We present a measurement of the branching ratio of the CP violating decay K-L -> pi(+)pi(-) performed by the KLOE experiment at the phi factory DA Phi NE. We use 328pb(-1) of data collected in 2001 and 2002, corresponding to similar to 150 million tagged K-L mesons. We find BR(K-L -> pi(+)pi(-)) = (1.963 +/- 0.012(stat). +/- 0.017(syst.)) x 10(-3). This branching ratio measurement is fully inclusive of final-state radiation. Using the above result, we determine the modulus of the amplitude ratio vertical bar eta(+-)| to be (2.219 +/- 0.013) x 10(-3) and vertical bar epsilon vertical bar to be (2.216 +/- 0.013) x 10(-3). (c) 2006 Elsevier B.V. All rights reserved.

Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Beltrame, P., Bencivenni, G., et al. (2006). Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector. PHYSICS LETTERS. SECTION B, 638(2-3), 140-145 [10.1016/j.physletb.2006.05.039].

Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector

SANTOVETTI, EMANUELE;
2006-01-01

Abstract

We present a measurement of the branching ratio of the CP violating decay K-L -> pi(+)pi(-) performed by the KLOE experiment at the phi factory DA Phi NE. We use 328pb(-1) of data collected in 2001 and 2002, corresponding to similar to 150 million tagged K-L mesons. We find BR(K-L -> pi(+)pi(-)) = (1.963 +/- 0.012(stat). +/- 0.017(syst.)) x 10(-3). This branching ratio measurement is fully inclusive of final-state radiation. Using the above result, we determine the modulus of the amplitude ratio vertical bar eta(+-)| to be (2.219 +/- 0.013) x 10(-3) and vertical bar epsilon vertical bar to be (2.216 +/- 0.013) x 10(-3). (c) 2006 Elsevier B.V. All rights reserved.
2006
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Beltrame, P., Bencivenni, G., et al. (2006). Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector. PHYSICS LETTERS. SECTION B, 638(2-3), 140-145 [10.1016/j.physletb.2006.05.039].
Ambrosino, F; Antonelli, A; Antonelli, M; Bacci, C; Beltrame, P; Bencivenni, G; Bertolucci, S; Bini, C; Bloise, C; Bocci, V; Bossi, F; Bowring, D; Branchini, P; Caloi, R; Campana, P; Capon, G; Capussela, T; Ceradini, F; Chi, S; Chiefari, G; Ciambrone, P; Conetti, S; De Lucia, E; De Santis, A; De Simone, P; De Zorzi, G; Dell'Agnello, S; Denig, A; Di Domenico, A; Di Donato, C; Di Falco, S; Di Micco, B; Doria, A; Dreucci, M; Felici, G; Ferrari, A; Ferrer, M; Finocchiaro, G; Fiore, S; Forti, C; Franzini, P; Gatti, C; Gauzzi, P; Giovannella, S; Gorini, E; Graziani, E; Incagli, M; Kluge, W; Kulikov, V; Lacava, F; Santovetti, E; Ii,
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/39434
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 46
  • ???jsp.display-item.citation.isi??? 30
social impact