Study of the proccess e⁺e^-→ π⁺π^-π⁰π⁰η in the c.m. energy range 1.6--2.0 GeV with the CMD-3 detector

@misc{akhmetshin2026study,
  title = {{Study of the proccess $e^+e^-\to π^+π^-π^0π^0η$ in the c.m. energy range 1.6--2.0 GeV with the CMD-3 detector}},
  author = {R. R. Akhmetshin and A. N. Amirkhanov and A. V. Anisenkova and V. M. Aulchenkoa and N. S. Bashtovoy and E. V. Bedarev and D. E. Berkaev and A. E. Bondar and A. V. Bragin and V. S. Denisov and D. A. Epifanov and L. B. Epshteyn and A. L. Erofeev and G. V. Fedotovich and A. O. Gorkovenko and A. A. Grebenuk and S. S. Gribanov and D. N. Grigoriev and F. V. Ignatov and V. L. Ivanov and A. S. Kasaev and S. V. Karpov and V. F. Kazanin and I. A. Koop and A. A. Korobov and A. N. Kozyrev and P. P. Krokovny and A. S. Kuzmin and I. B. Logashenko and P. A. Lukin and K. Yu. Mikhailov and I. V. Obraztsov and Yu. N. Pestov and E. A. Perevedentsev and V. G. Petrochenko and N. A. Petrov and A. S. Popov and Yu. A. Rogovsky and A. A. Ruban and A. E. Ryzhenenkov and A. V. Semenov and A. I. Senchenko and V. E. Shebalin and D. N. Shemyakin and B. A. Shwartz and D. B. Shwartz and E. P. Solodov and M. V. Timoshenko and V. M. Titov and A. A. Talyshev and S. S. Tolmachev and A. I. Vorobiov and I. M. Zemlyansky and D. S. Zhadan and Yu. V. Yudin},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.11556},
  eprint = {2607.11556},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.11556},
  note = {CC0},
}

TY  - UNPB
TI  - Study of the proccess e^+e^-→ π^+π^-π^0π^0η in the c.m. energy range 1.6--2.0 GeV with the CMD-3 detector
AU  - R. R. Akhmetshin
AU  - A. N. Amirkhanov
AU  - A. V. Anisenkova
AU  - V. M. Aulchenkoa
AU  - N. S. Bashtovoy
AU  - E. V. Bedarev
AU  - D. E. Berkaev
AU  - A. E. Bondar
AU  - A. V. Bragin
AU  - V. S. Denisov
AU  - D. A. Epifanov
AU  - L. B. Epshteyn
AU  - A. L. Erofeev
AU  - G. V. Fedotovich
AU  - A. O. Gorkovenko
AU  - A. A. Grebenuk
AU  - S. S. Gribanov
AU  - D. N. Grigoriev
AU  - F. V. Ignatov
AU  - V. L. Ivanov
AU  - A. S. Kasaev
AU  - S. V. Karpov
AU  - V. F. Kazanin
AU  - I. A. Koop
AU  - A. A. Korobov
AU  - A. N. Kozyrev
AU  - P. P. Krokovny
AU  - A. S. Kuzmin
AU  - I. B. Logashenko
AU  - P. A. Lukin
AU  - K. Yu. Mikhailov
AU  - I. V. Obraztsov
AU  - Yu. N. Pestov
AU  - E. A. Perevedentsev
AU  - V. G. Petrochenko
AU  - N. A. Petrov
AU  - A. S. Popov
AU  - Yu. A. Rogovsky
AU  - A. A. Ruban
AU  - A. E. Ryzhenenkov
AU  - A. V. Semenov
AU  - A. I. Senchenko
AU  - V. E. Shebalin
AU  - D. N. Shemyakin
AU  - B. A. Shwartz
AU  - D. B. Shwartz
AU  - E. P. Solodov
AU  - M. V. Timoshenko
AU  - V. M. Titov
AU  - A. A. Talyshev
AU  - S. S. Tolmachev
AU  - A. I. Vorobiov
AU  - I. M. Zemlyansky
AU  - D. S. Zhadan
AU  - Yu. V. Yudin
PY  - 2026
DA  - 2026/09/15
PB  - arXiv
DO  - 10.48550/arxiv.2607.11556
UR  - https://arxiv.org/abs/2607.11556
AB  - The cross section of the process e^+e^- → π^+π^-π^0π^0η has been measured using a data sample with the integrated luminosity of 372 pb^−1 collected with the CMD-3 detector at the VEPP-2000 e^+e^- collider. 6300±145 signal events have been selected in the center-of-mass energy range 1.6--2.0 GeV. The total systematic uncertainty of the cross section is about 10\%. The production dynamics is dominated by the ω(782)π^0η final state with a possible small contribution of the a_0(980) resonance in the π^0η combination. We also observe a presence of the ρ(770)^± resonance signal in the π^±π^0 invariant mass distribution.
ER  -