[Theory-seminars] Fw: Seminars this week

[Carlota Andres Casas]

Dear all

Here you have the details of tomorrow's seminar

Theory Seminar
Monday, December 2, 1:00 pm, Room L102
Theo Motta (Adelaide University), "Quark structure of Hadrons, Nuclei and Neutron Stars"

Abstract:
With densities going above 6 times nuclear matter densities, the core of neutron stars are our only laboratories to study high density nuclear matter and QCD. The composition of such cores is unknown, but after the measurement of the super massive pulsar PSR-J1614, the question of whether or not hyperons may be present in these stars, or perhaps deconfined quarks, became extremely pressing. Nowadays, new data from the gravitational waves GW170817 give us some new constrains and help us to understand what goes on in such dense objects. In this talk I will give a brief overview of the quark-meson coupling model for nuclear interactions and show how it helps shed some light into these issues

Bluejeans connection: https://bluejeans.com/610445877

--

Postdoctoral researcher
Theory Center - Jefferson Lab
12000 Jefferson Avenue,
Newport News, VA 23606 USA
CEBAF center, office A206


________________________________
From: Theory-seminars <theory-seminars-bounces at jlab.org> on behalf of Raza Sufian <sufian at jlab.org>
Sent: Sunday, December 1, 2019 8:26 PM
To: theory-seminars at jlab.org <theory-seminars at jlab.org>
Subject: [Theory-seminars] Seminars this week

Dear All,

I apologize for not having any announcement for the theory seminars earlier. Here are the announcements for the seminars this week:

Bluejeans connection: https://bluejeans.com/610445877

Theory Seminar
Monday, December 2, 1:00 pm, Room L102

Theo Motta (Adelaide University)

Title/Abstract: TBD, TBD

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Theory Seminar
Wednesday, December 4, 1:00 pm, Room F224-225

Wim Cosyn (Florida International University)

Title: Neutron structure from deuteron DIS with spectator proton tagging

Abstract: Electron-deuteron deep inelastic scattering with detection of a spectator proton enables extraction of neutron partonic structure with maximum control of nuclear effects.  We outline the theoretical formalism to describe these reactions, based on methods of light-front nuclear structure.  We show how low-energy nuclear structure enters into tagged observables (cross sections, asymmetries) and how the dependence on the kinematics of the tagged spectator enters.  As an application, we focus on the tagged longitudinal double spin asymmetry. We consider two possible denominators in the asymmetry: i) with the unpolarized deuteron (-1,0,+1 states), ii) with only maximum (-1,+1) states; we demonstrate the latter asymmetry results in smaller nuclear depolarization effects at small spectator momenta. The method of pole extrapolation of these asymmetries can be used to extract g_1n of the free neutron.  This would be possible over a wide kinematic range at a future EIC with polarized deuteron beams and forward detectors.  In the last part of the talk, we discuss possible extensions with deuteron tensor polarization, A=3 nuclei and the effects of nuclear final-state interactions.

Thank you.
-Carlota & Raza
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