A search for the dark photon in the OKA experiment

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	The OKA Collaboration, Sadovsky, A. S., Filin, A. P., Artamonov, A. V., Donskov, S. V., Gorin, A. M., Inyakin, A. V., Khaustov, G. V., Kholodenko, S. A., Kolosov, V. N., Konoplyannikov, A. K., Kurshetsov, V. F., Lishin, V. A., Medynsky, M. V., Miagkov, A. G., Obraztsov, V. F., Okhotnikov, A. V., Romanovsky, V. I., Rykalin, V. I., Samoylenko, V. D., Shapkin, M. M., Slabospitsky, S. R., Sobol, A. E., Tiurin, I. S., Uvarov, V. A., Yushchenko, O. P., Filippov, S. N., Gushchin, E. N., Khudyakov, A. A., Kravtsov, V. I., Kudenko, Yu. G., Kulik, A. V., Polyarush, A. Yu., Bychkov, V. N., Kekelidze, G. D., Lysan, V. M., Polyakov, V. A., Zalikhanov, B. Zh.
Format:	Preprint
Veröffentlicht:	2026
Schlagworte:	High Energy Physics - Experiment
Online-Zugang:	Acceder al recurso
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_version_	1866911708697591808
author	The OKA Collaboration Sadovsky, A. S. Filin, A. P. Artamonov, A. V. Donskov, S. V. Gorin, A. M. Inyakin, A. V. Khaustov, G. V. Kholodenko, S. A. Kolosov, V. N. Konoplyannikov, A. K. Kurshetsov, V. F. Lishin, V. A. Medynsky, M. V. Miagkov, A. G. Obraztsov, V. F. Okhotnikov, A. V. Romanovsky, V. I. Rykalin, V. I. Samoylenko, V. D. Shapkin, M. M. Slabospitsky, S. R. Sobol, A. E. Tiurin, I. S. Uvarov, V. A. Yushchenko, O. P. Filippov, S. N. Gushchin, E. N. Khudyakov, A. A. Kravtsov, V. I. Kudenko, Yu. G. Kulik, A. V. Polyarush, A. Yu. Bychkov, V. N. Kekelidze, G. D. Lysan, V. M. Polyakov, V. A. Zalikhanov, B. Zh.
author_facet	The OKA Collaboration Sadovsky, A. S. Filin, A. P. Artamonov, A. V. Donskov, S. V. Gorin, A. M. Inyakin, A. V. Khaustov, G. V. Kholodenko, S. A. Kolosov, V. N. Konoplyannikov, A. K. Kurshetsov, V. F. Lishin, V. A. Medynsky, M. V. Miagkov, A. G. Obraztsov, V. F. Okhotnikov, A. V. Romanovsky, V. I. Rykalin, V. I. Samoylenko, V. D. Shapkin, M. M. Slabospitsky, S. R. Sobol, A. E. Tiurin, I. S. Uvarov, V. A. Yushchenko, O. P. Filippov, S. N. Gushchin, E. N. Khudyakov, A. A. Kravtsov, V. I. Kudenko, Yu. G. Kulik, A. V. Polyarush, A. Yu. Bychkov, V. N. Kekelidze, G. D. Lysan, V. M. Polyakov, V. A. Zalikhanov, B. Zh.
contents	A search for the massless dark photon in the decay $K^{+}\to π^{+}π^{0}\overline{{} γ}$ is performed with the OKA detector exposed to 17.7 GeV/c RF separated secondary beam of the U70 Proton Synchrotron. A high-statistics data sample of the $K^{+}$ decays is used for a missing mass search of the stable massless invisible dark photon ($\overlineγ$) in the final state. In the absence of a statistically valuable signal the upper limit on the branching ratio of the decay $Br<2.0\times10^{-6}$ is obtained with a 90% confidence level based on a realistic matrix element of the process. Currently, it is the best upper limit for this hypothetical decay channel.
format	Preprint
id	arxiv_https___arxiv_org_abs_2605_23533
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	A search for the dark photon in the OKA experiment The OKA Collaboration Sadovsky, A. S. Filin, A. P. Artamonov, A. V. Donskov, S. V. Gorin, A. M. Inyakin, A. V. Khaustov, G. V. Kholodenko, S. A. Kolosov, V. N. Konoplyannikov, A. K. Kurshetsov, V. F. Lishin, V. A. Medynsky, M. V. Miagkov, A. G. Obraztsov, V. F. Okhotnikov, A. V. Romanovsky, V. I. Rykalin, V. I. Samoylenko, V. D. Shapkin, M. M. Slabospitsky, S. R. Sobol, A. E. Tiurin, I. S. Uvarov, V. A. Yushchenko, O. P. Filippov, S. N. Gushchin, E. N. Khudyakov, A. A. Kravtsov, V. I. Kudenko, Yu. G. Kulik, A. V. Polyarush, A. Yu. Bychkov, V. N. Kekelidze, G. D. Lysan, V. M. Polyakov, V. A. Zalikhanov, B. Zh. High Energy Physics - Experiment A search for the massless dark photon in the decay $K^{+}\to π^{+}π^{0}\overline{{} γ}$ is performed with the OKA detector exposed to 17.7 GeV/c RF separated secondary beam of the U70 Proton Synchrotron. A high-statistics data sample of the $K^{+}$ decays is used for a missing mass search of the stable massless invisible dark photon ($\overlineγ$) in the final state. In the absence of a statistically valuable signal the upper limit on the branching ratio of the decay $Br<2.0\times10^{-6}$ is obtained with a 90% confidence level based on a realistic matrix element of the process. Currently, it is the best upper limit for this hypothetical decay channel.
title	A search for the dark photon in the OKA experiment
topic	High Energy Physics - Experiment
url	https://arxiv.org/abs/2605.23533