Photoproduction of π0 mesons off protons and neutrons in the second and third nucleon resonance regions

Publikationstyp:

Zeitschriftenaufsatz

Metadaten:

Autoren

M Dieterle
D Werthmueller
S Abt
F Afzal
P Aguar Bartolome
Z Ahmed
J Ahrens
JRM Annand
HJ Arends
M Bashkanov
R Beck
M Biroth
N Borisov
A Braghieri
WJ Briscoe
S Cherepnya
F Cividini
C Collicott
S Costanza
A Denig
EJ Downie
P Drexler
LV Fil'kov
S Garni
DI Glazier
I Gorodnov
W Gradl
M Guenther
D Gurevich
L Heijkenskjoeld
D Hornidge
GM Huber
A Kaeser
VL Kashevarov
S Kay
I Keshelashvili
R Kondratiev
M Korolija
B Krusche
A Lazarev
V Lisin
K Livingston
S Lutterer
IJD MacGregor
DM Manley
PP Martel
JC McGeorge
V Metag
DG Middleton
R Miskimen
E Mornacchi
A Mushkarenkov
A Neganov
A Neiser
M Oberle
M Ostrick
PB Otte
B Oussena
D Paudyal
P Pedroni
A Polonski
SN Prakhov
G Ron
T Rostomyan
A Sarty
C Sfienti
V Sokhoyan
K Spieker
O Steffen
II Strakovsky
T Strub
I Supek
A Thiel
M Thiel
A Thomas
M Unverzagt
Yu A Usov
S Wagner
NK Walford
DP Watts
J Wettig
L Witthauer
M Wolfes
LA Zana

Autoren-URL

https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000435808400005&DestLinkType=FullRecord&DestApp=WOS_CPL

DOI

10.1103/PhysRevC.97.065205

eISSN

2469-9993

Externe Identifier

Clarivate Analytics Document Solution ID: GK0NU

ISSN

2469-9985

Ausgabe der Veröffentlichung

Zeitschrift

PHYSICAL REVIEW C

Artikelnummer

ARTN 065205

Datum der Veröffentlichung

2018

Status

Published

Titel

Photoproduction of π<SUP>0</SUP> mesons off protons and neutrons in the second and third nucleon resonance regions

Sub types

Article

Ausgabe der Zeitschrift

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:

Autoren

M Dieterle
D Werthmüller
S Abt
F Afzal
P Aguar Bartolome
Z Ahmed
J Ahrens
JRM Annand
HJ Arends
M Bashkanov
R Beck
M Biroth
N Borisov
A Braghieri
WJ Briscoe
S Cherepnya
F Cividini
C Collicott
S Costanza
A Denig
EJ Downie
P Drexler
LV Fil'kov
S Garni
DI Glazier
I Gorodnov
W Gradl
M Günther
D Gurevich
L Heijkenskjöld
D Hornidge
GM Huber
A Käser
VL Kashevarov
S Kay
I Keshelashvili
R Kondratiev
M Korolija
B Krusche
A Lazarev
V Lisin
K Livingston
S Lutterer
IJD MacGregor
DM Manley
PP Martel
JC McGeorge
V Metag
DG Middleton
R Miskimen
E Mornacchi
A Mushkarenkov
A Neganov
A Neiser
M Oberle
M Ostrick
PB Otte
B Oussena
D Paudyal
P Pedroni
A Polonski
SN Prakhov
G Ron
T Rostomyan
A Sarty
C Sfienti
V Sokhoyan
K Spieker
O Steffen
II Strakovsky
T Strub
I Supek
A Thiel
M Thiel
A Thomas
M Unverzagt
Yu A Usov
S Wagner
NK Walford
DP Watts
J Wettig
L Witthauer
M Wolfes
LA Zana

DOI

10.1103/physrevc.97.065205

eISSN

2469-9993

ISSN

2469-9985

Ausgabe der Veröffentlichung

Zeitschrift

Physical Review C

Sprache

Artikelnummer

065205

Online publication date

2018

Status

Published online

Herausgeber

American Physical Society (APS)

Herausgeber URL

http://dx.doi.org/10.1103/physrevc.97.065205

Datum der Datenerfassung

2018

Titel

Photoproduction of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> mesons off protons and neutrons in the second and third nucleon resonance regions

Ausgabe der Zeitschrift

Datenquelle: Crossref

Abstract

Photoproduction of mesons off quasi-free nucleons bound in the deuteron allows to study the electromagnetic excitation spectrum of the neutron and the isospin structure of the excitation of nucleon resonances. The database for such reactions is much more sparse than for free proton targets. Single $\pi^0$ photoproduction off quasi-free nucleons from the deuteron was experimentally studied. Nuclear effects were investigated by a comparison of the results for free protons and quasi-free protons and used as a correction for the quasi-free neutron data. The experiment was performed at the tagged photon beam of the Mainz MAMI accelerator for photon energies between 0.45~GeV and 1.4~GeV, using an almost $4\pi$ electromagnetic calorimeter composed of the Crystal Ball and TAPS detectors. A complete kinematic reconstruction of the final state removed the effects of Fermi motion. Reaction model predictions and PWA for $\gamma n\rightarrow n\pi^{0}$, based on fits to data for the other isospin channels, disagreed between themselves and no model provided a good description of the new data. The results demonstrate clearly the importance of a measurement of the fully neutral final state for the isospin decomposition of the cross section. Model refits, for example from the Bonn-Gatchina analysis, show that the new and the previous data for the other three isospin channels can be simultaneously described when the contributions of several partial waves are modified. The results are also relevant for the suppression of the higher resonance bumps in total photoabsorption on nuclei, which are not well understood.

Autoren

M Dieterle
D Werthmüller
S Abt
F Afzal
P Aguar Bartolome
Z Ahmed
J Ahrens
JRM Annand
HJ Arends
M Bashkanov
R Beck
M Biroth
N Borisov
A Braghieri
WJ Briscoe
S Cherepnya
F Cividini
C Collicott
S Costanza
A Denig
EJ Downie
P Drexler
LV Fil'kov
S Garni
DI Glazier
I Gorodnov
W Gradl
M Günther
D Gurevich
L Heijkenskjöld
D Hornidge
GM Huber
A Käser
VL Kashevarov
S Kay
I Keshelashvili
R Kondratiev
M Korolija
B Krusche
A Lazarev
V Lisin
K Livingston
S Lutterer
IJD MacGregor
DM Manley
PP Martel
JC McGeorge
V Metag
DG Middleton
R Miskimen
E Mornacchi
A Mushkarenkov
A Neganov
A Neiser
M Oberle
M Ostrick
PB Otte
B Oussena
D Paudyal
P Pedroni
A Polonski
SN Prakhov
G Ron
T Rostomyan
A Sarty
C Sfienti
V Sokhoyan
K Spieker
O Steffen
II Strakovsky
T Strub
I Supek
A Thiel
M Thiel
A Thomas
M Unverzagt
Yu A Usov
S Wagner
NK Walford
DP Watts
J Wettig
L Witthauer
M Wolfes
LA Zana

Autoren-URL

http://arxiv.org/abs/1805.10504v1

Schlüsselwörter

nucl-ex
nucl-ex

Notes

excepted for publication in Phys. Rev. C

Datum der Veröffentlichung

2018

Herausgeber URL

http://dx.doi.org/10.1103/PhysRevC.97.065205

Datum der Datenerfassung

2018

Datum, an dem der Datensatz öffentlich gemacht wurde

2018

Titel

Photoproduction of {\boldmath{$π^{0}$}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region

Files

1805.10504v1.pdf

Datenquelle: arXiv

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Photoproduction of π0 mesons off protons and neutrons in the second and third nucleon resonance regions

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