The European Physical Journal A

, Volume 38, Issue 2, pp 173–186 | Cite as

Study of the reaction γp → pπ0η

  • The CB-ELSA Collaboration
  • I. Horn
  • A. V. Anisovich
  • G. Anton
  • R. Bantes
  • O. Bartholomy
  • R. Beck
  • Y. Beloglazov
  • R. Bogendörfer
  • R. Castelijns
  • V. Credé
  • A. Ehmanns
  • J. Ernst
  • I. Fabry
  • H. Flemming
  • A. Fösel
  • M. Fuchs
  • Ch. Funke
  • R. Gothe
  • A. Gridnev
  • E. Gutz
  • S. Höffgen
  • J. Hößl
  • 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
  • V. Metag
  • V. A. Nikonov
  • D. Novinski
  • M. Ostrick
  • H. van Pee
  • A. V. Sarantsev
  • C. Schmidt
  • H. Schmieden
  • B. Schoch
  • G. Suft
  • V. Sumachev
  • T. Szczepanek
  • U. Thoma
  • D. Walther
  • Ch. Weinheimer
Regular Article - Experimental Physics

Abstract

The reaction γppπ0η has been studied with the CBELSA detector at the tagged photon beam of the Bonn electron stretcher facility. The reaction shows contributions from Δ+(1232)η , N(1535)+π0 and pa0(980) as intermediate states. A partial-wave analysis suggests that the reaction proceeds via formation of six Δ -resonances, Δ(1600)P33 , Δ(1920)P33 , Δ(1700)D33 , Δ(1940)D33 , Δ(1905)F35 , Δ(2360)D33 , and two nucleon resonances N(1880)P11 and N(2200)P13 , for which pole positions and decay branching ratios are given.

PACS

13.30.-a Decays of baryons 13.60.Le Meson production 14.20.Gk Baryon resonances with S = 0 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. Capstick, N. Isgur, Phys. Rev. D 34, 2809 (1986).Google Scholar
  2. 2.
    U. Löring, B.C. Metsch, H.R. Petry, Eur. Phys. J. A 10 395Google Scholar
  3. 3.
    L.Y. Glozman, W. Plessas, K. Varga, R.F. Wagenbrunn, Phys. Rev. D 58, 094030 (1998).Google Scholar
  4. 4.
    M. Anselmino, E. Predazzi, S. Ekelin, S. Fredriksson, D.B. Lichtenberg, Rev. Mod. Phys. 65, 1199 (1993).Google Scholar
  5. 5.
    M. Kirchbach, M. Moshinsky, Yu.F. Smirnov, Phys. Rev. D 64, 114005 (2001).Google Scholar
  6. 6.
    E. Santopinto, Phys. Rev. C 72, 022201 (2005).Google Scholar
  7. 7.
    J.M. Maldacena, Adv. Theor. Math. Phys. 2, 231 (1998) (Int. J. Theor. Phys. 38, 1113 (1999)).Google Scholar
  8. 8.
    E. Witten, Adv. Theor. Math. Phys. 2, 253 (1998).Google Scholar
  9. 9.
    I.R. Klebanov, arXiv:hep-th/0009139.Google Scholar
  10. 10.
    A. Karch, E. Katz, D.T. Son, M.A. Stephanov, Phys. Rev. D 74, 015005 (2006).Google Scholar
  11. 11.
    S.J. Brodsky, Eur. Phys. J. A 31, 638 (2007).Google Scholar
  12. 12.
    H. Forkel, M. Beyer, T. Frederico, JHEP 0707, 077 (2007).Google Scholar
  13. 13.
    H. Forkel, M. Beyer, T. Frederico, Int. J. Mod. Phys. E 16, 2794 (2007).Google Scholar
  14. 14.
    S. Basak, Phys. Rev. D 76, 074504 (2007).Google Scholar
  15. 15.
    Particle Data Group (C. Amsler), Phys. Lett. B 667, 1 (2008).Google Scholar
  16. 16.
    R.A. Arndt, W.J. Briscoe, I.I. Strakovsky, R.L. Workman, Phys. Rev. C 74, 045205 (2006).Google Scholar
  17. 17.
    B. Metsch, private communication, 2007.Google Scholar
  18. 18.
    A.V. Anisovich, A. Sarantsev, O. Bartholomy, E. Klempt, V.A. Nikonov, U. Thoma, Eur. Phys. J. A 25, 427 (2005).Google Scholar
  19. 19.
    A.V. Sarantsev, V.A. Nikonov, A.V. Anisovich, E. Klempt, U. Thoma, Eur. Phys. J. A 25, 441 (2005).Google Scholar
  20. 20.
    B.M.K. Nefkens, $\pi N$ Newslett. 13, 270 (1997).Google Scholar
  21. 21.
    M. Döring, E. Oset, D. Strottman, Phys. Rev. C 73, 045209 (2006).Google Scholar
  22. 22.
    J. Ajaka, Phys. Rev. Lett. 100, 052003 (2008).Google Scholar
  23. 23.
    M. Döring, E. Oset, D. Strottman, Phys. Lett. B 639, 59 (2006).Google Scholar
  24. 24.
    W. Hillert, Eur. Phys. J. A 28, S01, 139 (2006).Google Scholar
  25. 25.
    E. Aker, Nucl. Instrum. Methods A 321, 69 (1992).Google Scholar
  26. 26.
    U. Thoma, Phys. Lett. B 659, 87 (2008).Google Scholar
  27. 27.
    H. van Pee, Eur. Phys. J. A 31, 61 (2007).Google Scholar
  28. 28.
    G. Suft, Nucl. Instrum. Methods A 538, 416 (2005).Google Scholar
  29. 29.
    A.V. Anisovich, E. Klempt, A.V. Sarantsev, U. Thoma, Eur. Phys. J. A 24, 111 (2005).Google Scholar
  30. 30.
    A.V. Anisovich, A.V. Sarantsev, Eur. Phys. J. A 30, 427 (2006).Google Scholar
  31. 31.
    A.V. Anisovich, V.V. Anisovich, E. Klempt, V.A. Nikonov, A.V. Sarantsev, Eur. Phys. J. A 34, 129 (2007).Google Scholar
  32. 32.
    R. Bradford, Phys. Rev. C 73, 035202 (2006).Google Scholar
  33. 33.
    J.W.C. McNabb, Phys. Rev. C 69, 042201 (2004).Google Scholar
  34. 34.
    A. Lleres, Eur. Phys. J. A 31, 79 (2007).Google Scholar
  35. 35.
    R.G.T. Zegers, Phys. Rev. Lett. 91, 092001 (2003).Google Scholar
  36. 36.
    R. Bradford, Phys. Rev. C 75, 035205 (2007).Google Scholar
  37. 37.
    A. Lleres, arXiv:0807.3839 [nucl-ex].Google Scholar
  38. 38.
    R. Lawall, Eur. Phys. J. A 24, 275 (2005).Google Scholar
  39. 39.
    R. Castelijns, Eur. Phys. J. A 35, 39 (2008).Google Scholar
  40. 40.
    O. Bartholomy, Phys. Rev. Lett. 94, 012003 (2005).Google Scholar
  41. 41.
    O. Bartalini, Eur. Phys. J. A 26, 399 (2005).Google Scholar
  42. 42.
    A.A. Belyaev, Nucl. Phys. B 213, 201 (1983).Google Scholar
  43. 43.
    R.A. Arndt, http://gwdac.phys.gwu.eduGoogle Scholar
  44. 44.
    K.H. Althoff, Z. Phys. C 18, 199 (1983)Google Scholar
  45. 45.
    V. Crede, Phys. Rev. Lett. 94, 012004 (2005).Google Scholar
  46. 46.
    B. Krusche, Phys. Rev. Lett. 74, 3736 (1995).Google Scholar
  47. 47.
    J. Ajaka, Phys. Rev. Lett. 81, 1797 (1998).Google Scholar
  48. 48.
    O. Bartalini, Measurement of $\eta$ photoproduction on the proton from threshold to $1500\un{MeV}$, arXiv:0707.1385 [nucl-ex].Google Scholar
  49. 49.
    E. Gutz, Eur. Phys. J. A 35, 291 (2008).Google Scholar
  50. 50.
    S. Prakhov, Phys. Rev. C 69, 045202 (2004).Google Scholar
  51. 51.
    A.V. Sarantsev, Phys. Lett. B 659, 94 (2008).Google Scholar
  52. 52.
    A.V. Anisovich, V. Kleber, E. Klempt, V.A. Nikonov, A.V. Sarantsev, U. Thoma, Eur. Phys. J. A 34, 243 (2007).Google Scholar
  53. 53.
    T. Nakabayashi, Phys. Rev. C 74, 035202 (2006).Google Scholar
  54. 54.
    G. Höhler, F. Kaiser, R. Koch, E. Pietarinen, Handbook Of Pion Nucleon Scattering (Fachinformation Zentrum, Karlsruhe, 1979) p. 440 (Physics Data, No. 12-1 (1979)).Google Scholar
  55. 55.
    R.E. Cutkosky, C.P. Forsyth, J.B. Babcock, R.L. Kelly, R.E. Hendrick, Pion-Nucleon Partial Wave Analysis, in Baryon 1980, Proceedings of the 4th International Conference on Baryon Resonances, Toronto, Canada, July 14-16, 1980 (Toronto University, Physics Department, 1980).Google Scholar
  56. 56.
    D.M. Chew, New $\Delta$ Parameters From A Simpler, Cheaper And More Reliable $\pi N$ Partial Wave Analysis, in Baryon 1980, Proceedings of the 4th International Conference on Baryon Resonances, Toronto, Canada, July 14-16, 1980 (Toronto University, Physics Department, 1980).Google Scholar
  57. 57.
    D.M. Manley, E.M. Saleski, Phys. Rev. D 45, 4002 (1992).Google Scholar
  58. 58.
    I. Horn, Evidence for a parity doublet $\Delta(1920)P_{33}$ and $\Delta(1940)D_{33}$ from $\gamma p \rightarrow p\pi^0\eta$, to be published in Phys. Rev. Lett.Google Scholar
  59. 59.
    J. Vandermeulen, Z. Phys. C 37, 563 (1988).Google Scholar
  60. 60.
    E. Klempt, C. Batty, J.M. Richard, Phys. Rep. 413, 197 (2005).Google Scholar
  61. 61.
    E. Klempt, $\Delta$-resonances: Quark models, chiral symmetry and AdS/QCD, this issue.Google Scholar
  62. 62.
    L.Y. Glozman, Phys. Lett. B 475, 329 (2000).Google Scholar
  63. 63.
    T.D. Cohen, L.Y. Glozman, Phys. Rev. D 65, 016006 (2002).Google Scholar
  64. 64.
    R.L. Jaffe, D. Pirjol, A. Scardicchio, Phys. Rep. 435, 157 (2006).Google Scholar
  65. 65.
    See, e.g., L.Y. Glozman, Phys. Rev. Lett. 99, 191602 (2007) and references therein.Google Scholar
  66. 66.
    E. Klempt, Phys. Lett. B 559, 144 (2003).Google Scholar
  67. 67.
    E. Klempt, A. Zaitsev, Phys. Rep. 454, 1 (2007).Google Scholar
  68. 68.
    M. Shifman, A. Vainshtein, Phys. Rev. D 77, 034002 (2008).Google Scholar

Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • The CB-ELSA Collaboration
  • I. Horn
    • 1
  • A. V. Anisovich
    • 1
    • 2
  • G. Anton
    • 3
  • R. Bantes
    • 4
  • O. Bartholomy
    • 1
  • R. Beck
    • 1
  • Y. Beloglazov
    • 2
  • R. Bogendörfer
    • 3
  • R. Castelijns
    • 5
  • V. Credé
    • 6
  • A. Ehmanns
    • 1
  • J. Ernst
    • 1
  • I. Fabry
    • 1
  • H. Flemming
    • 7
  • A. Fösel
    • 3
  • M. Fuchs
    • 1
  • Ch. Funke
    • 1
  • R. Gothe
    • 4
  • A. Gridnev
    • 2
  • E. Gutz
    • 1
  • S. Höffgen
    • 4
  • J. Hößl
    • 3
  • J. Junkersfeld
    • 1
  • H. Kalinowsky
    • 1
  • F. Klein
    • 4
  • E. Klempt
    • 1
  • H. Koch
    • 7
  • M. Konrad
    • 4
  • B. Kopf
    • 7
  • B. Krusche
    • 8
  • J. Langheinrich
    • 4
  • H. Löhner
    • 5
  • I. Lopatin
    • 2
  • J. Lotz
    • 1
  • H. Matthäy
    • 7
  • D. Menze
    • 4
  • J. Messchendorp
    • 9
  • V. Metag
    • 9
  • V. A. Nikonov
    • 1
    • 2
  • D. Novinski
    • 2
  • M. Ostrick
    • 4
  • H. van Pee
    • 1
  • A. V. Sarantsev
    • 1
    • 2
  • C. Schmidt
    • 1
  • H. Schmieden
    • 4
  • B. Schoch
    • 4
  • G. Suft
    • 3
  • V. Sumachev
    • 2
  • T. Szczepanek
    • 1
  • U. Thoma
    • 1
  • D. Walther
    • 1
  • Ch. Weinheimer
    • 1
  1. 1.Helmholtz-Institut für Strahlen- und KernphysikUniversität BonnBonnGermany
  2. 2.Petersburg Nuclear Physics InstituteGatchinaRussia
  3. 3.Physikalisches InstitutUniversität ErlangenErlangenGermany
  4. 4.Physikalisches InstitutUniversität BonnBonnGermany
  5. 5.Kernfysisch Versneller InstituutGroningenThe Netherlands
  6. 6.Department of PhysicsFlorida State UniversityTallahasseeUSA
  7. 7.Institut für Experimentalphysik IUniversität BochumBochumGermany
  8. 8.Institut für PhysikUniversität BaselBaselSwitzerland
  9. 9.II. Physikalisches InstitutUniversität GießenGießenGermany

Personalised recommendations