A partial wave analysis of the reaction γγ → π+π-π0

H. Albrecht; T. Hamacher; R. P. Hofmann; T. Kirchhoff; R. Mankel; A. Nau; S. Nowak; D. Reßing; H. Schröder; H. D. Schulz; M. Walter; R. Wurth; C. Hast; H. Kapitza; H. Kolanoski; A. Kosche; A. Lange; A. Lindner; M. Schieber; T. Siegmund; H. Thurn; D. Töpfer; D. Wegener; C. Frankl; J. Graf; M. Schmidtler; M. Schramm; K. R. Schubert; R. Schwierz; B. Spaan; R. Waldi; K. Reim; H. Wegener; R. Eckmann; H. Kuipers; O. Mai; R. Mundt; T. Oest; R. Reiner; W. Schmidt-Parzefall; J. Stiewe; S. Werner; K. Ehret; W. Hofmann; A. Hüpper; K. T. Knöpfle; J. Spengler; P. Krieger; D. B. MacFarlane; J. D. Prentice; P. R.B. Saull; K. Tzamariudaki; R. G. Van De Water; T. S. Yoon; M. Schneider; S. Weseler; M. Bračko; G. Kernel; P. Križan; E. Križnič; G. Medin; T. Podobnik; T. Živko; V. Balagura; S. Barsuk; I. Belyaev; R. Chistov; M. Danilov; V. Eiges; L. Gershtein; Yu Gershtein; A. Golutvin; O. Igonkina; I. Korolko; G. Kostina; D. Litvintsev; P. Pakhlov; S. Semenov; A. Snizhko; I. Tichomirov; Yu Zaitsev

doi:10.1007/s002880050409

A partial wave analysis of the reaction γγ → π⁺π^-π⁰

H. Albrecht
, T. Hamacher
, R. P. Hofmann
, T. Kirchhoff
, R. Mankel
, A. Nau
, S. Nowak
, D. Reßing
, H. Schröder
, H. D. Schulz
, M. Walter
, R. Wurth
, C. Hast
, H. Kapitza
, H. Kolanoski
, A. Kosche
, A. Lange
, A. Lindner
, M. Schieber
, T. Siegmund

H. Thurn, D. Töpfer, D. Wegener, C. Frankl, J. Graf, M. Schmidtler, M. Schramm, K. R. Schubert, R. Schwierz, B. Spaan, R. Waldi, K. Reim, H. Wegener, R. Eckmann, H. Kuipers, O. Mai, R. Mundt, T. Oest, R. Reiner, W. Schmidt-Parzefall, J. Stiewe, S. Werner, K. Ehret, W. Hofmann, A. Hüpper, K. T. Knöpfle, J. Spengler, P. Krieger, D. B. MacFarlane, J. D. Prentice, P. R.B. Saull, K. Tzamariudaki, R. G. Van De Water, T. S. Yoon, M. Schneider, S. Weseler, M. Bračko, G. Kernel, P. Križan, E. Križnič, G. Medin, T. Podobnik, T. Živko, V. Balagura, S. Barsuk, I. Belyaev, R. Chistov, M. Danilov, V. Eiges, L. Gershtein, Yu Gershtein, A. Golutvin, O. Igonkina, I. Korolko, G. Kostina, D. Litvintsev, P. Pakhlov, S. Semenov, A. Snizhko, I. Tichomirov, Yu Zaitsev

c/o DESY
Institut für Physik
University of Dortmund
Humboldt-Universität zu Berlin
Institut für Kern- und Teilchenphysik
Technical University Dresden
Physikalisches Institut
Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
II. Institut für Experimentalphysik
Universität Hamburg
Institut für Hochenergiephysik
University of Heidelberg
Max-Planck-Institut für Kernphysik
Institute of Particle Physics
University of Toronto
McGill University
Institut für Experimentelle Kernphysik
Universität Karlsruhe/Forschungszentrum Karlsruhe
Institut J. Stefan and Oddelek za fiziko
University of Ljubljana
University of Montenegro
Institute for Theoretical and Experimental Physics
Institut für Physik

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

19 Citations (Scopus)

Abstract

The two-photon reaction γγ → π⁺π^-π⁰ was investigated by the ARGUS collaboration. The reaction is dominated by the formation of the a₂(1320) meson. A value of Γ_γγ = (0.96 ± 0.03 ± 0.13) keV was obtained for its radiative width, in good agreement with the world average. The fraction of γγ-helicity 0 in the a₂ two-photon width was found to be equal to (6.7 ± 2.2)%. It allows a discrimination among models that describe the dynamics in the two-photon production of tensor mesons. An upper limit of Γ_γγ·Br(ρ^±π ^∓) < 0.54 keV (90% c.l.) was obtained for the resonance π(1300). The partial wave analysis revealed almost a complete absence of the wave with spin and parity J^P = 2^-. We also observe no significant enhancement in the π⁺π^-π⁰ invariant mass spectrum that could be attributed to the two-photon production of the π₂(1670). The obtained upper limit Γ_γγ(π₂(1670)) < 0.19 keV at the 90% confidence level is in contradiction with two previous observations.

Original language	English
Pages (from-to)	469-477
Number of pages	9
Journal	Zeitschrift fur Physik C-Particles and Fields
Volume	74
Issue number	3
DOIs	https://doi.org/10.1007/s002880050409
Publication status	Published - 1 Jan 1997
Externally published	Yes

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10.1007/s002880050409

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Albrecht, H., Hamacher, T., Hofmann, R. P., Kirchhoff, T., Mankel, R., Nau, A., Nowak, S., Reßing, D., Schröder, H., Schulz, H. D., Walter, M., Wurth, R., Hast, C., Kapitza, H., Kolanoski, H., Kosche, A., Lange, A., Lindner, A., Schieber, M., ... Zaitsev, Y. (1997). A partial wave analysis of the reaction γγ → π⁺π^-π⁰. Zeitschrift fur Physik C-Particles and Fields, 74(3), 469-477. https://doi.org/10.1007/s002880050409

@article{0a3e78d1b95e476a88c579598f8fcce7,

title = "A partial wave analysis of the reaction γγ → π+π-π0",

abstract = "The two-photon reaction γγ → π+π-π0 was investigated by the ARGUS collaboration. The reaction is dominated by the formation of the a2(1320) meson. A value of Γγγ = (0.96 ± 0.03 ± 0.13) keV was obtained for its radiative width, in good agreement with the world average. The fraction of γγ-helicity 0 in the a2 two-photon width was found to be equal to (6.7 ± 2.2)\%. It allows a discrimination among models that describe the dynamics in the two-photon production of tensor mesons. An upper limit of Γγγ·Br(ρ±π ∓) < 0.54 keV (90\% c.l.) was obtained for the resonance π(1300). The partial wave analysis revealed almost a complete absence of the wave with spin and parity JP = 2-. We also observe no significant enhancement in the π+π-π0 invariant mass spectrum that could be attributed to the two-photon production of the π2(1670). The obtained upper limit Γγγ(π2(1670)) < 0.19 keV at the 90\% confidence level is in contradiction with two previous observations.",

author = "H. Albrecht and T. Hamacher and Hofmann, \{R. P.\} and T. Kirchhoff and R. Mankel and A. Nau and S. Nowak and D. Re{\ss}ing and H. Schr{\"o}der and Schulz, \{H. D.\} and M. Walter and R. Wurth and C. Hast and H. Kapitza and H. Kolanoski and A. Kosche and A. Lange and A. Lindner and M. Schieber and T. Siegmund and H. Thurn and D. T{\"o}pfer and D. Wegener and C. Frankl and J. Graf and M. Schmidtler and M. Schramm and Schubert, \{K. R.\} and R. Schwierz and B. Spaan and R. Waldi and K. Reim and H. Wegener and R. Eckmann and H. Kuipers and O. Mai and R. Mundt and T. Oest and R. Reiner and W. Schmidt-Parzefall and J. Stiewe and S. Werner and K. Ehret and W. Hofmann and A. H{\"u}pper and Kn{\"o}pfle, \{K. T.\} and J. Spengler and P. Krieger and MacFarlane, \{D. B.\} and Prentice, \{J. D.\} and Saull, \{P. R.B.\} and K. Tzamariudaki and \{Van De Water\}, \{R. G.\} and Yoon, \{T. S.\} and M. Schneider and S. Weseler and M. Bra{\v c}ko and G. Kernel and P. Kri{\v z}an and E. Kri{\v z}ni{\v c} and G. Medin and T. Podobnik and T. {\v Z}ivko and V. Balagura and S. Barsuk and I. Belyaev and R. Chistov and M. Danilov and V. Eiges and L. Gershtein and Yu Gershtein and A. Golutvin and O. Igonkina and I. Korolko and G. Kostina and D. Litvintsev and P. Pakhlov and S. Semenov and A. Snizhko and I. Tichomirov and Yu Zaitsev",

year = "1997",

month = jan,

day = "1",

doi = "10.1007/s002880050409",

language = "English",

volume = "74",

pages = "469--477",

journal = "Zeitschrift fur Physik C-Particles and Fields",

issn = "0170-9739",

publisher = "Springer Verlag",

number = "3",

}

Albrecht, H, Hamacher, T, Hofmann, RP, Kirchhoff, T, Mankel, R, Nau, A, Nowak, S, Reßing, D, Schröder, H, Schulz, HD, Walter, M, Wurth, R, Hast, C, Kapitza, H, Kolanoski, H, Kosche, A, Lange, A, Lindner, A, Schieber, M, Siegmund, T, Thurn, H, Töpfer, D, Wegener, D, Frankl, C, Graf, J, Schmidtler, M, Schramm, M, Schubert, KR, Schwierz, R, Spaan, B, Waldi, R, Reim, K, Wegener, H, Eckmann, R, Kuipers, H, Mai, O, Mundt, R, Oest, T, Reiner, R, Schmidt-Parzefall, W, Stiewe, J, Werner, S, Ehret, K, Hofmann, W, Hüpper, A, Knöpfle, KT, Spengler, J, Krieger, P, MacFarlane, DB, Prentice, JD, Saull, PRB, Tzamariudaki, K, Van De Water, RG, Yoon, TS, Schneider, M, Weseler, S, Bračko, M, Kernel, G, Križan, P, Križnič, E, Medin, G, Podobnik, T, Živko, T, Balagura, V, Barsuk, S, Belyaev, I, Chistov, R, Danilov, M, Eiges, V, Gershtein, L, Gershtein, Y, Golutvin, A, Igonkina, O, Korolko, I, Kostina, G, Litvintsev, D, Pakhlov, P, Semenov, S, Snizhko, A, Tichomirov, I & Zaitsev, Y 1997, 'A partial wave analysis of the reaction γγ → π⁺π^-π⁰', Zeitschrift fur Physik C-Particles and Fields, vol. 74, no. 3, pp. 469-477. https://doi.org/10.1007/s002880050409

TY - JOUR

T1 - A partial wave analysis of the reaction γγ → π+π-π0

AU - Albrecht, H.

AU - Hamacher, T.

AU - Hofmann, R. P.

AU - Kirchhoff, T.

AU - Mankel, R.

AU - Nau, A.

AU - Nowak, S.

AU - Reßing, D.

AU - Schröder, H.

AU - Schulz, H. D.

AU - Walter, M.

AU - Wurth, R.

AU - Hast, C.

AU - Kapitza, H.

AU - Kolanoski, H.

AU - Kosche, A.

AU - Lange, A.

AU - Lindner, A.

AU - Schieber, M.

AU - Siegmund, T.

AU - Thurn, H.

AU - Töpfer, D.

AU - Wegener, D.

AU - Frankl, C.

AU - Graf, J.

AU - Schmidtler, M.

AU - Schramm, M.

AU - Schubert, K. R.

AU - Schwierz, R.

AU - Spaan, B.

AU - Waldi, R.

AU - Reim, K.

AU - Wegener, H.

AU - Eckmann, R.

AU - Kuipers, H.

AU - Mai, O.

AU - Mundt, R.

AU - Oest, T.

AU - Reiner, R.

AU - Schmidt-Parzefall, W.

AU - Stiewe, J.

AU - Werner, S.

AU - Ehret, K.

AU - Hofmann, W.

AU - Hüpper, A.

AU - Knöpfle, K. T.

AU - Spengler, J.

AU - Krieger, P.

AU - MacFarlane, D. B.

AU - Prentice, J. D.

AU - Saull, P. R.B.

AU - Tzamariudaki, K.

AU - Van De Water, R. G.

AU - Yoon, T. S.

AU - Schneider, M.

AU - Weseler, S.

AU - Bračko, M.

AU - Kernel, G.

AU - Križan, P.

AU - Križnič, E.

AU - Medin, G.

AU - Podobnik, T.

AU - Živko, T.

AU - Balagura, V.

AU - Barsuk, S.

AU - Belyaev, I.

AU - Chistov, R.

AU - Danilov, M.

AU - Eiges, V.

AU - Gershtein, L.

AU - Gershtein, Yu

AU - Golutvin, A.

AU - Igonkina, O.

AU - Korolko, I.

AU - Kostina, G.

AU - Litvintsev, D.

AU - Pakhlov, P.

AU - Semenov, S.

AU - Snizhko, A.

AU - Tichomirov, I.

AU - Zaitsev, Yu

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The two-photon reaction γγ → π+π-π0 was investigated by the ARGUS collaboration. The reaction is dominated by the formation of the a2(1320) meson. A value of Γγγ = (0.96 ± 0.03 ± 0.13) keV was obtained for its radiative width, in good agreement with the world average. The fraction of γγ-helicity 0 in the a2 two-photon width was found to be equal to (6.7 ± 2.2)%. It allows a discrimination among models that describe the dynamics in the two-photon production of tensor mesons. An upper limit of Γγγ·Br(ρ±π ∓) < 0.54 keV (90% c.l.) was obtained for the resonance π(1300). The partial wave analysis revealed almost a complete absence of the wave with spin and parity JP = 2-. We also observe no significant enhancement in the π+π-π0 invariant mass spectrum that could be attributed to the two-photon production of the π2(1670). The obtained upper limit Γγγ(π2(1670)) < 0.19 keV at the 90% confidence level is in contradiction with two previous observations.

AB - The two-photon reaction γγ → π+π-π0 was investigated by the ARGUS collaboration. The reaction is dominated by the formation of the a2(1320) meson. A value of Γγγ = (0.96 ± 0.03 ± 0.13) keV was obtained for its radiative width, in good agreement with the world average. The fraction of γγ-helicity 0 in the a2 two-photon width was found to be equal to (6.7 ± 2.2)%. It allows a discrimination among models that describe the dynamics in the two-photon production of tensor mesons. An upper limit of Γγγ·Br(ρ±π ∓) < 0.54 keV (90% c.l.) was obtained for the resonance π(1300). The partial wave analysis revealed almost a complete absence of the wave with spin and parity JP = 2-. We also observe no significant enhancement in the π+π-π0 invariant mass spectrum that could be attributed to the two-photon production of the π2(1670). The obtained upper limit Γγγ(π2(1670)) < 0.19 keV at the 90% confidence level is in contradiction with two previous observations.

U2 - 10.1007/s002880050409

DO - 10.1007/s002880050409

M3 - Article

AN - SCOPUS:0038600478

SN - 0170-9739

VL - 74

SP - 469

EP - 477

JO - Zeitschrift fur Physik C-Particles and Fields

JF - Zeitschrift fur Physik C-Particles and Fields

IS - 3

ER -

A partial wave analysis of the reaction γγ → π+π-π0

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A partial wave analysis of the reaction γγ → π⁺π^-π⁰