Mar 23 – 27, 2020
Brooklyn, NY
US/Eastern timezone

From bound nucleons to the free neutron

Mar 25, 2020, 11:00 AM
20m
Brooklyn, NY

Brooklyn, NY

333 Adams Street, Brooklyn, New York 11201, USA
Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Efrain Segarra (Massachusetts Institute of Technology)

Description

The lack of a neutron target has resulted in a decades-long effort to understand the free neutron structure in order to test SU(6) symmetry breaking mechanisms. Approaches to address this open question traditionally extract the free neutron structure from proton + deuterium DIS data (and various other reactions such as jet production or W charge asymmetries).

Here we present a novel approach to extracting the free neutron structure by utilizing all available structure functions of nuclei (from deuterium to lead), while consistently accounting for partonic medium-modifications in atomic nuclei. Using such a wide span of nuclei provides a large lever arm that allows us to precisely constrain the neutron structure function, even at high-x.

We also discuss extracting the free neutron structure from A=3 nuclei, as proposed by the MARATHON collaboration, and the theoretical uncertainties associated with such an extraction. We present a complimentary approach to extracting the free neutron structure from A=3 nuclei with a convolution model.

Primary author

Efrain Segarra (Massachusetts Institute of Technology)

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