Search for a feebly interacting particle $X$ in the decay $K^{+}\rightarrowπ^{+}X$
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Abstract
- A search for the $K^{+}\rightarrow\pi^{+}X$ decay, where $X$ is a long-lived feebly interacting particle, is performed through an interpretation of the $K^{+}\rightarrow\pi^{+}\nu\bar{\nu}$ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of $X$ masses, $0$-$110\,\text{MeV}/c^{2}$ and $154$-$260\,\text{MeV}/c^{2}$, and lifetimes above $100\,\text{ps}$ are considered. The limits set on the branching ratio, $\text{BR}(K^{+}\rightarrow\pi^{+}X)$, 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.
- Autoren
- NA62 Collaboration
- Autoren-URL
- http://arxiv.org/abs/2011.11329v2
- Schlüsselwörter
- hep-ex
- hep-ex
- Notes
- 14 pages, 6 figures, accepted for publication by JHEP
- Datum der Veröffentlichung
- 2020
- Datum der Datenerfassung
- 2020
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Titel
- Search for a feebly interacting particle $X$ in the decay $K^{+}\rightarrowπ^{+}X$
Files
2011.11329v2.pdf
Datenquelle: arXiv
- Andere Metadatenquellen:
-
- Beziehungen:
- Eigentum von