Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup
Abstract Results of a study of the $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay at OKA setup are presented. More than 32,000 events of this decay are observed. The differential spectra over the photon energy and the photon–electron opening angle in kaon rest frame are prese...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-08895-2 |
| _version_ | 1818325832709439488 |
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| author | A. Yu. Polyarush S. A. Akimenko A. V. Artamonov A. M. Blik V. S. Burtovoy V. N. Bychkov S. V. Donskov V. A. Duk A. P. Filin S. N. Filippov A. M. Gorin E. N. Gushchin A. V. Inyakin G. D. Kekelidze G. V. Khaustov S. A. Kholodenko A. A. Khudyakov V. N. Kolosov V. I. Kravtsov Yu. G. Kudenko V. F. Kurshetsov V. A. Lishin V. M. Lysan M. V. Medynsky Yu. V. Mikhailov V. F. Obraztsov V. A. Polyakov V. I. Romanovsky V. I. Rykalin A. S. Sadovsky V. D. Samoilenko M. M. Shapkin O. V. Stenyakin O. G. Tchikilev V. A. Uvarov O. P. Yushchenko B. Zh. Zalikhanov |
| author_facet | A. Yu. Polyarush S. A. Akimenko A. V. Artamonov A. M. Blik V. S. Burtovoy V. N. Bychkov S. V. Donskov V. A. Duk A. P. Filin S. N. Filippov A. M. Gorin E. N. Gushchin A. V. Inyakin G. D. Kekelidze G. V. Khaustov S. A. Kholodenko A. A. Khudyakov V. N. Kolosov V. I. Kravtsov Yu. G. Kudenko V. F. Kurshetsov V. A. Lishin V. M. Lysan M. V. Medynsky Yu. V. Mikhailov V. F. Obraztsov V. A. Polyakov V. I. Romanovsky V. I. Rykalin A. S. Sadovsky V. D. Samoilenko M. M. Shapkin O. V. Stenyakin O. G. Tchikilev V. A. Uvarov O. P. Yushchenko B. Zh. Zalikhanov |
| author_sort | A. Yu. Polyarush |
| collection | DOAJ |
| description | Abstract Results of a study of the $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay at OKA setup are presented. More than 32,000 events of this decay are observed. The differential spectra over the photon energy and the photon–electron opening angle in kaon rest frame are presented. The branching ratios, normalized to that of $$K_{e3}$$ K e 3 decay are calculated for different cuts on $$E^*_\gamma $$ E γ ∗ and $$cos\Theta ^{*}_{e\gamma }$$ c o s Θ e γ ∗ . In particular, the branching ratio for $$E^{*}_{\gamma }>30$$ E γ ∗ > 30 MeV and $$\Theta ^{*}_{e \gamma }>20^{\circ }$$ Θ e γ ∗ > 20 ∘ is measured R = $$\frac{Br(K^+ \rightarrow \pi ^{0} e^{+} \nu _{e} \gamma ) }{Br(K^+ \rightarrow \pi ^{0} e^{+} \nu _{e})} $$ B r ( K + → π 0 e + ν e γ ) B r ( K + → π 0 e + ν e ) = = (0.587±0.010(stat.)±0.015(syst.)) $$\times 10^{-2}$$ × 10 - 2 , which is in a good agreement with ChPT $$O(p^{4})$$ O ( p 4 ) calculations. |
| first_indexed | 2024-12-13T11:50:45Z |
| format | Article |
| id | doaj.art-a40d09dbd728484ebf13ff561d959044 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-13T11:50:45Z |
| publishDate | 2021-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-a40d09dbd728484ebf13ff561d9590442022-12-21T23:47:23ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-02-018121510.1140/epjc/s10052-021-08895-2Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setupA. Yu. Polyarush0S. A. Akimenko1A. V. Artamonov2A. M. Blik3V. S. Burtovoy4V. N. Bychkov5S. V. Donskov6V. A. Duk7A. P. Filin8S. N. Filippov9A. M. Gorin10E. N. Gushchin11A. V. Inyakin12G. D. Kekelidze13G. V. Khaustov14S. A. Kholodenko15A. A. Khudyakov16V. N. Kolosov17V. I. Kravtsov18Yu. G. Kudenko19V. F. Kurshetsov20V. A. Lishin21V. M. Lysan22M. V. Medynsky23Yu. V. Mikhailov24V. F. Obraztsov25V. A. Polyakov26V. I. Romanovsky27V. I. Rykalin28A. S. Sadovsky29V. D. Samoilenko30M. M. Shapkin31O. V. Stenyakin32O. G. Tchikilev33V. A. Uvarov34O. P. Yushchenko35B. Zh. Zalikhanov36Institute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”Joint Institute of Nuclear Research“NRC Kurchatov Institute-IHEP”Institute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”Institute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”Institute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”Joint Institute of Nuclear Research“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”Institute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”Institute for Nuclear Research of the Russian Academy of SciencesInstitute for Nuclear Research of the Russian Academy of Sciences“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”Joint Institute of Nuclear Research“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”“NRC Kurchatov Institute-IHEP”Joint Institute of Nuclear ResearchAbstract Results of a study of the $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay at OKA setup are presented. More than 32,000 events of this decay are observed. The differential spectra over the photon energy and the photon–electron opening angle in kaon rest frame are presented. The branching ratios, normalized to that of $$K_{e3}$$ K e 3 decay are calculated for different cuts on $$E^*_\gamma $$ E γ ∗ and $$cos\Theta ^{*}_{e\gamma }$$ c o s Θ e γ ∗ . In particular, the branching ratio for $$E^{*}_{\gamma }>30$$ E γ ∗ > 30 MeV and $$\Theta ^{*}_{e \gamma }>20^{\circ }$$ Θ e γ ∗ > 20 ∘ is measured R = $$\frac{Br(K^+ \rightarrow \pi ^{0} e^{+} \nu _{e} \gamma ) }{Br(K^+ \rightarrow \pi ^{0} e^{+} \nu _{e})} $$ B r ( K + → π 0 e + ν e γ ) B r ( K + → π 0 e + ν e ) = = (0.587±0.010(stat.)±0.015(syst.)) $$\times 10^{-2}$$ × 10 - 2 , which is in a good agreement with ChPT $$O(p^{4})$$ O ( p 4 ) calculations.https://doi.org/10.1140/epjc/s10052-021-08895-2 |
| spellingShingle | A. Yu. Polyarush S. A. Akimenko A. V. Artamonov A. M. Blik V. S. Burtovoy V. N. Bychkov S. V. Donskov V. A. Duk A. P. Filin S. N. Filippov A. M. Gorin E. N. Gushchin A. V. Inyakin G. D. Kekelidze G. V. Khaustov S. A. Kholodenko A. A. Khudyakov V. N. Kolosov V. I. Kravtsov Yu. G. Kudenko V. F. Kurshetsov V. A. Lishin V. M. Lysan M. V. Medynsky Yu. V. Mikhailov V. F. Obraztsov V. A. Polyakov V. I. Romanovsky V. I. Rykalin A. S. Sadovsky V. D. Samoilenko M. M. Shapkin O. V. Stenyakin O. G. Tchikilev V. A. Uvarov O. P. Yushchenko B. Zh. Zalikhanov Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup European Physical Journal C: Particles and Fields |
| title | Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup |
| title_full | Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup |
| title_fullStr | Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup |
| title_full_unstemmed | Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup |
| title_short | Study of $$K^+ \rightarrow \pi ^{0} e^{+} \nu \gamma $$ K + → π 0 e + ν γ decay with OKA setup |
| title_sort | study of k rightarrow pi 0 e nu gamma k π 0 e ν γ decay with oka setup |
| url | https://doi.org/10.1140/epjc/s10052-021-08895-2 |
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