65 Works


D. Einfeld
No abstract.

Precision predictions for Higgs decays in the (N)MSSM

F. Domingo, S. Heinemeyer, S. Paßehr & G. Weiglein
No abstract.


No abstract.

Insertion magnets

E. Todesco & P. Ferracin
In general, magnets will be tested individually in a vertical test station, and then horizontally in the final cold mass assembly within the final cryostat, with the exception of Q2 and D2 whose length does not allow vertical testing. Many power tests will be done in laboratories collaborating with CERN (BNL for vertical test of Q1/Q3, FNAL for horizontal test of Q1/Q3, KEK for vertical test of D1, LASA for vertical test of high order...

CERN Yellow Reports: Monographs, Vol. 4 (2020): LHC fixed target experiments: Report from the LHC Fixed Target Working Group of the CERN Physics Beyond Colliders Forum

Corresponding editor: Stefano.Redaelli@cern.ch Several fixed-target experiments at the LHC are being proposed and actively studied. Splitting of beam halo from the core by means of a bent crystal combined with a second bent crystal after the target has been suggested in order to study magnetic and electric dipole moments of short-lived particles. A similar scheme without the second crystal or other schemes with more conventional solid or gas targets have been proposed to study hadronic...

Precision quantum chromodynamics

D. D’Enterria
The unprecedentedly small experimental uncertainties expected in the electron–positron mea- surements at the FCC-ee, key to searches for physics beyond the SM up to Λ ≈ 50 TeV, impose precise calculations for the corresponding theoretical observables. At the level of theoretical pre- cision required to match that of the FCC-ee experimental measurements, the current relevant QCD uncertainties have to be reduced at at least four different levels.

Inclusion of mixed QCD–QED resummation effects at higher orders

G.F.R. Sborlini
In this section, we review some recent results concerning the inclusion of mixed QCD–QED corrections in the computation of physical observables. First, we comment on the extension of the Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) equations to deal with the presence of mixed QCD–QED interactions. We describe the calculation of the full set of higher-order corrections to the splitting kernels, through the Abelianization algorithm. This procedure al- lows us to build the functional form of the QCD–QED corrections, starting...

Scalar one-loop Feynman integrals in arbitrary space–time dimension d – an update

T. Riemann & J. Usovitsch
No abstract.

Unsubtractions at NNLO

J.J. Aguilera-Verdugo, F. Driencourt-Mangin, J. Plenter, S. Ramírez-Uribe, G. Rodrigo, G.F.R. Sborlini, W.J. Torres Bobadilla & S. Tracz
Computations in perturbative quantum field theory (pQFT) feature several aspects that, although intrinsically non-physical, are traditionally successfully eluded by modifying the dimen- sions of space–time. Closed loops in pQFT implicitly extrapolate the validity of the Standard Model (SM) to infinite energies—equivalent to zero distance—much above the Planck scale. We should expect this to be a legitimate procedure if the loop scattering amplitudes that contribute to the physical observables are either suppressed at very high energies,...

Control system

D. Fernandez
No abstract.

Project schedule

D. Einfeld
No abstract.

Training programme

A. Nadji
No abstract.

Appendix A: Synchrotron radiation characteristics

D. Einfeld
No abstract.

Electron–positron annihilation processes in MCSANCee

A. Arbuzov, S. Bondarenko, Y. Dydyshka, L. Kalinovskaya, L. Rumyantsev, R. Sadykov & V. Yermolchyk
No abstract.

Synchrotron radiation

Ch. Quitmann & T. Rayment
No abstract.

Layout of a synchrotron light source

D. Einfeld
No abstract.

Power supplies

J.-F. Bouteille & D. Einfeld
No abstract.


D. Einfeld
No abstract.


No abstract.

Prospects for higher-order corrections to W pair production near threshold in the EFT approach

C. Schwinn
The precise measurement of the mass of the W boson plays an essential role for precision tests of the Standard Model (SM) and indirect searches for new physics through global fits to electroweak observables. Cross-section measurements near the W pair production threshold at a possible future e−e+ collider promise to reduce the experimental uncertainty to the level of 3 MeV at an International Linear Collider (ILC), while a high-luminosity circular collider offers a potential improvement...

Vertex functions in QCD—preparation for beyond two loops

J.A. Gracey
We summarise the algorithm to determine the two-loop off-shell three-point vertex functions of QCD before outlining the steps required to extend the results to three and more loops.

Effective field theory approach to QED corrections in flavour physics

M. Beneke, C. Bobeth & R. Szafron
Thanks to the accurate measurements performed at the low-energy facilities and the LHC, flavour physics of light quarks, especially the bottom quark, emerged on the precision frontier for tests of the Standard Model (SM) and in searches for new physics effects. On the theoretical side, short-distance perturbative higher-order QCD and electroweak corrections are under good control for many processes. Moreover, tremendous progress in lattice computations allows percentage to even subpercentage accuracy to be achieved for...

Higgs boson decays: theoretical status

M. Spira
No abstract.

Numerics for elliptic Feynman integrals

C. Bogner, I. Hönemann, K. Tempest, A. Schweitzer & S. Weinzierl
The Standard Model involves several heavy particles: the Z and W bosons, the Higgs boson, and the top quark. Precision studies of these particles require, on the theoretical side, quantum corrections at the two-loop order and beyond. It is a well-known fact that, starting from two loops, Feynman integrals with massive particles can no longer be expressed in terms of multiple polylogarithms. This immediately raises the following question. What is the larger class of functions...

CERN Yellow Reports: Monographs, Vol. 10 (2020): High-Luminosity Large Hadron Collider (HL-LHC): Technical design report

Editors: I. Béjar Alonso, O. Brüning, P. Fessia, M. Lamont, L. Rossi, L. Tavian, M. Zerlauth The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up a new energy frontier for exploration in 2010, it has gathered a global user community of about 9000 scientists working in fundamental particle physics and the physics of hadronic matter at extreme temperature and density. To sustain and extend its discovery potential,...

Registration Year

  • 2020

Resource Types

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