CERN Accelerating science

TH Preprints

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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.
- 28 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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2021-07-16
03:12
Bremsstrahlung photons from stopping in heavy-ion collisions / Park, Sohyun (CERN) ; Wiedemann, Urs Achim (CERN)
We examine the spectrum of bremsstrahlung photons that results from the stopping of the initial net charge distributions in ultra-relativistic nucleus-nucleus collisions at the LHC. [...]
arXiv:2107.05129 ; CERN-TH-2021-106.
- 7 p.
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2021-07-16
01:47
Hawking radiation by spherically-symmetric static black holes for all spins: II -- Numerical emission rates, analytical limits and new constraints / Arbey, Alexandre (IP2I, Lyon ; CERN ; IUF, Paris) ; Auffinger, Jérémy (IP2I, Lyon) ; Geiller, Marc (ENS, Lyon, Lab. Phys.) ; Livine, Etera R. (ENS, Lyon, Lab. Phys.) ; Sartini, Francesco (ENS, Lyon, Lab. Phys.)
In the companion paper [Phys. [...]
arXiv:2107.03293 ; CERN-TH-2021-105.
- 22 p.

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