[Jlab-seminars] Physics Seminar: Carlos Ayerbe Gayoso; Clouds Over the Nucleon, a Glimpse Into the Mesonic Content of the Nucleon Through Tagged Deep Inelastic Scattering

[Stephanie Tysor]

Physics Seminar
Carlos Ayerbe Gayoso
William and Mary

Clouds Over the Nucleon, a Glimpse Into the Mesonic Content of the Nucleon Through Tagged Deep Inelastic Scattering

Abstract:

The internal structure of the Nucleon has been studied for more than 60 years providing a very good understanding of its dynamics. On the other hand, the internal structure of the pion, which is in principle the simplest QCD bound state, is less explored, and its Parton distribution functions less known. Nevertheless, the presence of a virtual meson-cloud surrounding the Nucleon has been successful to explain the deviation of the Gottfried sum rule and implying the possibility of using the cloud as a virtual target, thus accessing pion structure through the Sullivan process (electron scattering off the nucleon meson cloud). Making use of the tagging technique (measuring one or more of the recoil nucleons in coincidence with the scatter electron) allows to isolate the Sullivan process from competing reactions.

In this talk, I will present the motivation for a pioneering experiment in JLab's Hall A to measure the tagged pion structure function, details of the experiment and of the new detectors, projected results and further steps in the tagged structure functions project.


Thursday January 19, 2019
11:00 am
CEBAF Center L102


Stephanie Tysor
Thomas Jefferson National Accelerator Facility
Physics Division
Hall A & C Administrative Assistant
(office)757-269-6005<callto:757-269-6005> (fax)757-269-5235<callto:757-269-5235>

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