Measurement of the charge asymmetry for the K-S -> pi e nu decay and test of CPT symmetry with the KLOE detector

Measurement of the charge asymmetry for the K-S -> pi e nu decay and test of CPT symmetry with the KLOE detector

Using 1.63 fb(-1) of integrated luminosity collected by the KLOE experiment about 7 x 10(4) K-S -> pi(+/-)e(-/+)nu decays have been reconstructed. The measured value of the charge asymmetry for this decay is A(S) = (-4.9 +/- 5.7(stat) +/- 2.6(syst)) x 10(-3) which is almost twice more precise tha...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Anastasi, A, Babusci, D, Berlowski, M, Bloise, C, Bossi, F, Branchini, P, Budano, A, Cao, Bo, Capon, G, Ceradini, F, Ciambrone, P, Curciarello, F, Czerwinski, E, D'Agostini, G, Dane, E, De Leo, V, De Lucia, E, De Santis, A, De Simone, P, Di Cicco, A, Di Domenico, A, Domenici, D, D'Uffizi, A, Fantini, A, Fantini, G, Fermani, P, Fiore, S, Gajos, A, Gauzzi, P, Giovannella, S, Graziani, E, Ivanov, V. L, Johansson, Tord, Kang, X, Kisielewska-Kaminska, D, Kozyrev, E. A, Krzemien, W, Kupsc, Andrzej, Loffredo, S, Lukin, P. A, Mandaglio, G, Martini, M, Messi, R, Miscetti, S, Moricciani, D, Moskal, P, Passeri, A, Patera, V, del Rio, E. Perez, Raha, N, Santangelo, P, Schioppa, M, Selce, A, Silarski, M, Sirghi, F, Solodov, E. P, Tortora, L, Venanzoni, G, Wislicki, W, Wolke, Magnus
Format: Artikel
Sprache:eng
Schlagworte:
CP violation
e plus -e- Experiments
Flavor physics
Subatomic Physics
Subatomär fysik
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Using 1.63 fb(-1) of integrated luminosity collected by the KLOE experiment about 7 x 10(4) K-S -> pi(+/-)e(-/+)nu decays have been reconstructed. The measured value of the charge asymmetry for this decay is A(S) = (-4.9 +/- 5.7(stat) +/- 2.6(syst)) x 10(-3) which is almost twice more precise than the previous KLOE result. The combination of these two measurements gives A(S) = (3.8 +/- 5.0(stat) +/- 2.6(syst)) x 10(-3) and, together with the asymmetry of the K-L semileptonic decay, provides significant tests of the CPT symmetry. The obtained results are in agreement with CPT invariance.
DOI:10.1007/JHEP09(2018)021