[Theory-seminars] Seminar tomorrow

[Raza Sufian]

Dear All, 

Here is a reminder for the theory seminar tomorrow:
> 
> Theory seminar: Monday, April 29, 1:00PM, Room L102
> 
> Bluejeans connection:  https://bluejeans.com/610445877 <https://gcc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbluejeans.com%2F610445877&data=02%7C01%7Csufian%40jlab.org%7C809dbfea70f54c1bf67e08d6ca679adf%7Cb4d7ee1f4fb34f0690372b5b522042ab%7C1%7C0%7C636918943659507124&sdata=q4Wa%2FQdSXCCHmi66791cH2NyDI8QfH%2BJb0ezOPE3qYQ%3D&reserved=0>
> 
> Aaron Meyer (BNL), “Pion Scattering to g-2 and Neutrino Physics in Lattice QCD”
> 
> Abstract:
> Long-baseline neutrino oscillation experiments of the upcoming decade require precision measurements of many interaction topologies over a wide range of energies.  Among these interactions are multiparticle final states obtained from resonance intermediate states.  These weak matrix elements are difficult to extract experimentally, since they are either probed by processes with small cross sections or are subject to model assumptions.  As an alternative, lattice QCD may be used to extract the relevant matrix elements from first-principles calculations, sidestepping both of these potential issues.
> 
> In this talk, I will discuss the difficulties that face neutrino oscillation physics over the timescale of the DUNE experiment and the necessity for clean descriptions of nucleon transitions to multiparticle states.  I will also show preliminary results from the RBC+UKQCD collaboration to compute pion scattering using lattice QCD at physical pion mass.  These calculations are used to compute the hadronic vacuum polarization contribution to the muon anomalous magnetic moment and pion scattering phase shifts.  Pion scattering is an ideal simplified environment to study the effects of multiparticle scattering in a finite, periodic volume.  These types of studies will be necessary to compute the transition matrix elements needed by neutrino oscillation physics.
> 
> 
> Thank you.
> Carlota, Miguel and Raza

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