Literature DB >> 33551676

Measurement of the helicity asymmetry E for the reaction γ p → π 0 p : The CBELSA/TAPS Collaboration.

M Gottschall1, F Afzal1, A V Anisovich1,2, D Bayadilov1,2, R Beck1, M Bichow3, K Th Brinkmann4, V Crede5, M Dieterle6, F Dietz4, H Dutz7, H Eberhardt7, D Elsner7, R Ewald7, K Fornet-Ponse7, St Friedrich4, F Frommberger7, A Gridnev2, M Grüner1, E Gutz4, Ch Hammann1, J Hannappel7, J Hartmann1, W Hillert7, Ph Hoffmeister1, Ch Honisch1, T Jude7, S Kammer7, H Kalinowsky1, I Keshelashvili6, P Klassen1, F Klein7, E Klempt1, K Koop1, B Krusche6, M Kube1, M Lang1, I Lopatin2, P Mahlberg1, K Makonyi4, V Metag4, W Meyer3, J Müller1, J Müllers1, M Nanova4, V Nikonov1,2, R Novotny4, D Piontek1, G Reicherz3, T Rostomyan6, A Sarantsev1,2, Ch Schmidt1, H Schmieden7, T Seifen1, V Sokhoyan1, K Spieker1, A Thiel1, U Thoma1, M Urban1, H van Pee1, D Walther1, Ch Wendel1, D Werthmüller6, U Wiedner3, A Wilson1,5, A Winnebeck1, L Witthauer6, Y Wunderlich1.   

Abstract

A measurement of the double-polarization observable E for the reaction γ p → π 0 p is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn using the Bonn frozen-spin butanol (C 4 H 9 OH) target, which provided longitudinally-polarized protons. Circularly-polarized photons were produced via bremsstrahlung of longitudinally-polarized electrons. The data cover the photon energy range from E γ = 600 to 2310 MeV and nearly the complete angular range. The results are compared to and have been included in recent partial wave analyses.
© The Author(s) 2021.

Entities:  

Year:  2021        PMID： 33551676      PMCID： PMC7840663          DOI： 10.1140/epja/s10050-020-00334-2

Source DB:  PubMed          Journal:  Eur Phys J A Hadron Nucl        ISSN： 1434-6001            Impact factor:   3.043


  11 in total

1.  Helicity amplitudes A1/2 and A3/2 for the D13(1520) resonance obtained from the gamma-->p-->-->ppi(0) Reaction.

Authors:  J Ahrens; S Altieri; J R M Annand; G Anton; H-J Arends; K Aulenbacher; R Beck; C Bradtke; A Braghieri; N Degrande; N D'Hose; D Drechsel; H Dutz; S Goertz; P Grabmayr; K Hansen; J Harmsen; D Von Harrach; S Hasegawa; T Hasegawa; E Heid; K Helbing; H Holvoet; L Van Hoorebeke; N Horikawa; T Iwata; O Jahn; P Jennewein; T Kageya; S Kamalov; B Kiel; F Klein; R Kondratiev; K Kossert; J Krimmer; M Lang; B Lannoy; R Leukel; V Lisin; T Matsuda; J C McGeorge; A Meier; D Menze; W Meyer; T Michel; J Naumann; A Panzeri; P Pedroni; T Pinelli; I Preobrajenski; E Radtke; E Reichert; G Reicherz; Ch Rohlof; G Rosner; D Ryckbosch; M Sauer; B Schoch; M Schumacher; B Seitz; T Speckner; N Takabayashi; G Tamas; A Thomas; L Tiator; R Van Vyver; A Wakai; W Weihofen; F Wissmann; F Zapadtka; G Zeitler
Journal:  Phys Rev Lett       Date:  2002-05-24       Impact factor: 9.161

2.  Neutral-pion photoproduction off protons in the energy range 0.3 GeV<E(gamma)<3 GeV.

Authors:  O Bartholomy; V Credé; H van Pee; A V Anisovich; G Anton; R Bantes; Yu Beloglazov; R Bogendörfer; R Castelijns; A Ehmanns; J Ernst; I Fabry; H Flemming; A Fösel; H Freiesleben; M Fuchs; Ch Funke; R Gothe; A Gridnev; E Gutz; S K Höffgen; I Horn; J Hössl; R Joosten; J Junkersfeld; H Kalinowsky; F Klein; E Klempt; H Koch; M Konrad; B Kopf; B Krusche; J Langheinrich; H Löhner; I Lopatin; J Lotz; H Matthäy; D Menze; J Messchendorp; C Morales; D Novinski; M Ostrick; A Radkov; J Reinnarth; A V Sarantsev; S Schadmand; Ch Schmidt; H Schmieden; B Schoch; G Suft; V Sumachev; T Szczepanek; U Thoma; D Walther; Ch Weinheimer
Journal:  Phys Rev Lett       Date:  2005-01-14       Impact factor: 9.161

3.  Accurate test of chiral dynamics in the γp→π0p reaction.

Authors:  D Hornidge; P Aguar Bartolomé; J R M Annand; H J Arends; R Beck; V Bekrenev; H Berghäuser; A M Bernstein; A Braghieri; W J Briscoe; S Cherepnya; M Dieterle; E J Downie; P Drexler; C Fernández-Ramírez; L V Filkov; D I Glazier; P Hall Barrientos; E Heid; M Hilt; I Jaegle; O Jahn; T C Jude; V L Kashevarov; I Keshelashvili; R Kondratiev; M Korolija; A Koulbardis; D Krambrich; S Kruglov; B Krusche; A T Laffoley; V Lisin; K Livingston; I J D MacGregor; J Mancell; D M Manley; E F McNicoll; D Mekterovic; V Metag; S Micanovic; D G Middleton; K W Moores; A Mushkarenkov; B M K Nefkens; M Oberle; M Ostrick; P B Otte; B Oussena; P Pedroni; F Pheron; A Polonski; S Prakhov; J Robinson; T Rostomyan; S Scherer; S Schumann; M H Sikora; A Starostin; I Supek; M Thiel; A Thomas; L Tiator; M Unverzagt; D P Watts; D Werthmüller; L Witthauer
Journal:  Phys Rev Lett       Date:  2013-08-07       Impact factor: 9.161

4.  Progress towards understanding baryon resonances.

Authors:  V Crede; W Roberts
Journal:  Rep Prog Phys       Date:  2013-06-20

5.  Baryons in a relativized quark model with chromodynamics.

Authors: 
Journal:  Phys Rev D Part Fields       Date:  1986-11-01

6.  Amplitude ambiguities in pseudoscalar meson photoproduction.

Authors: 
Journal:  Phys Rev C Nucl Phys       Date:  1996-03

7.  Polarization components in π0 photoproduction at photon energies up to 5.6 GeV.

Authors:  W Luo; E J Brash; R Gilman; M K Jones; M Meziane; L Pentchev; C F Perdrisat; A J R Puckett; V Punjabi; F R Wesselmann; A Ahmidouch; I Albayrak; K A Aniol; J Arrington; A Asaturyan; O Ates; H Baghdasaryan; F Benmokhtar; W Bertozzi; L Bimbot; P Bosted; W Boeglin; C Butuceanu; P Carter; S Chernenko; M E Christy; M Commisso; J C Cornejo; S Covrig; S Danagoulian; A Daniel; A Davidenko; D Day; S Dhamija; D Dutta; R Ent; S Frullani; H Fenker; E Frlez; F Garibaldi; D Gaskell; S Gilad; Y Goncharenko; K Hafidi; D Hamilton; D W Higinbotham; W Hinton; T Horn; B Hu; J Huang; G M Huber; E Jensen; H Kang; C Keppel; M Khandaker; P King; D Kirillov; M Kohl; V Kravtsov; G Kumbartzki; Y Li; V Mamyan; D J Margaziotis; P Markowitz; A Marsh; Y Matulenko; J Maxwell; G Mbianda; D Meekins; Y Melnik; J Miller; A Mkrtchyan; H Mkrtchyan; B Moffit; O Moreno; J Mulholland; A Narayan; S Nedev; E Piasetzky; W Pierce; N M Piskunov; Y Prok; R D Ransome; D S Razin; P E Reimer; J Reinhold; O Rondon; M Shabestari; A Shahinyan; K Shestermanov; S Širca; I Sitnik; L Smykov; G Smith; L Solovyev; P Solvignon; I I Strakovsky; R Subedi; R Suleiman; E Tomasi-Gustafsson; A Vasiliev; M Veilleux; S Wood; Z Ye; Y Zanevsky; X Zhang; Y Zhang; X Zheng; L Zhu
Journal:  Phys Rev Lett       Date:  2012-06-01       Impact factor: 9.161

8.  Well-established nucleon resonances revisited by double-polarization measurements.

Authors:  A Thiel; A V Anisovich; D Bayadilov; B Bantes; R Beck; Yu Beloglazov; M Bichow; S Böse; K-Th Brinkmann; Th Challand; V Crede; F Dietz; P Drexler; H Dutz; H Eberhardt; D Elsner; R Ewald; K Fornet-Ponse; St Friedrich; F Frommberger; Ch Funke; M Gottschall; M Grüner; E Gutz; Ch Hammann; J Hannappel; J Hartmann; W Hillert; Ph Hoffmeister; Ch Honisch; I Jaegle; I Jürgensen; D Kaiser; H Kalinowsky; F Kalischewski; S Kammer; I Keshelashvili; V Kleber; F Klein; E Klempt; B Krusche; M Lang; I Lopatin; Y Maghrbi; K Makonyi; V Metag; W Meyer; J Müller; M Nanova; V Nikonov; R Novotny; D Piontek; G Reicherz; A Sarantsev; Ch Schmidt; H Schmieden; T Seifen; V Sokhoyan; V Sumachev; U Thoma; H Vanpee; D Walther; Ch Wendel; U Wiedner; A Wilson; A Winnebeck; Y Wunderlich
Journal:  Phys Rev Lett       Date:  2012-09-05       Impact factor: 9.161

9.  N(1520) 3/2(-) helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions.

Authors:  J Hartmann; H Dutz; A V Anisovich; D Bayadilov; R Beck; M Becker; Y Beloglazov; A Berlin; M Bichow; S Böse; K-Th Brinkmann; V Crede; M Dieterle; H Eberhardt; D Elsner; K Fornet-Ponse; St Friedrich; F Frommberger; Ch Funke; M Gottschall; A Gridnev; M Grüner; E Gutz; Ch Hammann; J Hannappel; V Hannen; J Herick; W Hillert; Ph Hoffmeister; Ch Honisch; O Jahn; T Jude; A Käser; D Kaiser; H Kalinowsky; F Kalischewski; P Klassen; I Keshelashvili; F Klein; E Klempt; K Koop; B Krusche; M Kube; M Lang; I Lopatin; K Makonyi; F Messi; V Metag; W Meyer; J Müller; M Nanova; V Nikonov; D Novinski; R Novotny; D Piontek; C Rosenbaum; B Roth; G Reicherz; T Rostomyan; A Sarantsev; Ch Schmidt; H Schmieden; R Schmitz; T Seifen; V Sokhoyan; Ph Thämer; A Thiel; U Thoma; M Urban; H van Pee; D Walther; Ch Wendel; U Wiedner; A Wilson; A Winnebeck; L Witthauer; Y Wunderlich
Journal:  Phys Rev Lett       Date:  2014-08-04       Impact factor: 9.161

10.  First measurement of the helicity asymmetry for γp → pπ0 in the resonance region.

Authors:  M Gottschall; A V Anisovich; B Bantes; D Bayadilov; R Beck; M Bichow; S Böse; K-Th Brinkmann; Th Challand; V Crede; F Dietz; H Dutz; H Eberhardt; D Elsner; R Ewald; K Fornet-Ponse; St Friedrich; F Frommberger; Ch Funke; A Gridnev; M Grüner; E Gutz; Ch Hammann; J Hannappel; J Hartmann; W Hillert; Ph Hoffmeister; Ch Honisch; I Jaegle; D Kaiser; H Kalinowsky; S Kammer; I Keshelashvili; F Klein; E Klempt; K Koop; B Krusche; M Kube; M Lang; I Lopatin; Y Maghrbi; K Makonyi; V Metag; W Meyer; J Müller; M Nanova; V Nikonov; R Novotny; D Piontek; G Reicherz; T Rostomyan; A Sarantsev; St Schaepe; Ch Schmidt; H Schmieden; R Schmitz; T Seifen; V Sokhoyan; A Thiel; U Thoma; M Urban; H van Pee; D Walther; Ch Wendel; U Wiedner; A Wilson; A Winnebeck
Journal:  Phys Rev Lett       Date:  2014-01-10       Impact factor: 9.161
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