2015/10/30 by Lloyd W. Cawthorne, Lloyd Cawthorne, Cawthorne, Lloyd W. +2
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.48550/arxiv.1510.09136
Proceedings to the 8th International Workshop on Chiral Dynamics 2015
openalex publication_date 2015/10/30 · arxiv created 2016/02/02 · arxiv updated 2016/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present an ongoing project to assess the importance of D-waves and the\n\Δ (1232) resonance for descriptions of neutral pion photoproduction in\nHeavy Baryon Chiral Perturbation Theory. This research has been motivated by\ndata published by the A2 and CB-TAPS collaborations at MAMI [1]. This data has\nreached unprecedented levels of accuracy from threshold through to the \Δ\nresonance. Accompanying the experimental work, there has also been a series of\npublications studying the theory that show that, to go beyond an energy of\nE_\γ=170 MeV, it is necessary to include other aspects, in particular the\n\Δ (1232) as a degree of freedom [2] and possibly higher partial waves\n[3].\n