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Determination of the Dalitz plot parameter \( \alpha\) for the decay \( \eta\) → 3\( \pi^{0}_{}\) with the Crystal Ball at MAMI-B

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Abstract

A precise measurement of the Dalitz plot parameter, \( \alpha\) , for the \( \eta\) → 3\( \pi^{0}_{}\) decay is presented. The experiment was performed with the Crystal Ball and TAPS large-acceptance photon detectors at the tagged photon beam facility of the MAMI-B electron accelerator in Mainz. High statistics of 1.8 · 106 \( \eta\) → 3\( \pi^{0}_{}\) events were obtained, giving the result \( \alpha\) = - 0.032±0.002stat±0.002syst .

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References

  1. D.G. Sutherland, Phys. Lett. 23, 384 (1966).

    Google Scholar 

  2. R. Baur, J. Kambor, D. Wyler, Nucl. Phys. B 460, 127 (1996).

    Google Scholar 

  3. C. Ditsche, B. Kubis, U.-G. Meißner, arXiv:0812.0344 [hep-ph], to be published in Eur. Phys. J. C.

  4. H. Osborn, D.J. Wallace, Nucl. Phys. B 20, 23 (1970).

    Google Scholar 

  5. J. Gasser, H. Leutwyler, Nucl. Phys. B 250, 539 (1985).

    Google Scholar 

  6. J. Bijnens, K. Ghorbani, JHEP 0711, 030 (2007).

  7. J. Kambor, C. Wiesendanger, D. Wyler, Nucl. Phys. B 465, 215 (1996).

    Google Scholar 

  8. A.V. Anisovich, H. Leutwyler, Phys. Lett. B 375, 335 (1996).

    Google Scholar 

  9. B. Borasoy, R. Nißler, Eur. Phys. J. A 26, 383 (2005).

    Google Scholar 

  10. Particle Data Group (C. Amsler), Phys. Lett. B 667, 1 (2008).

    Google Scholar 

  11. J. Bijnens, J. Gasser, Phys. Scr. T 99, 34 (2002).

    Google Scholar 

  12. N.N. Khuri, S.B. Treiman, Phys. Rev. 119, 1115 (1960).

    Google Scholar 

  13. Particle Data Group (S. Eidelman), Phys. Lett. B 592, 1 (2004).

    Google Scholar 

  14. W.B. Tippens, Phys. Rev. Lett. 87, 192001 (2001).

    Google Scholar 

  15. F. Ambrosino, arXiv:0707.4137 [hep-ex].

  16. C. Baglin, Nucl. Phys. B 22, 66 (1970).

    Google Scholar 

  17. D. Alde, Z. Phys. C 25, 225 (1984).

    Google Scholar 

  18. A. Abele, Phys. Lett. B 417, 193 (1998).

    Google Scholar 

  19. M.N. Achasov, JETP Lett. 73, 451 (2001).

  20. M. Bashkanov, Phys. Rev. C 76, 048201 (2007).

    Google Scholar 

  21. C. Adolph, arXiv:0811:2763 [nucl-ex].

  22. T. Capussela, Acta Phys. Slov. 56, 341 (2005).

    Google Scholar 

  23. H. Herminghaus, IEEE Trans. Nucl. Sci. 30, 3274 (1983).

    Google Scholar 

  24. Th. Walcher, Prog. Part. Nucl. Phys. 24, 189 (1990).

  25. M. Unverzagt, PhD Thesis, Rheinische Friedrich-Wilhelms-Uni\-versität Bonn, Germany, 2007.

  26. I. Anthony, J.D. Kellie, S.J. Hall, G.J. Miller, J. Ahrens, Nucl. Instrum. Methods A 301, 230 (1991).

    Google Scholar 

  27. S.J. Hall, G.J. Miller, R. Beck, P. Jennewein, Nucl. Instrum. Methods A 368, 698 (1996).

    Google Scholar 

  28. M. Oreglia, Phys. Rev. D 25, 2259 (1982).

    Google Scholar 

  29. A. Starostin, Phys. Rev. C 64, 055205 (2001).

    Google Scholar 

  30. D. Watts, Calorimetry in Particle Physics: Proceedings of the 11th International Conference, Perugia, Italy, 2004, edited by C. Cecchi, P. Lubrano, M. Pepe (World Scientific, Singapore, 2005) p. 560.

  31. R. Novotny, IEEE Trans. Nucl. Sci. 38, 379 (1991).

    Google Scholar 

  32. A.R. Gabler, Nucl. Instrum. Methods A 346, 168 (1994).

  33. P. Avery, http://www.phys.ufl.edu/$\sim$avery/fitting. html.

  34. B. Krusche, Phys. Rev. Lett. 75, 3023 (1995).

    Google Scholar 

  35. W.-T. Chiang, S.N. Yang, L. Tiator, M. Vanderhaegen, D. Drechsel, Phys. Rev. C 68, 045202 (2003).

    Google Scholar 

  36. D. Drechsel, O. Hanstein, S.S. Kamalov, L. Tiator, Nucl. Phys. A 645, 145 (1999).

    Google Scholar 

  37. D. Drechsel, S.S. Kamalov, L. Tiator, Eur. Phys. J. A 34, 69 (2007).

    Google Scholar 

  38. R.A. Arndt, Phys. Rev. C 53, 430 (1996).

    Google Scholar 

  39. J. Junkersfeld, PhD Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, Germany, 2005.

  40. R. Nißler, PhD Thesis, Rheinische Friedrich-Wilhelms-Uni\-versität Bonn, Germany, 2007.

  41. U.-G. Meißner, G. Müller, S. Steininger, Phys. Lett. B 406, 154 (1997)

    Google Scholar 

  42. U.-G. Meißner, Nucl. Phys. A 629, 72C (1998).

  43. N. Cabibbo, Phys. Rev. Lett. 93, 121801 (2004).

    Google Scholar 

  44. N. Cabibbo, G. Isidori, JHEP 0503, 021 (2005).

  45. J. Belina, Diploma Thesis, Universität Bern, Switzerland, 2006.

  46. M. Bissegger, A. Fuhrer, J. Gasser, B. Kubis, A. Rusetsky, Phys. Lett. B 659, 576 (2008).

    Google Scholar 

  47. K.-H. Kaiser, Nucl. Instrum. Methods A 593, 159 (2008).

    Google Scholar 

  48. S. Prakhov, submitted to Phys. Rev. C (2008) [arXiv:0812.1999v2 [hep-ex]].

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Correspondence to M. Unverzagt.

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Crystal Ball at MAMI, TAPS and A2 Collaborations., Unverzagt, M., Aguar-Bartolomé, P. et al. Determination of the Dalitz plot parameter \( \alpha\) for the decay \( \eta\) → 3\( \pi^{0}_{}\) with the Crystal Ball at MAMI-B. Eur. Phys. J. A 39, 169–177 (2009). https://doi.org/10.1140/epja/i2008-10710-7

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