CERN Accelerating science

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2021-08-05
09:06
Primordial blackholes from Gauss-Bonnet-corrected single field inflation / Kawai, Shinsuke (Sungkyunkwan U.) ; Kim, Jinsu (CERN)
Primordial blackholes formed in the early Universe via gravitational collapse of over-dense regions may contribute a significant amount to the present dark matter relic density. [...]
arXiv:2108.01340 ; CERN-TH-2021-115.
- 9 p.

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2021-08-04
01:23
Analyticity and Unitarity for Cosmological Correlators / Di Pietro, Lorenzo ; Gorbenko, Victor ; Komatsu, Shota
We study the fundamentals of quantum field theory on a rigid de Sitter space. [...]
CERN-TH-2021-118 ; arXiv:2108.01695.
- 2021. - 93.
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2021-07-31
04:03
First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC / Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Hoferichter, Martin (Bern U. ; U. Bern, AEC) ; Kirk, Matthew (Rome U. ; INFN, Rome) ; Manzari, Claudio Andrea (Zurich U. ; PSI, Villigen) ; Schnell, Luc (Paris, LPTHE ; Zurich, ETH ; Ec. Polytech., Palaiseau (main))
New-physics (NP) constraints on first-generation quark-lepton interactions are particularly interesting given the large number of complementary processes and observables that have been measured. [...]
arXiv:2107.13569 ; CERN-TH-2021-112 ; PSI-21-16 ; ZU-TH 32/21.
- 40 p.

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2021-07-29
04:47
On an Exponential Representation of the Gravitational S-Matrix / Damgaard, Poul H. (Bohr Inst. ; CERN) ; Plante, Ludovic (Unlisted, FR) ; Vanhove, Pierre (IPhT, Saclay ; Higher Sch. of Economics, Moscow)
An exponential representation of the S-matrix provides a natural framework for understanding the semi-classical limit of scattering amplitudes. [...]
arXiv:2107.12891 ; IPhT-t21/037 ; CERN-TH-2021-111.
- 26 p.

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2021-07-22
11:38
Di-lepton Rapidity Distribution in Drell-Yan Production to Third Order in QCD / Chen, Xuan (Zurich U. ; KIT, Karlsruhe, TP ; KIT, Karlsruhe, IKP) ; Gehrmann, Thomas (Zurich U.) ; Glover, Nigel (Durham U., IPPP ; Durham U.) ; Huss, Alexander (CERN) ; Yang, Tong-Zhi (Zurich U.) ; Zhu, Hua Xing (Zhejiang U., Inst. Mod. Phys. ; Zhejiang U.)
We compute for the first time the lepton-pair rapidity distribution in the photon-mediated Drell-Yan process to next-to-next-to-next-to-leading order (N$^3$LO) in QCD. [...]
arXiv:2107.09085 ; KA-TP-17-2021 ; ZU-TH 33/21 ; CERN-TH-2021-110 ; IPPP/21/13.
- 7 p.

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2021-07-21
07:40
Bootstrapping Quantum Extremal Surfaces I: The Area Operator / Belin, Alexandre (CERN) ; Colin-Ellerin, Sean (UC, Davis, QMAP)
Quantum extremal surfaces are central to the connection between quantum information theory and quantum gravity and they have played a prominent role in the recent progress on the information paradox. [...]
arXiv:2107.07516 ; CERN-TH-2021-109.
- 41 p.

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2021-07-18
14:48
Challenges and Opportunities of Gravitational Wave Searches at MHz to GHz Frequencies / Aggarwal, N. (Northwestern U.) ; Aguiar, O.D. (Sao Jose, INPE) ; Bauswein, A. (Darmstadt, GSI) ; Cella, G. (INFN, Pisa) ; Clesse, S. (Brussels U.) ; Cruise, A.M. (Birmingham U.) ; Domcke, V. (Geneva U., Dept. Theor. Phys. ; LPHE, Lausanne ; DESY) ; Figueroa, D.G. (Valencia U., IFIC) ; Geraci, A. (Northwestern U.) ; Goryachev, M. (Western Australia U.) et al.
The first direct measurement of gravitational waves by the LIGO and Virgo collaborations has opened up new avenues to explore our Universe. [...]
arXiv:2011.12414 ; CERN-TH-2020-185 ; HIP-2020-28/TH ; DESY 20-195.
- 60 p.

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2021-07-16
08:24
The volume of the black hole interior at late times / Iliesiu, Luca V. (Stanford U., ITP) ; Mezei, Márk (Stony Brook U., New York, SCGP) ; Sárosi, Gábor (CERN)
Understanding the fate of semi-classical black hole solutions at very late times is one of the most important open questions in quantum gravity. [...]
arXiv:2107.06286 ; CERN-TH-2021-102.
- 37 p.
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2021-07-16
08:18
Next-to-leading power two-loop soft functions for the Drell-Yan process at threshold / Broggio, Alessandro (Milan Bicocca U. ; INFN, Milan Bicocca) ; Jaskiewicz, Sebastian (Durham U., IPPP) ; Vernazza, Leonardo (CERN ; Turin U. ; INFN, Turin)
We calculate the generalized soft functions at $\mathcal{O}(\alpha_s^2)$ at next-to-leading power accuracy for the Drell-Yan process at threshold. [...]
arXiv:2107.07353 ; IPPP/21/06 ; CERN-TH-2021-108.
- 33 p.
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2021-07-16
03:22
The role of colour flows in matrix element computations and Monte Carlo simulations / Frixione, Stefano (INFN, Genoa ; CERN) ; Webber, Bryan R. (Cambridge U.)
We discuss how colour flows can be used to simplify the computation of matrix elements, and in the context of parton shower Monte Carlos with accuracy beyond leading-colour. [...]
arXiv:2106.13471 ; CERN-TH-2021-098.
- 75 p.

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