Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory

Lloyd Cawthorne; Judith McGovern

Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory

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Abstract

We present an ongoing project to assess the importance of D-waves and the Δ(1232) resonance for descriptions of neutral pion photoproduction in Heavy Baryon Chiral Perturbation Theory. This research has been motivated by data published by the A2 and CB-TAPS collaborations at MAMI [1]. This data has reached unprecedented levels of accuracy from threshold through to the Δ resonance. Accompanying the experimental work, there has also been a series of publications studying the theory that show that, to go beyond an energy of Eγ=170 MeV, it is necessary to include other aspects, in particular the Δ(1232) as a degree of freedom [2] and possibly higher partial waves [3].

Original language	English
Title of host publication	Proceedings, 8th International Workshop on Chiral Dynamics (CD15)
Subtitle of host publication	29 Jun - 03 Jul 2015. Pisa, Italy
Editors	Laura Marcucci, Michele Viviani
Publisher	Scuola Internazionale Superiore di Studi Avanzati
Publication status	Published - Jan 2016

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title = "Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory",

abstract = "We present an ongoing project to assess the importance of D-waves and the Δ(1232) resonance for descriptions of neutral pion photoproduction in Heavy Baryon Chiral Perturbation Theory. This research has been motivated by data published by the A2 and CB-TAPS collaborations at MAMI [1]. This data has reached unprecedented levels of accuracy from threshold through to the Δ resonance. Accompanying the experimental work, there has also been a series of publications studying the theory that show that, to go beyond an energy of Eγ=170 MeV, it is necessary to include other aspects, in particular the Δ(1232) as a degree of freedom [2] and possibly higher partial waves [3].",

author = "Lloyd Cawthorne and Judith McGovern",

year = "2016",

month = jan,

language = "English",

editor = "Marcucci, {Laura } and Michele Viviani",

booktitle = "Proceedings, 8th International Workshop on Chiral Dynamics (CD15)",

publisher = "Scuola Internazionale Superiore di Studi Avanzati",

address = "Italy",

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Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory. / Cawthorne, Lloyd; McGovern, Judith.
Proceedings, 8th International Workshop on Chiral Dynamics (CD15): 29 Jun - 03 Jul 2015. Pisa, Italy . ed. / Laura Marcucci; Michele Viviani. Scuola Internazionale Superiore di Studi Avanzati, 2016. 72.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory

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AU - McGovern, Judith

PY - 2016/1

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N2 - We present an ongoing project to assess the importance of D-waves and the Δ(1232) resonance for descriptions of neutral pion photoproduction in Heavy Baryon Chiral Perturbation Theory. This research has been motivated by data published by the A2 and CB-TAPS collaborations at MAMI [1]. This data has reached unprecedented levels of accuracy from threshold through to the Δ resonance. Accompanying the experimental work, there has also been a series of publications studying the theory that show that, to go beyond an energy of Eγ=170 MeV, it is necessary to include other aspects, in particular the Δ(1232) as a degree of freedom [2] and possibly higher partial waves [3].

AB - We present an ongoing project to assess the importance of D-waves and the Δ(1232) resonance for descriptions of neutral pion photoproduction in Heavy Baryon Chiral Perturbation Theory. This research has been motivated by data published by the A2 and CB-TAPS collaborations at MAMI [1]. This data has reached unprecedented levels of accuracy from threshold through to the Δ resonance. Accompanying the experimental work, there has also been a series of publications studying the theory that show that, to go beyond an energy of Eγ=170 MeV, it is necessary to include other aspects, in particular the Δ(1232) as a degree of freedom [2] and possibly higher partial waves [3].

M3 - Conference contribution

BT - Proceedings, 8th International Workshop on Chiral Dynamics (CD15)

A2 - Marcucci, Laura

A2 - Viviani, Michele

PB - Scuola Internazionale Superiore di Studi Avanzati

ER -

Impact of the Delta (1232) resonance on neutral pion photoproduction in chiral perturbation theory

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