High statistics study of the reaction gamma p -> p pi(0)eta

E. Gutz; V. Crede; V. Sokhoyan; H. van Pee; A. V. Anisovich; J.C.S. Bacelar; B. Bantes; O. Bartholomy; D. Bayadilov; R. Beck; Y. A. Beloglazov; R. Castelijns; H. Dutz; D. Elsner; R. Ewald; F. Frommberger; M. Fuchs; Ch. Funke; R. Gregor; A. B. Gridnev; W. Hillert; Ph. Hoffmeister; I. Horn; I. Jaegle; J. Junkersfeld; H. Kalinowsky; S. Kammer; V. Kleber; Frank Klein; Friedrich Klein; E. Klempt; M. Kotulla; B. Krusche; M. Lang; Herbert Löhner; I. V. Lopatin; S. Lugert; T. Mertens; J. G. Messchendorp; V. Metag; M. Nanova; V. A. Nikonov; D. Novinsky; R. Novotny; M. Ostrick; L. Pant; M. Pfeiffer; D. Piontek; A. Roy; S. Shende; CBELSA-TAPS Collaboration

doi:10.1140/epja/i2014-14074-1

High statistics study of the reaction gamma p -> p pi(0)eta

E. Gutz^*, V. Crede, V. Sokhoyan, H. van Pee, A. V. Anisovich, J.C.S. Bacelar, B. Bantes, O. Bartholomy, D. Bayadilov, R. Beck, Y. A. Beloglazov, R. Castelijns, H. Dutz, D. Elsner, R. Ewald, F. Frommberger, M. Fuchs, Ch. Funke, R. Gregor, A. B. GridnevW. Hillert, Ph. Hoffmeister, I. Horn, I. Jaegle, J. Junkersfeld, H. Kalinowsky, S. Kammer, V. Kleber, Frank Klein, Friedrich Klein, E. Klempt, M. Kotulla, B. Krusche, M. Lang, Herbert Löhner, I. V. Lopatin, S. Lugert, T. Mertens, J. G. Messchendorp, V. Metag, M. Nanova, V. A. Nikonov, D. Novinsky, R. Novotny, M. Ostrick, L. Pant, M. Pfeiffer, D. Piontek, A. Roy, S. Shende, CBELSA-TAPS Collaboration

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Photoproduction off protons of the p pi(0)eta three-body final state was studied with the Crystal Barrel/TAPS detector, at the electron stretcher accelerator ELSA in Bonn, for incident energies from the pi(0)eta production threshold up to 2.5 GeV. Differential cross sections and the total cross sections are presented. The use of linearly polarized photons gives access to the polarization observables Sigma, I-s, and I-c, the latter two characterize beam asymmetries in case of three-body final states. Delta(1232)(eta), N(1535)1/2(-) pi, and pa(0)(980) are the dominant isobars contributing to the reaction. The partial wave analysis confirms the existence of some nucleon and Delta resonances, for which so far only fair evidence was reported. A large number of decay modes of known nucleon and Delta resonances is presented. It is shown that detailed investigations of decay branching ratios may provide a key to unravelling the structure of nucleon and Delta resonances.

Original language	English
Article number	74
Number of pages	27
Journal	European Physical Journal A
Volume	50
Issue number	4
DOIs	https://doi.org/10.1140/epja/i2014-14074-1
Publication status	Published - 17-Apr-2014

Keywords

RELATIVISTIC QUARK-MODEL
STRANGE-BARYON SPECTRUM
PARTIAL-WAVE ANALYSIS
NUCLEON RESONANCES
CHIRAL DYNAMICS
BEAM ASYMMETRY
I-S
PHOTOPRODUCTION
MESON
SCATTERING

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Gutz, E., Crede, V., Sokhoyan, V., van Pee, H., Anisovich, A. V., Bacelar, J. C. S., Bantes, B., Bartholomy, O., Bayadilov, D., Beck, R., Beloglazov, Y. A., Castelijns, R., Dutz, H., Elsner, D., Ewald, R., Frommberger, F., Fuchs, M., Funke, C., Gregor, R., ... CBELSA-TAPS Collaboration (2014). High statistics study of the reaction gamma p -> p pi(0)eta. European Physical Journal A, 50(4), Article 74. https://doi.org/10.1140/epja/i2014-14074-1

@article{c56b5421015b49dda6107471f77fd3d4,

title = "High statistics study of the reaction gamma p -> p pi(0)eta",

abstract = "Photoproduction off protons of the p pi(0)eta three-body final state was studied with the Crystal Barrel/TAPS detector, at the electron stretcher accelerator ELSA in Bonn, for incident energies from the pi(0)eta production threshold up to 2.5 GeV. Differential cross sections and the total cross sections are presented. The use of linearly polarized photons gives access to the polarization observables Sigma, I-s, and I-c, the latter two characterize beam asymmetries in case of three-body final states. Delta(1232)(eta), N(1535)1/2(-) pi, and pa(0)(980) are the dominant isobars contributing to the reaction. The partial wave analysis confirms the existence of some nucleon and Delta resonances, for which so far only fair evidence was reported. A large number of decay modes of known nucleon and Delta resonances is presented. It is shown that detailed investigations of decay branching ratios may provide a key to unravelling the structure of nucleon and Delta resonances.",

keywords = "RELATIVISTIC QUARK-MODEL, STRANGE-BARYON SPECTRUM, PARTIAL-WAVE ANALYSIS, NUCLEON RESONANCES, CHIRAL DYNAMICS, BEAM ASYMMETRY, I-S, PHOTOPRODUCTION, MESON, SCATTERING",

author = "E. Gutz and V. Crede and V. Sokhoyan and {van Pee}, H. and Anisovich, {A. V.} and J.C.S. Bacelar and B. Bantes and O. Bartholomy and D. Bayadilov and R. Beck and Beloglazov, {Y. A.} and R. Castelijns and H. Dutz and D. Elsner and R. Ewald and F. Frommberger and M. Fuchs and Ch. Funke and R. Gregor and Gridnev, {A. B.} and W. Hillert and Ph. Hoffmeister and I. Horn and I. Jaegle and J. Junkersfeld and H. Kalinowsky and S. Kammer and V. Kleber and Frank Klein and Friedrich Klein and E. Klempt and M. Kotulla and B. Krusche and M. Lang and Herbert L{\"o}hner and Lopatin, {I. V.} and S. Lugert and T. Mertens and Messchendorp, {J. G.} and V. Metag and M. Nanova and Nikonov, {V. A.} and D. Novinsky and R. Novotny and M. Ostrick and L. Pant and M. Pfeiffer and D. Piontek and A. Roy and S. Shende and {CBELSA-TAPS Collaboration}",

note = "Library comment: authors and affiliations checked. ",

year = "2014",

month = apr,

day = "17",

doi = "10.1140/epja/i2014-14074-1",

language = "English",

volume = "50",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "4",

}

Gutz, E, Crede, V, Sokhoyan, V, van Pee, H, Anisovich, AV, Bacelar, JCS, Bantes, B, Bartholomy, O, Bayadilov, D, Beck, R, Beloglazov, YA, Castelijns, R, Dutz, H, Elsner, D, Ewald, R, Frommberger, F, Fuchs, M, Funke, C, Gregor, R, Gridnev, AB, Hillert, W, Hoffmeister, P, Horn, I, Jaegle, I, Junkersfeld, J, Kalinowsky, H, Kammer, S, Kleber, V, Klein, F, Klein, F, Klempt, E, Kotulla, M, Krusche, B, Lang, M, Löhner, H, Lopatin, IV, Lugert, S, Mertens, T, Messchendorp, JG, Metag, V, Nanova, M, Nikonov, VA, Novinsky, D, Novotny, R, Ostrick, M, Pant, L, Pfeiffer, M, Piontek, D, Roy, A, Shende, S & CBELSA-TAPS Collaboration 2014, 'High statistics study of the reaction gamma p -> p pi(0)eta', European Physical Journal A, vol. 50, no. 4, 74. https://doi.org/10.1140/epja/i2014-14074-1

TY - JOUR

T1 - High statistics study of the reaction gamma p -> p pi(0)eta

AU - Gutz, E.

AU - Crede, V.

AU - Sokhoyan, V.

AU - van Pee, H.

AU - Anisovich, A. V.

AU - Bacelar, J.C.S.

AU - Bantes, B.

AU - Bartholomy, O.

AU - Bayadilov, D.

AU - Beck, R.

AU - Beloglazov, Y. A.

AU - Castelijns, R.

AU - Dutz, H.

AU - Elsner, D.

AU - Ewald, R.

AU - Frommberger, F.

AU - Fuchs, M.

AU - Funke, Ch.

AU - Gregor, R.

AU - Gridnev, A. B.

AU - Hillert, W.

AU - Hoffmeister, Ph.

AU - Horn, I.

AU - Jaegle, I.

AU - Junkersfeld, J.

AU - Kalinowsky, H.

AU - Kammer, S.

AU - Kleber, V.

AU - Klein, Frank

AU - Klein, Friedrich

AU - Klempt, E.

AU - Kotulla, M.

AU - Krusche, B.

AU - Lang, M.

AU - Löhner, Herbert

AU - Lopatin, I. V.

AU - Lugert, S.

AU - Mertens, T.

AU - Messchendorp, J. G.

AU - Metag, V.

AU - Nanova, M.

AU - Nikonov, V. A.

AU - Novinsky, D.

AU - Novotny, R.

AU - Ostrick, M.

AU - Pant, L.

AU - Pfeiffer, M.

AU - Piontek, D.

AU - Roy, A.

AU - Shende, S.

AU - CBELSA-TAPS Collaboration

N1 - Library comment: authors and affiliations checked.

PY - 2014/4/17

Y1 - 2014/4/17

N2 - Photoproduction off protons of the p pi(0)eta three-body final state was studied with the Crystal Barrel/TAPS detector, at the electron stretcher accelerator ELSA in Bonn, for incident energies from the pi(0)eta production threshold up to 2.5 GeV. Differential cross sections and the total cross sections are presented. The use of linearly polarized photons gives access to the polarization observables Sigma, I-s, and I-c, the latter two characterize beam asymmetries in case of three-body final states. Delta(1232)(eta), N(1535)1/2(-) pi, and pa(0)(980) are the dominant isobars contributing to the reaction. The partial wave analysis confirms the existence of some nucleon and Delta resonances, for which so far only fair evidence was reported. A large number of decay modes of known nucleon and Delta resonances is presented. It is shown that detailed investigations of decay branching ratios may provide a key to unravelling the structure of nucleon and Delta resonances.

AB - Photoproduction off protons of the p pi(0)eta three-body final state was studied with the Crystal Barrel/TAPS detector, at the electron stretcher accelerator ELSA in Bonn, for incident energies from the pi(0)eta production threshold up to 2.5 GeV. Differential cross sections and the total cross sections are presented. The use of linearly polarized photons gives access to the polarization observables Sigma, I-s, and I-c, the latter two characterize beam asymmetries in case of three-body final states. Delta(1232)(eta), N(1535)1/2(-) pi, and pa(0)(980) are the dominant isobars contributing to the reaction. The partial wave analysis confirms the existence of some nucleon and Delta resonances, for which so far only fair evidence was reported. A large number of decay modes of known nucleon and Delta resonances is presented. It is shown that detailed investigations of decay branching ratios may provide a key to unravelling the structure of nucleon and Delta resonances.

KW - RELATIVISTIC QUARK-MODEL

KW - STRANGE-BARYON SPECTRUM

KW - PARTIAL-WAVE ANALYSIS

KW - NUCLEON RESONANCES

KW - CHIRAL DYNAMICS

KW - BEAM ASYMMETRY

KW - I-S

KW - PHOTOPRODUCTION

KW - MESON

KW - SCATTERING

U2 - 10.1140/epja/i2014-14074-1

DO - 10.1140/epja/i2014-14074-1

M3 - Article

SN - 1434-6001

VL - 50

JO - European Physical Journal A

JF - European Physical Journal A

IS - 4

M1 - 74

ER -

High statistics study of the reaction gamma p -> p pi(0)eta

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Keywords

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