2021-02-25
04:20 |
Semi-automated BSM model building procedures in MARTY-1.1 through a 2HDM example
/ Uhlrich, G. ; Mahmoudi, F. ; Arbey, A.
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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2020-12-16
04:36 |
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 - 22 p.
- Published in : JHEP 2103 (2021) 035
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-11-21
04:27 |
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
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In : 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.928
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2020-11-13
17:36 |
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2020-11-11
05:03 |
Low-Energy Probes of No-Scale SU(5) Super-GUTs
/ Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Evans, Jason L. (Shanghai Jiao Tong U.) ; Nagata, Natsumi (Tokyo U.) ; Olive, Keith A. (Minnesota U., Theor. Phys. Inst.) ; Velasco-Sevilla, L. (Bergen U. ; Korea Inst. Advanced Study, Seoul)
We explore the possible values of the $\mu \to e \gamma$ branching ratio, $\text{BR}(\mu\rightarrow e\gamma)$, and the electron dipole moment (eEDM), $d_e$, in no-scale SU(5) super-GUT models with the boundary conditions that soft supersymmetry-breaking matter scalar masses vanish at some high input scale, $M_{\rm in}$, above the GUT scale, $M_{\rm GUT}$. We take into account the constraints from the cosmological cold dark matter density, $\Omega_{CDM} h^2$, the Higgs mass, $M_h$, and the experimental lower limit on the lifetime for $p \to K^+ \bar \nu$, the dominant proton decay mode in these super-GUT models. [...]
arXiv:2011.03554; KCL-PH-TH/2020-61; CERN-TH-2020-172; UMN-TH-4002/20; FTPI-MINN-20/33.-
2021-02-04 - 45 p.
- Published in : Eur. Phys. J. C 81 (2021) 120
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-11-03
04:14 |
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2020-10-29
05:41 |
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2020-10-29
05:41 |
Analytic integration of soft and collinear radiation in factorised QCD cross sections at NNLO
/ Magnea, Lorenzo (CERN ; Turin U. ; INFN, Turin) ; Pelliccioli, Giovanni (Wurzburg U.) ; Signorile-Signorile, Chiara (Turin U. ; INFN, Turin ; KIT, Karlsruhe, Dept. Phys.) ; Torrielli, Paolo (Turin U. ; INFN, Turin) ; Uccirati, Sandro (Turin U. ; INFN, Turin)
Within the framework of local analytic sector subtraction, we present the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. We show that a careful choice of phase-space mappings leads to simple analytic results, including non-singular terms, that can be obtained with conventional integration techniques..
arXiv:2010.14493; P3H-20-061; TTP20-036; CERN-TH-2020-178.-
2021-02-03 - 42 p.
- Published in : JHEP 2102 (2021) 037
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-10-22
04:02 |
Model-independent energy budget for LISA
/ Giese, Felix (DESY) ; Konstandin, Thomas (DESY) ; Schmitz, Kai (CERN) ; Van De Vis, Jorinde (DESY)
We provide an easy method to obtain the kinetic energy fraction in gravitational waves, generated during a cosmological first-order phase transition, as a function of only the wall velocity and quantities that can be determined from the particle physics model at the nucleation temperature. This generalizes recent work that achieved this goal for detonations. [...]
arXiv:2010.09744; DESY-20-173; DESY 20-173; CERN-TH-2020-170.-
2021-01-29 - 31 p.
- Published in : JCAP 2101 (2021) 072
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2020-10-21
04:31 |
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