Evidence of phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays in SND experiment at VEPP-2M
M.N.Achasov, A.V.Berdyugin, A.V.Bozhenok, A.D.Bukin, D.A.Bukin,, S.V.Burdin, T.V.Dimova, V.P.Druzhinin, M.S.Dubrovin, I.A.Gaponenko,, V.B.Golubev, V.N.Ivanchenko, I.A.Koop, A.A.Korol, S.V.Koshuba,, E.V.Pakhtusova, A.A.Salnikov, S.I.Serednyakov, V.V.Shary, Yu.M.Shatunov,
TL;DR
This paper reports preliminary measurements of rare phi meson radiative decays into pi0 pi0 gamma and eta pi0 gamma final states, providing new experimental data on these processes at VEPP-2M.
Contribution
First measurements of branching ratios for phi --> pi0 pi0 gamma and phi --> eta pi0 gamma decays in the SND experiment at VEPP-2M.
Findings
Branching ratio for phi --> pi0 pi0 gamma: (1.1 +- 0.2) x 10^-4
Branching ratio for phi --> eta pi0 gamma: (1.3 +- 0.5) x 10^-4
Evidence supporting the occurrence of these rare decay modes
Abstract
Preliminary results on the study of e+e- --> phi(1020) --> pi0 pi0 gamma, eta pi0 gamma processes from SND experiment at VEPP-2M collider in Novosibirsk are presented. Branching ratios of rare radiative phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays are measured: B(phi --> pi0 pi0 gamma ) = (1.1 +- 0.2) * 10^-4 (invariant mass (pi0 pi0) < 800 MeV), B(phi --> eta pi0 gamma ) = (1.3 +- 0.5) * 10^-4.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.