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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.- 2022-06-29 - 32 p. - Published in : JHEP 2209 (2022) 148 Fulltext: 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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2022-05-19
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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2022-05-07
04:12
On the NLO QCD Corrections to Gluon-Initiated ZH Production / Degrassi, Giuseppe (CERN ; Rome III U. ; INFN, Rome3) ; Gröber, Ramona (Padua U. ; INFN, Padua) ; Vitti, Marco (Rome III U. ; INFN, Rome3) ; Zhao, Xiaoran (Rome III U. ; INFN, Rome3)
We compute the QCD corrections at next-to-leading order for the process $gg \rightarrow ZH$, including both the virtual two-loop terms and real-emission contributions. The two-loop box diagrams in the virtual corrections are approximated analytically over the complete phase space, combining the results of an expansion in the limit of small transverse momentum and an expansion in the regime of high energy. [...]
arXiv:2205.02769; CERN-TH-2022-079.- 2022-08-01 - 19 p. - Published in : JHEP 2208 (2022) 009 Fulltext: 2205.02769 - PDF; document - PDF;

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2022-05-04
07:38
Charge transfer between rotating complex scalar fields / Domcke, Valerie (CERN ; EPFL, Lausanne, LPPC) ; Harigaya, Keisuke (CERN ; Tokyo U., IPMU) ; Mukaida, Kyohei (KEK, Tsukuba ; Sokendai, Tsukuba)
We consider the transfer of a $U$(1) charge density between Bose-Einstein condensates of complex scalar fields coupled to a thermal bath, focusing on the case of a homogeneous Affleck-Dine field transmitting the charge stored in its angular motion to an axion field. We demonstrate that in the absence of additional symmetries this charge transfer, aided by cosmic expansion as well as the thermal effective potential of the Affleck-Dine field, can be very efficient. [...]
arXiv:2205.00942; CERN-TH-2022-075; KEK-TH-2422.- 2022-08-23 - 31 p. - Published in : JHEP 2208 (2022) 234 Fulltext: 2205.00942 - PDF; document - PDF;

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2022-04-28
04:03
Bootstrapping a Stress-Tensor Form Factor through Eight Loops / Dixon, Lance J. (SLAC) ; Gurdogan, Omer (Southampton U.) ; McLeod, Andrew J. (CERN ; UCLA ; Bohr Inst.) ; Wilhelm, Matthias (Bohr Inst.)
We bootstrap the three-point form factor of the chiral stress-tensor multiplet in planar $\mathcal{N}=4$ supersymmetric Yang-Mills theory at six, seven, and eight loops, using boundary data from the form factor operator product expansion. This may represent the highest perturbative order to which multi-variate quantities in a unitary four-dimensional quantum field theory have been computed. [...]
arXiv:2204.11901; SLAC-PUB-17653; CERN-TH-2022-039.- 2022-07-26 - 45 p. - Published in : JHEP 2207 (2022) 153 Fulltext: 2204.11901 - PDF; document - PDF;

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2022-04-23
10:51
Constraints on multifield inflation from the BOSS galaxy survey / Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-field inflationary models. [...]
arXiv:2204.01781; CERN-TH-2022-055.- 2022-08-03 - 20 p. - Published in : Phys. Rev. D 106 (2022) 043506 Fulltext: PDF;

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