Loopfest XXII

Session

Session 4

21 May 2024, 14:30

Fondren Science Building 123 (Dallas Texas USA)

Conveners

Session 4

• Manfred Kraus (UNAM)
• Ayres Freitas

13. Cusp anomalous dimension with massive lines through four loops in QCD

Nikolaos Kidonakis

21/05/2024, 14:30

I present results for the cusp anomalous dimension in QCD at higher orders. I discuss a general method for determining the massive cusp anomalous dimension to a very high degree of accuracy using its asymptotic behavior at small and large quark velocities, and I present explicit calculations through four loops. Separate results for different values of the number of flavors and for distinct...

41. Pushing the NNLO+PS frontier towards new classes of processes with MiNNLO

Marius Wiesemann (Max Planck Institute for Physics), Marius Wiesemann (Max Planck Institute for Physics Munich)

21/05/2024, 15:05

The MiNNLO framework offers an efficient approach to consistently include NNLO QCD corrections within Monte-Carlo event generators. As the first (and only) NNLO+PS method that was extended beyond colour-singlet production, recent developments of the MiNNLO method will be discussed that tackle new classes of hadron-collider reactions, including heavy quarks, jets, and colour singlets in the...

9. A general mass variable flavor number scheme for Z boson associated with a heavy quark production at hadron colliders

Keping Xie (Michigan State University)

21/05/2024, 15:40

The general mass variable flavor number (GMVFN) scheme S-ACOT-MPS will
be discussed for proton-proton collisions. The impact of heavy-flavor
contributions within this factorization scheme will be shown for the production
of a $Z$ boson in association with a charm/bottom quark in pQCD.
An amended version of the QCD factorization formula for proton-proton collisions will
be discussed as...

29. Global fits of the Standard Model and beyond

Laura Reina (Florida State University (US))

21/05/2024, 16:45

We present results from a global fit of dimension-six SMEFT operators that includes electroweak, Higgs-boson, top-quark, and flavor observables. The leading-order scale dependence of the SMEFT Wilson
coefficients is consistently included in the evolution from the UV
scale to the electroweak scale and the low-energy scale of flavor
observables. The global fit is obtained within the HEPfit...

38. SMEFT probes using LHC Drell-Yan data

Radja Boughezal

21/05/2024, 17:20

This talk will consider the potential of LHC Drell-Yan measurements to probe several aspects of the SMEFT. We consider the full spectrum of data, including the invariant mass, forward-backward asymmetry,transverse momentum and lepton angular distributions. We demonstrate the importance of higher-order dimension-8 terms in the SMEFT expansion. We also discuss operators that lead to...

40. Electroweak physics at very high energies: splitting and showering

Tao Han

21/05/2024, 17:55

The Standard Model electroweak sector exhibits some novel features at very high energies. For E >> v (the Higgs vev), the EW gauge symmetry is essentially restored and the massless splitting phenomena dominate the EW physics. Beyond the familiar gauge theory splitting functions, we discuss the emergence of additional ``ultra-collinear'' splitting phenomena and the violation of the...

32. 3-loop heavy-flavor contributions to deep inelastic scattering

Prof. Johannes Bluemlein

21/05/2024, 18:30