[Theory-seminars] Seminars next week

[Carlota Andres Casas]

Dear all,

Here is a reminder for next week theory seminars:


Theory seminar:

Monday, February 4th, 1:00PM, Room F336-F327

Ian Cloet (Argonne),"Unraveling Pion and Kaon Structure with the DSEs"
BlueJeans connection: https://bluejeans.com/321085255<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbluejeans.com%2F321085255&data=02%7C01%7C%7C8204db5f8e124a70d23f08d68890a34e%7Cb4d7ee1f4fb34f0690372b5b522042ab%7C1%7C0%7C636846552121245241&sdata=qpR3a6WB38goG5hltp2QyzA5vAq0ACW2llgKk%2FprAmM%3D&reserved=0>

Abstract:
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbluejeans.com%2F321085255&data=02%7C01%7C%7C8204db5f8e124a70d23f08d68890a34e%7Cb4d7ee1f4fb34f0690372b5b522042ab%7C1%7C0%7C636846552121245241&sdata=qpR3a6WB38goG5hltp2QyzA5vAq0ACW2llgKk%2FprAmM%3D&reserved=0>The pion and kaon occupy a special place in QCD as they are bound-states of a dressed-quark and a dressed-antiquark, but would also be massless in the chiral-limit because of dynamical chiral symmetry breaking (DCSB) in QCD. The structure of these Goldstone bosons is therefore intimately tied to key questions in QCD, such as, the origin of hadron masses and color confinement. This talk will present recent results on the partonic structure of the pion and kaon obtained using the Dyson-Schwinger equations. Particular focus will be given to the properties of the pion and kaon as expressed by aspects of their light-front wave functions, and the connection of these properties to DCSB, examples include, parton distribution amplitudes and functions, form factors, TMDs, and GPDs. Opportunities to measure aspects of this partonic structure at facilities such as Jefferson Lab and a future electron-ion collider will also be discussed.


Cake seminar:

Wednesday February 6th, 1:00PM, Room Room F336-F327

Christian Weiss (JLab),"Exploring hadron structure with EFT-based methods"
BlueJeans connection:  https://bluejeans.com/195615763<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbluejeans.com%2F195615763&data=02%7C01%7C%7C8204db5f8e124a70d23f08d68890a34e%7Cb4d7ee1f4fb34f0690372b5b522042ab%7C1%7C0%7C636846552121255246&sdata=1pimojv1CgXq7CATHgL7mvXj%2FfzaPfJKMpZDiyiNcxk%3D&reserved=0>

Abstract:
Hadron structure in QCD is expressed in the hadronic matrix elements of operators such as local currents (charges, form factors) or nonlocal correlators appearing in the factorization of high-momentum transfer processes (partonic structure, PDFs, GPDs). These structures can be calculated/explained/predicted using systematic non perturbative methods of strong-interaction physics such as chiral effective field theory (ChEFT), dispersion theory (analyticity, unitarity, N/D), and the 1/N expansion of QCD. We present an overview of recent results and future directions in this field.  This includes: (a) First-principles calculations of nucleon form factors combining chiral EFT and dispersion theory, with applications to JLab experiments and the proton radius extraction; (b) Partonic structure at peripheral transverse distances b ~ 1/M_pi from ChEFT (transverse densities, GPDs); (c) Energy-momentum tensor and partonic angular momentum in the nucleon. We emphasize the connections and synergies and with other fields (LQCD, amplitude analysis, baryon resonances)

Raza, Vincent, Carlota

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