interaction of the CERN Large Hadron Collider (LHC) beam with the beam dump block : Memorandum / Assmann, R (CERN) ; Ferrari, A (CERN) ; Goddard, B (CERN) ; Schmidt, R (CERN) ; Tahir, N A (GSI)
The LHC will start to operate at CERN during 2008. [...]
CERN/DG-2008-196-O. - 2008 - 4.
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2026-04-20
12:19
Implications of LHC heavy ion data for multi-strange baryon production
Prior to the start of LHC operations, the good agreement of measurements of particle production at RHIC and other accelerators with simple thermodynamic models allowed one to constrain severely any production of hypothetical strangelets in heavy ion collisions at the LHC. [...]
2011 - 2.
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2026-04-20
11:02
Study of the $B^0\to \Lambda_c^+ \bar\Lambda_c^- K^0_S$ decay
The decay $B^0 \to \Lambda_c^+ \bar{\Lambda}_c^- K_S^0$ 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$^{-1}$. [...]
CERN-EP-2026-073 ; arXiv:2604.15040 ; LHCB-PAPER-2025-072. - 2026
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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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