08.12.2016; Vortrag
Seminar: 3-Loop Corrections to Heavy Flavor Production in Deep-Inelastic Scattering
Redner
Johannes Bluemlein (DESY)
Deep-inelastic scattering provides one of the cleanest ways to access the parton distribution functions of nucleons and to measure the strong coupling constant
$\alpha_s(M_Z^2)$. Due to the heavy flavor contributions to the nucleon structure functions, rather competitive measurements of the charm quark mass $m_c$ can be made. The precision of the data request the NNLO QCD corrections. I describe the calculation of these corrections, which are nearly completed. In course of the
calculation various new function spaces to describe the Feynman diagrams were revealed and many computer-algebraic technologies had to be developed and refined to solve the present task. These technologies have a wide range of applications in further calculations for different precision observables at the LHC. I will present first numerical results for some sets of structure functions and recent updates on $\alpha_s(M_Z^2), m_c, m_b$ and $m_t$ in fitting precision deep-inelastic and $pp$-collider data.
Deep-inelastic scattering provides one of the cleanest ways to access the parton distribution functions of nucleons and to measure the strong coupling constant
$\alpha_s(M_Z^2)$. Due to the heavy flavor contributions to the nucleon structure functions, rather competitive measurements of the charm quark mass $m_c$ can be made. The precision of the data request the NNLO QCD corrections. I describe the calculation of these corrections, which are nearly completed. In course of the
calculation various new function spaces to describe the Feynman diagrams were revealed and many computer-algebraic technologies had to be developed and refined to solve the present task. These technologies have a wide range of applications in further calculations for different precision observables at the LHC. I will present first numerical results for some sets of structure functions and recent updates on $\alpha_s(M_Z^2), m_c, m_b$ and $m_t$ in fitting precision deep-inelastic and $pp$-collider data.
Zeit
15:00
-
16:00
Uhr
Ort
Andreas-Schubert-Bau ASB/E19
Adresse
Zellescher Weg 19
D-01069 Dresden
D-01069 Dresden