V. Obraztsov

activity

19972026

most citedStudy of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c

333 citations · 2.6k across the 81 of their papers we have counts for

collaborators

81 papers

hep-ex2026

A search for the dark photon in the OKA experiment

The OKA Collaboration, A. S. Sadovsky, A. P. Filin +35

A search for the massless dark photon in the decay $K^{+} \to π^{+} π^{0} γ$ is performed with the OKA detector exposed to 17.7 GeV/c RF separated secondary beam of the…

hep-ph2025

Does the existence of $f_{0}$ meson enlarge the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay probability?

E. K. Karkaryan, V. F. Obraztsov, M. I. Vysotsky

We estimate a possible contribution of the two-pion system $f_{0} (500)$ wide resonance to the decay probability of the super rare decay $K^{+} \to 3 π^{0} e^{+} ν$ . We vary the width of the…

hep-ph2024★ 3 cited

On the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay

E. K. Karkaryan, K. V. Kiselev, V. F. Obraztsov +2

The OKA Collaboration has obtained a new upper limit on the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay probability which is 65 times lower than the one currently listed by PDG. However it is…

hep-ex2024

The upper limit on the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay

A. V. Kulik, S. N. Filippov, E. N. Gushchin +26

A search for the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay is performed by the OKA collaboration. The search is based on $3.65 \times 1 0^{9} K^{+}$ decays. No signal is observed. The upp…

hep-ex2023

Observation of $K^{+} \to π^{+} π^{0} π^{0} γ$ decay

S. N. Filippov, E. N. Gushchin, A. A. Khudyakov +29

The $K^{+} \to π^{+} π^{0} π^{0} γ$ decay is observed by the OKA collaboration. The branching ratio is measured to be $(4.1 \pm 0.9 (s t a t) \pm 0.4 (sy s t)) \times 1 0^{- 6}$ . The branching…

hep-ex2023★ 3 cited

Searches for the light invisible axion-like particle in $K^{+} \to π^{+} π^{0} a$ decay

A. S. Sadovsky, A. P. Filin, S. A. Akimenko +31

A high statistics data sample of the $K^{+}$ decays is recorded by the OKA collaboration. A missing mass analysis is performed to search for a light invisible pseudoscalar axion-li…

A search for the dark photon in the OKA experiment

Does the existence of f0​ meson enlarge the K+→π0π0π0e+ν decay probability?

On the K+→π0π0π0e+ν decay

The upper limit on the K+→π0π0π0e+ν decay

Observation of K+→π+π0π0γ decay

Searches for the light invisible axion-like particle in K+→π+π0a decay

Does the existence of $f_{0}$ meson enlarge the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay probability?

On the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay

The upper limit on the $K^{+} \to π^{0} π^{0} π^{0} e^{+} ν$ decay

Observation of $K^{+} \to π^{+} π^{0} π^{0} γ$ decay

Searches for the light invisible axion-like particle in $K^{+} \to π^{+} π^{0} a$ decay