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Letzte Einträge:
2023-05-25
04:07
Dark Sectors with Mass Thresholds Face Cosmological Datasets / Allali, Itamar J. (Tufts U.) ; Rompineve, Fabrizio (CERN ; Barcelona, IFAE ; Barcelona, Autonoma U.) ; Hertzberg, Mark P. (Tufts U.)
Interacting dark sectors may undergo changes in the number of their relativistic species during the early universe, due to a mass threshold $m$ (similar to changes in the Standard Model bath), and in doing so affect the cosmic history. [...]
arXiv:2305.14166 ; CERN-TH-2023-084. - 18 p.
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2023-05-25
04:05
Electroweak Loop Contributions to the Direct Detection of Wino Dark Matter / Ellis, John (King's Coll. London ; CERN) ; Nagata, Natsumi ; Olive, Keith A. (Minnesota U.) ; Zheng, Jiaming
Electroweak loop corrections to the matrix elements for the spin-independent scattering of cold dark matter particles on nuclei are generally small, typically below the uncertainty in the local density of cold dark matter. [...]
arXiv:2305.13837 ; KCL-PH-TH/2023-27 ; CERN-PH-TH-2023-083 ; FTPI-MINN-23/08, UMN-TH-4214/23. - 27 p.
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2023-05-24
04:53
Thick Wall from Thin Walls / Espinosa, J.R. (Madrid, IFT ; CERN)
An Euclidean bounce describing vacuum decay can be considered as an infinite stack of concentric thin shells to which a thin-wall action can be assigned. [...]
arXiv:2305.06774 ; CERN-TH-2023-075. - 9 p.
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2023-05-24
04:51
Exploring the viability of pseudo Nambu-Goldstone boson as ultralight dark matter in a mass range relevant for strong gravity applications / Morais, António P. (CERN ; U. Aveiro (main)) ; Oliveira, Vinícius (Paraiba U.) ; Onofre, António (Minho U.) ; Pasechnik, Roman (Lund U.) ; Santos, Rui (Lisbon, ISEL ; Lisbon U., CFTC)
We study a simple extension of the Standard Model featuring a dark sector with an ultralight pseudo Nambu-Goldstone boson as dark matter candidate. [...]
arXiv:2305.03776 ; CERN-TH-2023-070. - 23 p.
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2023-05-17
05:47
Next-to-leading-logarithmic PanScales showers for Deep Inelastic Scattering and Vector Boson Fusion / van Beekveld, Melissa (Oxford U., Theor. Phys.) ; Ferrario Ravasio, Silvia (CERN)
We introduce the first family of parton showers that achieve next-to-leading logarithmic (NLL) accuracy for processes involving a $t$-channel exchange of a colour-singlet, and embed them in the PanScales framework. [...]
arXiv:2305.08645 ; CERN-TH-2023-079 ; OUTP-23-05P. - 34 p.
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2023-05-17
05:47
Two-Real-Singlet Model Benchmark Planes -- A Moriond Update / Robens, Tania (Boskovic Inst., Zagreb ; CERN)
I present an update on the the Benchmark Planes in the Two-Real-Singlet Model (TRSM), a model that enhances the Standard Model (SM) scalar sector by two real singlets, where an additional Z2 x Z2' symmetry is imposed. [...]
arXiv:2305.08595 ; RBI-ThPhys-2023-12 ; CERN-TH-2023-081. - 4 p.
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2023-05-17
05:47
Short Baseline Oscillations and the Gallium Mystery / Brdar, Vedran (CERN)
Data from several neutrino experiments suggest an anomalous neutrino flavor transition across relatively short baselines which is in conflict with the three-flavor neutrino oscillation paradigm. [...]
arXiv:2305.08627 ; CERN-TH-2023-082. - 7 p.
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2023-05-12
04:36
On Higher-Spin Points and Infinite Distances in Conformal Manifolds / Baume, Florent (Pennsylvania U. ; Hamburg U., Inst. Theor. Phys. II) ; Calderón-Infante, José
Distances in the conformal manifold, the space of CFTs related by marginal deformations, can be measured in terms of the Zamolodchikov metric. [...]
arXiv:2305.05693 ; CERN-TH-2023-067; ZMP-HH/23-6. - 34 p.
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2023-05-05
04:09
Precision CMB constraints on eV-scale bosons coupled to neutrinos / Sandner, Stefan (Valencia U., IFIC) ; Escudero, Miguel (CERN) ; Witte, Samuel J. (Amsterdam U. ; U. Amsterdam, GRAPPA ; ICC, Barcelona U.)
The cosmic microwave background (CMB) has proven to be an invaluable tool for studying the properties and interactions of neutrinos, providing insight not only into the sum of neutrino masses but also the free streaming nature of neutrinos prior to recombination. [...]
arXiv:2305.01692 ; IFIC/23-13 ; FTUV-23-0413.0599 ; CERN-TH-2023-073. - 19 p.
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2023-05-05
04:07
Gravitational waves from a scotogenic two-loop neutrino mass model / Bonilla, Cesar (Catolica del Norte U.) ; Carcamo Hernandez, A.E. (CCTVal, Valparaiso) ; Goncalves, Joao (U. Aveiro (main) ; Lund U.) ; K. N., Vishnudath (CCTVal, Valparaiso) ; Morais, Antonio P. (CERN) ; Pasechnik, Roman (Lund U.)
We propose a framework to account for neutrino masses at the two-loop level. [...]
arXiv:2305.01964 ; CERN-TH-2023-071. - 21 p.
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