Search for a feebly interacting particle X in the decay K+→π+X
(2021) In Journal of High Energy Physics 2021(3).- Abstract
A search for the K+ → π+X decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K+ → π+νν¯ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0–110 MeV/c2 and 154–260 MeV/c2, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K+ → π+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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/98234f55-685f-4e80-926d-d683e2c52a07
- author
- Cortina Gil, E. and Husek, T. LU
- author collaboration
- organization
- publishing date
- 2021-03
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Beyond Standard Model, Exotics, Fixed target experiments
- in
- Journal of High Energy Physics
- volume
- 2021
- issue
- 3
- article number
- 58
- publisher
- Springer
- external identifiers
-
- scopus:85104929935
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP03(2021)058
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021, The Author(s).
- id
- 98234f55-685f-4e80-926d-d683e2c52a07
- date added to LUP
- 2022-03-30 11:40:56
- date last changed
- 2024-04-12 02:38:17
@article{98234f55-685f-4e80-926d-d683e2c52a07, abstract = {{<p>A search for the K<sup>+</sup> → π<sup>+</sup>X decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K<sup>+</sup> → π<sup>+</sup>νν¯ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0–110 MeV/c<sup>2</sup> and 154–260 MeV/c<sup>2</sup>, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K<sup>+</sup> → π<sup>+</sup>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.</p>}}, author = {{Cortina Gil, E. and Husek, T.}}, issn = {{1029-8479}}, keywords = {{Beyond Standard Model; Exotics; Fixed target experiments}}, language = {{eng}}, number = {{3}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Search for a feebly interacting particle X in the decay K<sup>+</sup>→π<sup>+</sup>X}}, url = {{http://dx.doi.org/10.1007/JHEP03(2021)058}}, doi = {{10.1007/JHEP03(2021)058}}, volume = {{2021}}, year = {{2021}}, }