2021-02-25
04:20 |
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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2021-01-20
04:01 |
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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 - 24 p.
- Published in : JHEP 2103 (2021) 035
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-12-05
04:54 |
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
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2020-11-28
04:30 |
$ZH$ 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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2020-11-21
04:27 |
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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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
Fulltext: PDF;
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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2020-11-12
04:58 |
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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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