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CERN Accelerating science

TH Articles

Ostatnio dodane:
Semi-automated BSM model building procedures in MARTY-1.1 through a 2HDM example / Uhlrich, G. (IP2I, Lyon) ; Mahmoudi, F. (IP2I, Lyon ; CERN) ; Arbey, A. (IP2I, Lyon ; CERN ; IUF, Paris)
MARTY is a C++ computer algebra system specialized for High Energy Physics that can calculate amplitudes, squared amplitudes and Wilson coefficients in a large variety of beyond the Standard Model scenarios up to the one-loop order. It is fully independent of any other framework and its main development guideline is generality, in order to be adapted easily to any type of model. [...]
arXiv:2102.11551; CERN-TH-2021-025.- 2021-02-23 - 14 p. - Published in : PoS: TOOLS2020 (2020) , pp. 042 Fulltext: PDF;
In : Tools for High Energy Physics and Cosmology, Lyon, France, 2 - 6 Nov 2020, pp.042

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Black hole quasinormal modes and isospectrality in Deser-Woodard nonlocal gravity / Chen, Che-Yu (Taiwan, Inst. Phys.) ; Park, Sohyun (CERN)
We investigate the gravitational perturbations of the Schwarzschild black hole in the nonlocal gravity model recently proposed by Deser and Woodard (DW-II). The analysis is performed in the localized version in which the nonlocal corrections are represented by some auxiliary scalar fields. [...]
arXiv:2101.06600; CERN-TH-2021-011.- 2021-03-19 - 10 p. - Published in : Phys. Rev. D 103 (2021) 064029 Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;

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Dark Matter, Destroyer of Worlds: Neutrino, Thermal, and Existential Signatures from Black Holes in the Sun and Earth / Acevedo, Javier F. (Queen's U., Kingston) ; Bramante, Joseph (Queen's U., Kingston ; Perimeter Inst. Theor. Phys.) ; Goodman, Alan (Queen's U., Kingston) ; Kopp, Joachim (CERN ; Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Opferkuch, Toby (CERN)
Dark matter can be captured by celestial objects and accumulate at their centers, forming a core of dark matter that can collapse to a small black hole, provided that the annihilation rate is small or zero. If the nascent black hole is big enough, it will grow to consume the star or planet. [...]
arXiv:2012.09176; CERN-TH-2020-209; MITP/20-081.- 2021-04-09 - 44 p. - Published in : JCAP 2104 (2021) 026 Fulltext: PDF;

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Searching for Lepton Flavour (Universality) Violation and Collider Signals from a Singly-Charged Scalar Singlet / Crivellin, Andreas (CERN ; Zurich U. ; PSI, Villigen) ; Kirk, Fiona (Zurich U. ; PSI, Villigen) ; Manzari, Claudio Andrea (Zurich U. ; PSI, Villigen) ; Panizzi, Luca (Uppsala U.)
In recent years, evidence for lepton flavour universality violation beyond the Standard Model has been accumulated. In this context, a singly charged $SU(2)_L$ singlet scalar ($\phi^\pm$) is very interesting, as it can only have flavour off-diagonal couplings to neutrinos and charged leptons, therefore necessarily violating lepton flavour (universality). [...]
arXiv:2012.09845; CERN-TH-2020-213; PSI-PR-20-24; UZ-TH 55/20.- 2021-04-14 - 8 p. - Published in : Phys. Rev. D 103 (2021) 073002 Article from SCOAP3: PDF; Fulltext: PDF;

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Deep inelastic scattering on the quark-gluon plasma / Cè, Marco (CERN) ; Harris, Tim (Milan Bicocca U. ; INFN, Milan Bicocca) ; Meyer, Harvey B. (Helmholtz Inst., Mainz ; Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Toniato, Arianna (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA)
We provide an interpretation of the structure functions of a thermal medium such as the quark-gluon plasma in terms of the scattering of an incoming electron on the medium via the exchange of a spacelike photon. We then focus on the deep-inelastic scattering (DIS) regime, and formulate the corresponding moment sum rules obeyed by the structure functions. [...]
arXiv:2012.07522; MITP/20-075; CERN-TH-2020-206.- 2021-03-02 - 24 p. - Published in : JHEP 2103 (2021) 035 Article from SCOAP3: PDF; Fulltext: PDF;

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Lepton-Quark Fusion at Hadron Colliders, precisely / Greljo, Admir (Bern U. ; CERN) ; Selimovic, Nudzeim (Zurich U.)
When a TeV-scale leptoquark has a sizeable Yukawa coupling, its dominant production mechanism at hadron colliders is the partonic-level lepton-quark fusion. Even though the parton distribution functions for leptons inside the proton are minuscule, they get compensated by the resonant enhancement. [...]
arXiv:2012.02092; CERN-TH-2020-204; ZU-TH 49/20.- 2021-03-30 - 26 p. - Published in : JHEP 2103 (2021) 279 Article from SCOAP3: PDF; Fulltext: PDF;

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$ZH$ production in gluon fusion: two-loop amplitudes with full top quark mass dependence / Chen, Long (Munich, Max Planck Inst. ; Aachen, Tech. Hochsch.) ; Heinrich, Gudrun (KIT, Karlsruhe, TP) ; Jones, Stephen P. (CERN ; Durham U., IPPP) ; Kerner, Matthias (Zurich U.) ; Klappert, Jonas (RWTH Aachen U.) ; Schlenk, Johannes (PSI, Villigen)
We present results for the two-loop helicity amplitudes entering the NLO QCD corrections to the production of a Higgs boson in association with a $Z$-boson in gluon fusion. The two-loop integrals, involving massive top quarks, are calculated numerically. [...]
arXiv:2011.12325; ZU-TH 45/20; CERN-TH-2020-199; IPPP/20/57; P3H-20-076, KA-TP-21-2020; P3H-20-076, KA-TP-21-2020; TTK-20-42; PSI-PR-20-21; PSI-PR-20-21 P3H-20-076\\ KA-TP-21-2020\\ TTK-20-42\\ PSI-PR-20-21.- 2021-03-11 - 26 p. - Published in : JHEP 2103 (2021) 125 Article from SCOAP3: PDF; Fulltext: PDF;

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Light quark Yukawas in triboson final states / Falkowski, Adam (IJCLab, Orsay) ; Ganguly, Sanmay (Weizmann Inst.) ; Gras, Phillippe (IRFU, Saclay) ; No, Jose Miguel (Madrid, Autonoma U.) ; Tobioka, Kohsaku (Florida State U. ; KEK, Tsukuba) ; Vignaroli, Natascia (Pisa U. ; INFN, Pisa) ; You, Tevong (CERN ; Cambridge U., DAMTP)
Triple heavy vector boson production, $p p \to VVV$ $(V = W, Z)$, has recently been observed for the first time. We propose that precision measurements of this process provide an excellent probe of the first generation light quark Yukawa couplings. [...]
arXiv:2011.09551; CERN-TH-2020-191; IFT-UAM/CSIC-20-158; FTUAM-20-25; KEK-TH-2276;.- 2021-04-02 - 25 p. - Published in : JHEP 2104 (2021) 023 Article from SCOAP3: PDF; Fulltext: PDF;

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MARTY, a new C++ framework for automated symbolic calculations in Beyond the Standard Model physics / Uhlrich, Gregoire (IP2I, Lyon) ; Mahmoudi, Farvah (IP2I, Lyon ; CERN ; IUF, Paris) ; Arbey, Alexandre (IP2I, Lyon ; CERN ; IUF, Paris)
Theoretical calculations Beyond the Standard Model (BSM) constitute a challenge for high energy physicists, but are necessary when searching for New Physics. The predictions of a BSM scenario need to be compared with experimental data and the Standard Model values in order to identify the model that fits better what we observe in particle colliders. [...]
arXiv:2011.06558; CERN-TH-2020-193.- 2020-11-12 - 6 p.
- Published in : PoS: ICHEP2020 (2020) , pp. 928 Fulltext: PDF;
In : 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.928

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Function Theory for Multiloop Feynman Integrals / Duhr, Claude
Precise predictions for collider observables require the computation of higher orders in perturbation theory. This usually involves the evaluation of complicated multiloop integrals, which typically give rise to complicated special functions. [...]
CERN-TH-2020-192.- Geneva : CERN, 2020 - 26. - Published in : Annual Review of Nuclear and Particle Science 69 (2019) 15-39 Fulltext: PDF;

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