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Pionium as a source of false events in the K -> pi nu nubar decays.

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F20%3A00344922" target="_blank" >RIV/68407700:21670/20:00344922 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1103/PhysRevD.102.113005" target="_blank" >https://doi.org/10.1103/PhysRevD.102.113005</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevD.102.113005" target="_blank" >10.1103/PhysRevD.102.113005</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Pionium as a source of false events in the K -> pi nu nubar decays.

  • Original language description

    We suggest that the decay modes of kaons with a pion and a pionium (pi+ pi- atom) in the final state can constitute a not yet considered background to the very rare decay K -> π ν ν. In fact, a part of pioniums may escape the decay region before decaying into two π0s (or to π0 π0 γ in the case of excited pionium). To illustrate the importance of this background, we show that it may even explain, under some assumptions, the unexpected K L decay events that appeared in the KOTO experiment.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Physical Review D

  • ISSN

    2470-0010

  • e-ISSN

    2470-0029

  • Volume of the periodical

    102

  • Issue of the periodical within the volume

    11

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    5

  • Pages from-to

    "113005-1"-"113005-5"

  • UT code for WoS article

    000600276500002

  • EID of the result in the Scopus database

    2-s2.0-85098151581