2023 CAP Congress / Congrès de l'ACP 2023

Session

(DNP) M2-4 Hadronic physics, nucleon structure, QCD | Physique hadronique, structure des nucléons, QCD (DPN)

M2-4

19 Jun 2023, 14:00

University of New Brunswick

Conveners

(DNP) M2-4 Hadronic physics, nucleon structure, QCD | Physique hadronique, structure des nucléons, QCD (DPN)

• Thomas Brunner (McGill University)

3748. Probing Emergent Hadronic Mass with Deep Exclusive Meson Production

Prof. Garth Huber (University of Regina)

19/06/2023, 14:15

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Non-Student) / Orale (non-étudiant(e))

A key question of modern physics concerns how the bulk of the universe's visible mass emerges from the Standard Model (SM). Some of this mass is generated by Higgs boson couplings to matter fields in the SM, but of the constituents of atomic matter, this suffices to explain only the mass of electrons in its entirety. The overwhelming majority of atomic mass resides in the nucleus, which is...

3738. (G*) Charged pion electroproduction reaction studies at Jefferson Lab

Ali Usman (University of Regina)

19/06/2023, 14:30

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

There are many open questions in the field of hadronic structure, as the properties of constituent quarks and gluons (e.g. spin and mass) do not explicitly add up to the properties of hadrons. The pion is a simple hadron, consisting of only two valence quarks (up and down), which makes it an ideal candidate for studies of hadronic structure. The exclusive pion electroproduction reaction, with...

3721. Beam Asymmetry in $\gamma$ p $\rightarrow$ $\eta$ $\Delta^+$ at GlueX

Varun Neelamana (University of Regina)

19/06/2023, 14:45

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

Photoproduction mechanisms studied in the GlueX experiment allows the mapping of light mesons in unprecedented detail with particular interest in exotic meson candidates. This is achieved by impinging an 8.2-8.8 GeV linearly polarized photon beam on a liquid hydrogen target. The measurement of beam asymmetry $\Sigma$ will help constrain quasi-particle t-channel exchange processes using Regge...

3637. (G*) From Spin to Structure: Beam Single-Spin Asymmetry and the Strong Force

Alicia Postuma

19/06/2023, 15:00

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The KaonLT/PionLT Collaboration probes hadron structure by measuring deep exclusive meson production reactions at Jefferson Lab. A set of high momentum, high resolution spectrometers in Hall C allow for precision measurements from which form factors and other observables can be extracted. One possible measurement is the beam spin asymmetry, which describes the fractional difference in...

3831. (G*) Renormalizing the unquenched quark model

Cyrus Robertson Orkish

19/06/2023, 15:15

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Hadrons are typically described using "quenched" constituent quark models, which posit a Hamiltonian acting on the state space of the valence quarks, neglecting mixing of higher Fock states. In recent years, experimentalists have observed states which are not well characterized by these models, motivating quark modellers to examine the effects of unquenching. The resultant mass shifts throw...