Search for a feebly interacting particle X in the decay K+ -> pi X+

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10439670" target="_blank" >RIV/00216208:11320/21:10439670 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Y6qc890UZf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Y6qc890UZf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP03(2021)058" target="_blank" >10.1007/JHEP03(2021)058</a>

Result language
angličtina
Original language name
Search for a feebly interacting particle X in the decay K+ -> pi X+
Original language description
A search for the K+ -> pi X+ decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K+ -> pi+nu nu <mml:mo stretchy="true"><overbar></mml:mover> analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0-110 MeV/c(2) and 154-260 MeV/c(2), and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K+ -> pi X+), are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)