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2022-09-15
04:22
Current and Future γ-Ray Searches for Dark Matter Annihilation Beyond the Unitarity Limit / Tak, Donggeun (DESY, Zeuthen) ; Baumgart, Matthew (Arizona State U.) ; Rodd, Nicholas L. (CERN) ; Pueschel, Elisa (DESY, Zeuthen)
For decades, searches for electroweak-scale dark matter (DM) have been performed without a definitive detection. This lack of success may hint that DM searches have focused on the wrong mass range. [...]
arXiv:2208.11740; CERN-TH-2022-139; DESY-22-138.- 2022-10-12 - 10 p. - Published in : Astrophys. J. Lett. 938 (2022) L4 Fulltext: document - PDF; 2208.11740 - PDF;

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2022-07-29
04:07
A parton branching with transverse momentum dependent splitting functions / Hautmann, F. (Antwerp U. ; CERN ; Oxford U.) ; Hentschinski, M. (Americas U., Puebla) ; Keersmaekers, L. (Antwerp U.) ; Kusina, A. (Cracow, INP) ; Kutak, K. (Cracow, INP) ; Lelek, A. (Antwerp U.)
Off-shell, transverse-momentum dependent splitting functions can be defined from the high-energy limit of partonic decay amplitudes. Based on these splitting functions, we construct Sudakov form factors and formulate a new parton branching algorithm. [...]
arXiv:2205.15873; CERN-TH-2022-087; IFJPAN-IV-2022-8.- 2022-05-31 - 8 p. Fulltext: PDF;

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2022-07-19
04:48
Zero-jettiness beam functions at N$^3$LO / Behring, Arnd (KIT, Karlsruhe, TTP)
The zero-jettiness beam functions describe collinear emissions from initial state legs and appear in the factorisation theorem for cross sections in the limit of small zero-jettiness. They are an important building block for slicing schemes for colour-singlet production at hadron colliders. [...]
arXiv:2207.07630; CERN-TH-2022-120; TTP22-047; P3H-22-075.- 2022-10-20 - 12 p. - Published in : PoS LL2022 (2022) 027 Fulltext: 2207.07630 - PDF; document - PDF;
In : 16th DESY Workshop on Elementary Particle Physics: Loops and Legs in Quantum Field Theory 2022, Ettal, Germany, 25 - 30 Apr 2022, pp.027

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2022-07-13
04:01
Flavour Physics Phenomenology with SuperIso / Neshatpour, Siavash (INFN, Naples) ; Mahmoudi, Farvah (IP2I, Lyon ; CERN)
We present an overview of SuperIso v4.1 which is a public program for the calculation of flavour physics observables. We give examples of using SuperIso to constrain new physics scenarios with kaon physics and present the implications of rare B-decays..
arXiv:2207.04956; CERN-TH-2022-119.- 2022-07-14 - 9 p. - Published in : PoS CompTools2021 (2022) 010 Fulltext: 2207.04956 - PDF; document - PDF;
In : Computational Tools for High Energy Physics and Cosmology, Lyon, France, 22 - 26 Nov 2021, pp.010

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2022-07-01
06:29
Anatomy of kaon decays and prospects for lepton flavour universality violation / D'Ambrosio, G. (INFN, Naples) ; Iyer, A.M. (Indian Inst. Tech., New Delhi) ; Mahmoudi, F. (IP2I, Lyon ; CERN) ; Neshatpour, S. (INFN, Naples)
The kaon sector is characterised by several processes which are under active investigation across different experiments. In this work, we present the global picture that emerges from a study of the different decay modes. [...]
arXiv:2206.14748; CERN-TH-2022-101.- 2022-09-19 - 31 p. - Published in : JHEP 2209 (2022) 148 Fulltext: document - PDF; 2206.14748 - PDF;

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2022-06-09
04:08
Cosmology with the Redshift-Space Galaxy Bispectrum Monopole at One-Loop Order / Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study) ; Nishimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU)
We study the cosmological information content of the redshift-space galaxy bispectrum monopole at one-loop order in perturbation theory. We incorporate all effects necessary for comparison to data: fourth-order galaxy bias, infrared resummation (accounting for the non-linear evolution of baryon acoustic oscillations), ultraviolet counterterms, non-linear redshift-space distortions, stochastic contributions, projection, and binning effects. [...]
arXiv:2206.02800; CERN-TH-2022-092; YITP-22-60.- 2022-08-15 - 32 p. - Published in : Phys. Rev. D 106 (2022) 043530 Fulltext: PhysRevD.106.043530 - PDF; 2206.02800 - PDF;

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2022-06-04
04:07
Axiogenesis with a Heavy QCD Axion / Co, Raymond T. (Minnesota U., Theor. Phys. Inst. ; Minnesota U.) ; Gherghetta, Tony (Minnesota U.) ; Harigaya, Keisuke (CERN)
We demonstrate that the observed cosmological excess of matter over antimatter may originate from a heavy QCD axion that solves the strong CP problem but has a mass much larger than that given by the Standard Model QCD strong dynamics. We investigate a rotation of the heavy QCD axion in field space, which is transferred into a baryon asymmetry through weak and strong sphaleron processes. [...]
arXiv:2206.00678; UMN-TH-4124/22; FTPI-MINN-22/15; CERN-TH-2022-090.- 2022-10-19 - 32 p. - Published in : JHEP 2210 (2022) 121 Fulltext: document - PDF; 2206.00678 - PDF;

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2022-05-19
09:38
Single Photon Production at Hadron Colliders at NNLO QCD with Realistic Photon Isolation / Chen, X. (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Gehrmann, T. (Zurich U.) ; Glover, E.W.N. (Durham U., IPPP) ; Höfer, M. (Munich U., ASC) ; Huss, A. (CERN) ; Schürmann, R. (Zurich U.)
Isolated photons at hadron colliders are defined by permitting only a limited amount of hadronic energy inside a fixed-size cone around the candidate photon direction. This isolation criterion admits contributions from collinear photon radiation off QCD partons and from parton-to-photon fragmentation processes. [...]
arXiv:2205.01516; ZU-TH 16/22; KA-TP-12-2022; P3H-22-044; IPPP/22/30; IPPP/22/30, CERN-TH-2022-072; LMU-ASC 17/22; CERN-TH-2022-072.- 2022-08-05 - 43 p. - Published in : JHEP 08 (2022) 094 Fulltext: 2205.01516 - PDF; document - PDF;

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2022-05-12
04:52
dE/dx from boosted long-lived particles / Giudice, Gian F. (CERN) ; McCullough, Matthew (CERN) ; Teresi, Daniele (CERN)
At colliders massive long-lived charged particles could be revealed through their anomalously large ionisation energy loss $dE/dx$. In this paper we explore a class of scenarios in which the LLPs are particularly boosted, owing to production from the decay of a heavy parent resonance. [...]
arXiv:2205.04473; CERN-TH-2022-078.- 2022-08-01 - 17 p. - Published in : JHEP 2208 (2022) 012 Fulltext: document - PDF; 2205.04473 - PDF;

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2022-05-10
04:20
Higher-curvature Gravities from Braneworlds and the Holographic c-theorem / Bueno, Pablo (CERN) ; Emparan, Roberto (ICREA, Barcelona ; Barcelona, Autonoma U. ; ICC, Barcelona U.) ; Llorens, Quim (ICC, Barcelona U.)
We study the structure of the higher-curvature gravitational densities that are induced from holographic renormalization in AdS$_{d+1}$. In a braneworld construction, such densities define a d-dimensional higher-curvature gravitational theory on the brane, which in turn is dual to a (d-1)-dimensional CFT living at its boundary. [...]
arXiv:2204.13421; CERN-TH-2022-076.- 2022-08-03 - 17 p. - Published in : Phys. Rev. D 106 (2022) 044012 Fulltext: PhysRevD.106.044012 - PDF; 2204.13421 - PDF;

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