60 Works

CERN Yellow Reports: Monographs, Vol 1 (2020): SEE-LS: A 4th Generation Synchrotron Light Source forScience and Technology

Editor: Dieter Einfeld In 2016 the South East Europe International Institute for Sustainable Technologies was proposed by Herwig Schopper and brought to the political level by Sanja Damjanović, Minister of Science of Montenegro. In this framework two design studies have been completed by two groups of European experts: a South East Europe ‘4th Generation Synchrotron Light Source for Science and Technology’ (SEE-LS) and a ‘Facility for Tumour Hadron Therapy and Biomedical Research’. This report concerns...

CERN Yellow Reports: Monographs, Vol 3 (2020): Theory for the FCC-ee: Report on the 11th FCC-ee Workshop, Theory and Experiments, 8–11 January 2019, CERN, Geneva

Eds. A. Blondel, J. Gluza, S. Jadach, P. Janot and T. Riemann The Future Circular Collider (FCC) at CERN, a proposed 100 km circular facility with several colliders in succession, culminates in a 100 TeV proton–proton collider. It offers a vast new domain of exploration in particle physics, with orders-of-magnitude advances in terms of precision, sensitivity, and energy. The implementation plan published in 2018 foresees, as a first step, an electroweak factory electron– positron collider....

Analytics from numerics: five-point QCD amplitudes at two loops

S. Abreu, J. Dormans, F. Febres Cordero, H. Ita & B. Page
In this section, we discuss the calculation of a key component in making such predictions— the loop amplitude. Specifically, we discuss the computation of an independent set of analytical two-loop five-gluon helicity amplitudes in the leading-colour approximation. These amplitudes are an ingredient for the phenomenologically relevant description of three-jet production at next- to-next-to-leading order (NNLO) for hadron colliders. Nonetheless, the methods we present are completely general and can also be applied to predictions for electron–positron...

Precision Monte Carlo simulations with WHIZARD

S. Braß, W. Kilian, T. Ohl, J. Reuter, V. Rothe & P. Stienemeier
No abstract.

Theoretical luminosity precision for the FCC-ee: overview of the path to 0.01%

B.F.L. Ward, S. Jadach, W. Płaczek, M. Skrzypek & S.A. Yost
We present an overview of the pathways to the required theoretical precision for the luminosity targeted by the FCC-ee precision studies. We put the discussion in context with a brief review of the situation at the time of the LEP. We then present the current status and an overview of routes to the desired 0.01% targeted by the FCC-ee (as well as by the ILC).

Heritage projects, preservation, and re-usability concerns

S. Banerjee, M. Chrzaszcz, Z. Was & J. Zaremba
The FCC is a long-term project, novel in many respects, and new calculations, including simu- lation programs, will be appearing in the forthcoming years. However, many of the approaches developed for previous experiments, in particular LEP, will be useful, either directly as a tools or as a means to prepare substantial benchmarks. In addition, programs that will be prepared for Belle II, especially in the domain of τ, B, and D resonance physics, will continue...

Editors’ note

A. Blondel, J. Gluza, S. Jadach, P. Janot & T. Riemann
No abstract.

Cost estimation

D. Einfeld
No abstract.

Table of contents

No abstract

Radio-frequency (RF) system

A. Andersson, D. Einfeld, F. Perez & A. Salom
No abstract.

Vacuum system

E. Al-Dmour
No abstract.

Front end

D. Einfeld
No abstract.

Exotic Higgs decays (and long-lived particles) at future colliders

J.F. Zurita
No abstract.

(Triple) Higgs coupling imprints at future lepton colliders

J. Baglio & C. Weiland
No abstract.

CERN Yellow Reports: Monographs, Vol. 6 (2020): Linac4 design report

Editor: Maurizio Vretenar Linear accelerator 4 (Linac4) is designed to accelerate negative hydrogen ions for injection into the Proton Synchrotron Booster (PSB). It will become the source of proton beams for the Large Hadron Collider (LHC) after the long shutdown in 2019–2020. Linac4 will accelerate H– ions, consisting of a hydrogen atom with an additional electron, to 160 MeV energy and then inject them into the PSB, which is part of the LHC injection chain....

Recent developments in Kira

P. Maierhöfer & J. Usovitsch
In this section, we report on the recent progress made in the development of the Feynman integral reduction program Kira. The development is focused on algorithmic improvements that are essential to extend the range of feasible high-precision calculations for present and future colliders like the FCC-ee.

Numerical multiloop calculations: sector decomposition and QMC integration in pySecDec

S. Borowka, G. Heinrich, S. Jahn, S.P. Jones, M. Kerner & J. Schlenk
The FCC-ee will allow the experimental uncertainties on several important observables, such as the electroweak precision observables (EWPOs), to be reduced by up to two orders of magnitude compared with the previous generation LEP and SLC experiments. To be able to best exploit this unprecedented boost in precision, it is also necessary for theoretical predictions to be known with sufficient accuracy. In practice, this means that very high-order perturbative corrections to electroweak precision observables and...

Top pair production and mass determination

A. Maier
The mass of the top quark can be measured in a well-defined scheme and with unrivalled precision at a future electron–positron collider, like the FCC-ee. The most sensitive observable is the total production cross-section for bbbarW+W-X final states near the top pair production threshold. I review the state of the art in theory predictions for this quantity.

CoLoRFulNNLO at work: a determination of αs

A. Kardos, S. Kluth, G. Somogyi, Z. Trócsányi, Z. Tulipánt & A. Verbytskyi
The most precise determination of fundamental parameters of the Standard Model is very important. One such fundamental parameter is the strong coupling of QCD. Its importance can be gauged by taking a look at the various experiments and configurations where it was measured; for an up-to-date summary. The precise measurement of such a parameter is difficult for two reasons. First, high-quality data with small and well-controlled uncertainties are needed. Second, high-precision calculations are needed from...

Introduction and overview

A. Blondel, J. Gluza, S. Jadach, P. Janot & T. Riemann
This report includes a collection of studies devoted to a discussion of (i) the status of theoretical efforts towards the calculation of higher-order Standard Model (SM) corrections needed for the FCC-ee precision measurement programme, (ii) the possibility of making discoveries in physics by means of these precision measurements, and (iii) methods and tools that must be developed to guarantee precision calculations of the observables to be measured. This report originates from presentations at the 11th...

Organization

D. Einfeld
No abstract.

Executive summary

No abstract.

Beam dynamics and layout of the SEE-LS

D. Einfeld & H. Ghasem
No abstract.

Building, infrastructure, and site

D. Einfeld
No abstract.

Lattice considerations

D. Einfeld
No abstract.

Registration Year

  • 2020
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Resource Types

  • Text
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