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12–15 Feb 2026
Banff, Alberta
Canada/Mountain timezone
Early registration is CLOSED - late registration is still possible.

A New Angle into the Proton: u-Channel Meson Electroproduction

14 Feb 2026, 08:30
15m
Kinnear Centre Room (KC 303) (Banff, Alberta)

Kinnear Centre Room (KC 303)

Banff, Alberta

Contributed Oral QCD and Hadrons QCD

Speaker

Alicia Postuma

Description

Due to the dramatic running of the QCD coupling constant $\alpha_S$, hadronic structure varies drastically with measurement scale. Therefore, combining complementary measurements of many unique observables is key to completing our picture of the proton. The KaonLT experiment at Jefferson Laboratory probes hadron structure through measurements of Deep Exclusive Meson Production (DEMP) reactions. My research is to analyze a subset of these reactions known as the $u$-channel, in which the meson is produced at a backward angle. These reactions offer unique access to the $qqqq\bar{q}$ (valence quark plus meson) part of the nucleon wave function. Backward-angle DEMP is also anticipated to measure the distribution of baryon number within the proton. This talk will describe the $u$-channel analysis of the KaonLT data, focusing on event selection for cross-section measurements. Mostly unexplored, the $u$-channel offers unique physics opportunities, complementary to previous measurements, bringing us one step closer to a complete understanding of the nucleon.

Your current academic level PhD student
Your email address acp548@uregina.ca
Affiliation University of Regina
Supervisor name Garth Huber
Supervisor email garth.huber@uregina.ca

Primary author

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