SCET Workshop 2022

Session

Other

22 Apr 2022, 09:00

Room 220, Hauptgebäude (University of Bern)

45. High-precision measurement of the W-mass at CDF II (remote)

Chris Hays (University of Oxford (GB))

22/04/2022, 09:00

TBA

44. Heaviside functions and the same-hemisphere triple-gluon contribution to the zero-jettiness soft function at N3LO QCD

Chen-Yu Wang (TTP, KIT)

22/04/2022, 09:30

The advancement of computation techniques enables a number of N3LO calculations in perturbative QCD, which are crucial to reaching percent level accuracy in the LHC (and the upcoming HL-LHC) phenomenology. An important part of this effort involves properly extracting IR singularities at N3LO. The N-jettiness slicing scheme is one of the techniques to deal with this problem, but is only...

25. The photon energy spectrum in B➞Xₛγ at N³LL'

Ivan Novikov (Deutsches Elektronen-Synchrotron (DE))

22/04/2022, 10:00

SCET lies at the foundation of our understanding of inclusive B meson decays. It allows us to factorize the spectrum into hard, jet, and hadronic soft functions. The hadronic soft function can be further factorized into perturbative partonic soft function and nonperturbative shape function. The shape function is a necessary ingredient for extraction of $|V_{ub}|$ CKM matrix element from $B\to...

7. Soft-collinear gravity beyond leading power

Patrick Hager

22/04/2022, 11:00

At first sight, perturbative gravity and gauge theory differ quite drastically at the Lagrangian level.
Whereas the soft limits of both theories share many similarities, their respective collinear limits are distinct. Notably, unlike gauge theory, gravity does not feature any collinear divergences.
This motivates the construction of the soft-collinear effective theory for gravity in analogy...

39. Radiative corrections to charged-current neutrino scattering at GeV energies (remote)

Oleksandr Tomalak

22/04/2022, 11:30

SCET is an extremely powerful tool for the evaluation of radiative corrections in neutrino experiments. I am going to highlight two recent advances: 1. Charged-current quasielastic scattering is the signal process in modern neutrino oscillation experiments. Exploiting effective field theory, we factorize neutrino-nucleon cross sections into soft, collinear, and hard contributions. We evaluate...

38. Simulating collider physics on quantum computers using SCET

Marat Freytsis (Rutgers University)

22/04/2022, 12:00

Quantum simulations of the full dynamics of a quantum field theory over a wide range of energies requires exceptionally large resources. Yet for many observables in particle physics, perturbative techniques are sufficient to accurately model all but a constrained range of energies within the validity of the theory. SCET naturally provides an efficient separation of dynamics well-described by...

42. Weak annihilation in non-leptonic $B$ decays

Philipp Böer (JGU Mainz)

Exclusive non-leptonic $B$-meson decays provide a precision laboratory for tests of flavour-changing weak transitions. While the factorization of the decay amplitude is well understood in the heavy-quark limit since more than two decades, very little is known so far about power-corrections. One particular class of such suppressed effects are the so-called weak-annihilation topologies. With the...