High-statistics study of the reaction gamma p -> p 2 pi(0)

V. Sokhoyan; E. Gutz; V. Crede; 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; H. Löhner; I. V. Lopatin; S. Lugert; T. Mertens; J. G. Messchendorp; V. Metag; B. Metsch; M. Nanova; V. A. Nikonov; D. Novinsky; R. Novotny; M. Ostrick; L. Pant; M. Pfeiffer; D. Piontek; S. Shende; CBELSA-TAPS Collaboration

doi:10.1140/epja/i2015-15095-x

High-statistics study of the reaction gamma p -> p 2 pi(0)

V. Sokhoyan^*, E. Gutz, V. Crede, 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, H. Löhner, I. V. Lopatin, S. Lugert, T. Mertens, J. G. Messchendorp, V. Metag, B. Metsch, M. Nanova, V. A. Nikonov, D. Novinsky, R. Novotny, M. Ostrick, L. Pant, M. Pfeiffer, D. Piontek, S. Shende, CBELSA-TAPS Collaboration

^*Corresponding author for this work

Research unit Nuclear & Hadron Physics

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

31 Citations (Scopus)

Abstract

The photoproduction of 2 pi(0) mesons off protons was studied with the Crystal Barrel/TAPS experiment at the electron accelerator ELSA. in Bonn. The energy of photons produced.in a radiator was tagged in the energy range from 600 MeV to 2.5 GeV. Differential and total cross sections and p pi(0)pi(0) Dalitz plots are presented. Part of the data was taken with a diamond radiator producing linearly polarized photons, and beam asymmetries were derived. Properties of nucleon and Delta resonances contributing to the p pi(0)7r final state were determined within the Bonn-Gatchina (BnGa) partial-wave analysis. The data presented here allow us to determine branching ratios of nucleon and Delta resonances for their decays into p pi(0)pi(0) via several intermediate states. Most prominent are decays proceeding via Delta(1232)pi, N(1440)1/2(+)pi, N(1520)3/2(-pi), N(1680)5/2(+)pi, but also p f (500), pf(0) (980), and pf(o)(1270) contribute to the reaction.

Original language	English
Article number	95
Number of pages	29
Journal	European Physical Journal A
Volume	51
Issue number	8
DOIs	https://doi.org/10.1140/epja/i2015-15095-x
Publication status	Published - 6-Aug-2015

Keywords

DOUBLE-PION-PHOTOPRODUCTION
DOUBLE PI(0) PHOTOPRODUCTION
RELATIVIZED QUARK-MODEL
PARTIAL-WAVE ANALYSIS
BARYON RESONANCES
BUBBLE-CHAMBER
HIGH-ENERGY
PROTON
THRESHOLD
REGION

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High-statistics study of the reaction gamma p -> p 2 pi(0)
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Sokhoyan, V., Gutz, E., Crede, 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 (2015). High-statistics study of the reaction gamma p -> p 2 pi(0). European Physical Journal A, 51(8), [95]. https://doi.org/10.1140/epja/i2015-15095-x

Sokhoyan, V. ; Gutz, E. ; Crede, 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, Ch. ; Gregor, R. ; Gridnev, A. B. ; Hillert, W. ; Hoffmeister, Ph. ; Horn, I. ; Jaegle, I. ; Junkersfeld, J. ; Kalinowsky, H. ; Kammer, S. ; Kleber, V. ; Klein, Frank ; Klein, Friedrich ; Klempt, E. ; Kotulla, M. ; Krusche, B. ; Lang, M. ; Löhner, H. ; Lopatin, I. V. ; Lugert, S. ; Mertens, T. ; Messchendorp, J. G. ; Metag, V. ; Metsch, B. ; Nanova, M. ; Nikonov, V. A. ; Novinsky, D. ; Novotny, R. ; Ostrick, M. ; Pant, L. ; Pfeiffer, M. ; Piontek, D. ; Shende, S. ; CBELSA-TAPS Collaboration. / High-statistics study of the reaction gamma p -> p 2 pi(0). In: European Physical Journal A. 2015 ; Vol. 51, No. 8.

@article{14f799b2b3944e5287a0b2277de15c2f,

title = "High-statistics study of the reaction gamma p -> p 2 pi(0)",

abstract = "The photoproduction of 2 pi(0) mesons off protons was studied with the Crystal Barrel/TAPS experiment at the electron accelerator ELSA. in Bonn. The energy of photons produced.in a radiator was tagged in the energy range from 600 MeV to 2.5 GeV. Differential and total cross sections and p pi(0)pi(0) Dalitz plots are presented. Part of the data was taken with a diamond radiator producing linearly polarized photons, and beam asymmetries were derived. Properties of nucleon and Delta resonances contributing to the p pi(0)7r final state were determined within the Bonn-Gatchina (BnGa) partial-wave analysis. The data presented here allow us to determine branching ratios of nucleon and Delta resonances for their decays into p pi(0)pi(0) via several intermediate states. Most prominent are decays proceeding via Delta(1232)pi, N(1440)1/2(+)pi, N(1520)3/2(-pi), N(1680)5/2(+)pi, but also p f (500), pf(0) (980), and pf(o)(1270) contribute to the reaction.",

keywords = "DOUBLE-PION-PHOTOPRODUCTION, DOUBLE PI(0) PHOTOPRODUCTION, RELATIVIZED QUARK-MODEL, PARTIAL-WAVE ANALYSIS, BARYON RESONANCES, BUBBLE-CHAMBER, HIGH-ENERGY, PROTON, THRESHOLD, REGION",

author = "V. Sokhoyan and E. Gutz and V. Crede and {van Pee}, H. and Anisovich, {A. V.} and Bacelar, {J. C. S.} 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 H. L{\"o}hner and Lopatin, {I. V.} and S. Lugert and T. Mertens and Messchendorp, {J. G.} and V. Metag and B. Metsch 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 S. Shende and {CBELSA-TAPS Collaboration}",

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

year = "2015",

month = aug,

day = "6",

doi = "10.1140/epja/i2015-15095-x",

language = "English",

volume = "51",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "SPRINGER",

number = "8",

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Sokhoyan, V, Gutz, E, Crede, 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, Metsch, B, Nanova, M, Nikonov, VA, Novinsky, D, Novotny, R, Ostrick, M, Pant, L, Pfeiffer, M, Piontek, D, Shende, S & CBELSA-TAPS Collaboration 2015, 'High-statistics study of the reaction gamma p -> p 2 pi(0)', European Physical Journal A, vol. 51, no. 8, 95. https://doi.org/10.1140/epja/i2015-15095-x

High-statistics study of the reaction gamma p -> p 2 pi(0). / Sokhoyan, V.; Gutz, E.; Crede, 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, Ch.; Gregor, R.; Gridnev, A. B.; Hillert, W.; Hoffmeister, Ph.; Horn, I.; Jaegle, I.; Junkersfeld, J.; Kalinowsky, H.; Kammer, S.; Kleber, V.; Klein, Frank; Klein, Friedrich; Klempt, E.; Kotulla, M.; Krusche, B.; Lang, M.; Löhner, H.; Lopatin, I. V.; Lugert, S.; Mertens, T.; Messchendorp, J. G.; Metag, V.; Metsch, B.; Nanova, M.; Nikonov, V. A.; Novinsky, D.; Novotny, R.; Ostrick, M.; Pant, L.; Pfeiffer, M.; Piontek, D.; Shende, S.; CBELSA-TAPS Collaboration.

In: European Physical Journal A, Vol. 51, No. 8, 95, 06.08.2015.

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

TY - JOUR

T1 - High-statistics study of the reaction gamma p -> p 2 pi(0)

AU - Sokhoyan, V.

AU - Gutz, E.

AU - Crede, 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, H.

AU - Lopatin, I. V.

AU - Lugert, S.

AU - Mertens, T.

AU - Messchendorp, J. G.

AU - Metag, V.

AU - Metsch, B.

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 - Shende, S.

AU - CBELSA-TAPS Collaboration

N1 - Library comment: authors and affiliations checked.

PY - 2015/8/6

Y1 - 2015/8/6

N2 - The photoproduction of 2 pi(0) mesons off protons was studied with the Crystal Barrel/TAPS experiment at the electron accelerator ELSA. in Bonn. The energy of photons produced.in a radiator was tagged in the energy range from 600 MeV to 2.5 GeV. Differential and total cross sections and p pi(0)pi(0) Dalitz plots are presented. Part of the data was taken with a diamond radiator producing linearly polarized photons, and beam asymmetries were derived. Properties of nucleon and Delta resonances contributing to the p pi(0)7r final state were determined within the Bonn-Gatchina (BnGa) partial-wave analysis. The data presented here allow us to determine branching ratios of nucleon and Delta resonances for their decays into p pi(0)pi(0) via several intermediate states. Most prominent are decays proceeding via Delta(1232)pi, N(1440)1/2(+)pi, N(1520)3/2(-pi), N(1680)5/2(+)pi, but also p f (500), pf(0) (980), and pf(o)(1270) contribute to the reaction.

AB - The photoproduction of 2 pi(0) mesons off protons was studied with the Crystal Barrel/TAPS experiment at the electron accelerator ELSA. in Bonn. The energy of photons produced.in a radiator was tagged in the energy range from 600 MeV to 2.5 GeV. Differential and total cross sections and p pi(0)pi(0) Dalitz plots are presented. Part of the data was taken with a diamond radiator producing linearly polarized photons, and beam asymmetries were derived. Properties of nucleon and Delta resonances contributing to the p pi(0)7r final state were determined within the Bonn-Gatchina (BnGa) partial-wave analysis. The data presented here allow us to determine branching ratios of nucleon and Delta resonances for their decays into p pi(0)pi(0) via several intermediate states. Most prominent are decays proceeding via Delta(1232)pi, N(1440)1/2(+)pi, N(1520)3/2(-pi), N(1680)5/2(+)pi, but also p f (500), pf(0) (980), and pf(o)(1270) contribute to the reaction.

KW - DOUBLE-PION-PHOTOPRODUCTION

KW - DOUBLE PI(0) PHOTOPRODUCTION

KW - RELATIVIZED QUARK-MODEL

KW - PARTIAL-WAVE ANALYSIS

KW - BARYON RESONANCES

KW - BUBBLE-CHAMBER

KW - HIGH-ENERGY

KW - PROTON

KW - THRESHOLD

KW - REGION

U2 - 10.1140/epja/i2015-15095-x

DO - 10.1140/epja/i2015-15095-x

M3 - Article

VL - 51

JO - European Physical Journal A

JF - European Physical Journal A

SN - 1434-6001

IS - 8

M1 - 95

ER -