First measurement of helicity-dependent cross sections in π0n photoproduction from quasi-free nucleons
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- A Kaser
- M Dieterle
- L Witthauer
- S Abt
- P Achenbach
- P Adlarson
- F Afzal
- Z Ahmed
- J Ahrens
- JRM Annand
- HJ Arends
- M Bashkanov
- R Beck
- M Biroth
- NS Borisov
- A Braghieri
- WJ Briscoe
- F Cividini
- C Collicott
- S Costanza
- A Denig
- EJ Downie
- P Drexler
- A Fix
- S Garni
- DI Glazier
- I Gorodnov
- W Gradl
- M Gunther
- GM Gurevich
- L Heijkenskjoeld
- D Hornidge
- GM Huber
- VL Kashevarov
- S Kay
- I Keshelashvili
- R Kondratiev
- M Korolija
- B Krusche
- AB Lazarev
- V Lisin
- K Livingston
- S Lutterer
- IJD MacGregor
- DM Manley
- PP Martel
- V Metag
- W Meyer
- R Miskimen
- E Mornacchi
- A Mushkarenkov
- AB Neganov
- A Neiser
- M Oberle
- M Ostrick
- PB Otte
- D Paudyal
- P Pedroni
- A Polonski
- SN Prakhov
- G Reicherz
- G Ron
- T Rostomyan
- A Sarty
- C Sfienti
- V Sokhoyan
- K Spieker
- O Steffen
- II Strakovsky
- Th Strub
- I Supek
- A Thiel
- M Thiel
- A Thomas
- M Unverzagt
- Yu A Usov
- S Wagner
- NK Walford
- DP Watts
- D Werthmuller
- J Wettig
- M Wolfes
- L Zana
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000452318400040&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1016/j.physletb.2018.10.006
- eISSN
- 1873-2445
- Externe Identifier
- Clarivate Analytics Document Solution ID: HD2CJ
- ISSN
- 0370-2693
- Zeitschrift
- PHYSICS LETTERS B
- Paginierung
- 305 - 312
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Titel
- First measurement of helicity-dependent cross sections in π<SUP>0</SUP><i>n</i> photoproduction from quasi-free nucleons
- Sub types
- Article
- Ausgabe der Zeitschrift
- 786
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Autoren
- A Käser
- M Dieterle
- L Witthauer
- S Abt
- P Achenbach
- P Adlarson
- F Afzal
- Z Ahmed
- J Ahrens
- JRM Annand
- HJ Arends
- M Bashkanov
- R Beck
- M Biroth
- NS Borisov
- A Braghieri
- WJ Briscoe
- F Cividini
- C Collicott
- S Costanza
- A Denig
- EJ Downie
- P Drexler
- A Fix
- S Garni
- DI Glazier
- I Gorodnov
- W Gradl
- M Günther
- GM Gurevich
- L Heijkenskjöld
- D Hornidge
- GM Huber
- VL Kashevarov
- S Kay
- I Keshelashvili
- R Kondratiev
- M Korolija
- B Krusche
- AB Lazarev
- V Lisin
- K Livingston
- S Lutterer
- IJD MacGregor
- DM Manley
- PP Martel
- V Metag
- W Meyer
- R Miskimen
- E Mornacchi
- A Mushkarenkov
- AB Neganov
- A Neiser
- M Oberle
- M Ostrick
- PB Otte
- D Paudyal
- P Pedroni
- A Polonski
- SN Prakhov
- G Reicherz
- G Ron
- T Rostomyan
- A Sarty
- C Sfienti
- V Sokhoyan
- K Spieker
- O Steffen
- II Strakovsky
- Th Strub
- I Supek
- A Thiel
- M Thiel
- A Thomas
- M Unverzagt
- Yu A Usov
- S Wagner
- NK Walford
- DP Watts
- D Werthmüller
- J Wettig
- M Wolfes
- L Zana
- DOI
- 10.1016/j.physletb.2018.10.006
- ISSN
- 0370-2693
- Zeitschrift
- Physics Letters B
- Sprache
- en
- Paginierung
- 305 - 312
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Herausgeber
- Elsevier BV
- Herausgeber URL
- http://dx.doi.org/10.1016/j.physletb.2018.10.006
- Datum der Datenerfassung
- 2021
- Titel
- First measurement of helicity-dependent cross sections in π0η photoproduction from quasi-free nucleons
- Ausgabe der Zeitschrift
- 786
Datenquelle: Crossref
- Abstract
- The helicity-dependent cross sections for the photoproduction of $\pi^0\eta$ pairs have been measured for the first time. The experiment was performed at the tagged photon facility of the Mainz MAMI accelerator with the combined Crystal Ball - TAPS calorimeter. The experiment used a polarized deuterated butanol target and a circularly polarized photon beam. This arrangement allowed the $\sigma_{1/2}$ (photon and target spin antiparallel) and $\sigma_{3/2}$ (parallel spins) components to be measured for quasi-free production of $\pi^0\eta$ pairs off protons and neutrons. The main finding is that the two helicity components contribute identically, within uncertainties, for both participant protons and neutrons. The absolute couplings for protons and neutrons are also identical. This means that nucleon resonances contributing to this reaction in the investigated energy range have almost equal electromagnetic helicity couplings, $A_{1/2}^{n,p}$ and $A_{3/2}^{n,p}$. Identical couplings for protons and neutrons are typical for $\Delta$ resonances and identical $A_{1/2}$ and $A_{3/2}$ components are only possible for $J\geq 3/2$ states, which constrains possible contributions of nucleon resonances.
- Autoren
- A Käser
- M Dieterle
- L Witthauer
- S Abt
- P Achenbach
- P Adlarson
- F Afzal
- Z Ahmed
- J Ahrens
- JRM Annand
- HJ Arends
- M Bashkanov
- R Beck
- M Biroth
- NS Borisov
- A Braghieri
- WJ Briscoe
- F Cividini
- C Collicott
- S Costanza
- A Denig
- EJ Downie
- P Drexler
- A Fix
- S Garni
- DI Glazier
- I Gorodnov
- W Gradl
- M Günther
- GM Gurevich
- L Heijkenskjöld
- D Hornidge
- GM Huber
- VL Kashevarov
- S Kay
- I Keshelashvili
- R Kondratiev
- M Korolija
- B Krusche
- AB Lazarev
- V Lisin
- K Livingston
- S Lutterer
- IJD MacGregor
- DM Manley
- PP Martel
- V Metag
- W Meyer
- R Miskimen
- E Mornacchi
- A Mushkarenkov
- AB Neganov
- A Neiser
- M Oberle
- M Ostrick
- PB Otte
- D Paudyal
- P Pedroni
- A Polonski
- SN Prakhov
- G Reicherz
- G Ron
- T Rostomyan
- A Sarty
- C Sfienti
- V Sokhoyan
- K Spieker
- O Steffen
- II Strakovsky
- Th Strub
- I Supek
- A Thiel
- M Thiel
- A Thomas
- M Unverzagt
- Yu A Usov
- S Wagner
- NK Walford
- DP Watts
- D Werthmüller
- J Wettig
- M Wolfes
- L Zana
- Autoren-URL
- http://arxiv.org/abs/1810.02778v1
- Schlüsselwörter
- nucl-ex
- nucl-ex
- Notes
- accepted for publication in Phys. Lett. B
- Datum der Veröffentlichung
- 2018
- Herausgeber URL
- http://dx.doi.org/10.1016/j.physletb.2018.10.006
- Datum der Datenerfassung
- 2018
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2018
- Titel
- First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons
Files
1810.02778v1.pdf
Datenquelle: arXiv
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