140 Works

Chapter 3: Beyond the Standard Model Phenomena

T. Golling Et Al.
This chapter summarises the physics opportunities in the search and study of physics beyond the Standard Model at the 100 TeV pp collider.

CERN Yellow Reports: Monographs, Vol 1 (2018): HIE-ISOLDE : Technical Design Report for the Energy Upgrade

edited by Y. Kadi, M. A. Fraser, A. Papageorgiou-Koufidou CERN-2018-002-M, 978-92-9083-492-2 (paperback), 978-92-9083-493-9 (PDF) The Isotope mass Separator On-Line facility (ISOLDE) at CERN occupies a leading position in the field of radioactive ion beams research, as it can produce the largest range of isotopes worldwide —over 1000 isotopes of more than 70 elements. HIE-ISOLDE (High Energy and Intensity – ISOLDE) is an upgrade that aims to increase the facility’s energy and intensity reach, opening the...

Beyond the Standard Model physics at the HL-LHC and HE-LHC

Editors: X. Cid Vidal, M. D’Onofrio, P. J. Fox, R. Torre & K. A. Ulmer
This is the third out of five chapters of the final report [1] of the Workshop on Physics at HL-LHC, and perspectives on HE-LHC [2]. It is devoted to the study of the potential, in the search for Beyond the Standard Model (BSM) physics, of the High Luminosity (HL) phase of the LHC, defined as $3$ ab$^{-1}$ of data taken at a centre-of-mass energy of 14 TeV, and of a possible future upgrade, the High...

Higgs physics at the HL-LHC and HE-LHC

Editors: M. Cepeda, S. Gori, P Ilten, M. Kado & F. Riva
The discovery of the Higgs boson in 2012, by the ATLAS and CMS experiments, was a success achieved with only a percent of the entire dataset foreseen for the LHC. It opened a landscape of possibilities in the study of Higgs boson properties, Electroweak Symmetry breaking and the Standard Model in general, as well as new avenues in probing new physics beyond the Standard Model. Six years after the discovery, with a conspicuously larger dataset...

Table of contents

No abstract

Vacuum system

E. Al-Dmour
No abstract.

Radio-frequency (RF) system

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

Front end

D. Einfeld
No abstract.

Cost estimation

D. Einfeld
No abstract.

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...

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.

(Triple) Higgs coupling imprints at future lepton colliders

J. Baglio & C. Weiland
No abstract.

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

J.F. Zurita
No abstract.

Editors’ note

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

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....

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).

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 1 (2019): Detector Technologies for CLIC

The Compact Linear Collider (CLIC) is a high-energy high-luminosity linear electron–positron collider under development. It is foreseen to be built and operated in three stages, at centre-of-mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively. It offers a rich physics program including direct searches as well as the probing of new physics through a broad set of precision measurements of Standard Model processes, particularly in the Higgs-boson and top-quark sectors. The precision required...

CERN Yellow Reports: Monographs, Vol 3 (2019): Standard Model Theory for the FCC-ee Tera-Z stage

Report on the Mini Workshop Precision EW and QCD Calculations for the FCC Studies: Methods and Tools, 12–13 January 2018, CERN, Geneva.

CERN Yellow Reports: Monographs, Vol 2 (2019): A Facility for Tumour Therapy and Biomedical Research in South-Eastern Europe

In 2016 the South East European International Institute for Sustainable Technologies (SEEIIST) was proposed by Herwig Schopper and brought to the political level by Sanja Damjanovic, Minister of Science of Montenegro. In this framework two design studies have been completed by two groups of European experts: a "4th Generation Synchrotron Light Source for Science and Technology" (SRL) and a "Facility for Tumour Hadron Therapy and Biomedical Research" (HTR). A preliminary report was presented and discussed...

Glossary and definitions

The Editorial Team
No abstract.

Collimation system

S. Redaelli, R. Bruce, A. Lechner & A. Mereghetti
A variety of processes can cause unavoidable beam losses during normal and abnormal beam operation. Because of the high stored energy of about 700 MJ and the small transverse beam sizes, the HL-LHC beams are highly destructive. Even a local beam loss of a tiny fraction of the full beam in a superconducting magnet could cause a quench, and larger beam losses could cause damage to accelerator components. Therefore, all beam losses must be tightly...

Vacuum system

V. Baglin, P. Chiggiato, C. Garion & G. Riddone
The luminosity upgrade programme (HL-LHC) requires modifications of the present LHC’s vacuum system, in particular in the triplets, crab cavities, matching section and experimental areas. Such modifications must follow guidelines similar to those followed for the present machine. The increased stored current implies a higher thermal power in the beam screen from the image current moving along with the stored particles and stronger synchrotron radiation (SR) and electron cloud (EC) effects, which in turn translate...

Simulating radiation effects and signal response in silicon sensors

M. Benoit, M. Bomben, E. Chabert, T. Lari, J. Llorente Merino, B. Nachman, L. Rossini, P. Sabatini, J. Sonneveld, C. Suarez, M. Swartz, T. Szumlak & A. Wang
Simulating the effects of radiation on signal response in silicon sensors is crucial for accurately predicting detector performance throughout the lifetime of the experiment. This, in turn, improves the reconstruction accuracy of proton–proton collisions and helps maintain the experiment’s physics reach. In what follows, the strategies implemented by the LHC experiments to correctly simulate the evolution of silicon tracking performance with luminosity will be presented. Different implementations of sensor simulations are used by the large...

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