Using a sample of over 400 million phi -> KSKL decays produced during the years 2001 and 2002 at the DA Phi NE e(+)e(-) collider, the ratio R-S(pi) = Gamma(K-S -> pi(+) pi(-)(gamma))/Gamma (K-S -> pi(0)pi(0)) has been measured with the KLOE detector. The result is R-pi(S) = 2.2555 +/- 0.0012(stat)+/- 0.0021(corr-stat)+/- 0.0050(syst), which is in good agreement with the previously published result based on the KLOE data sample from the year 2000. The average of the KLOE results is R-S(pi) = 2.2549 +/- 0.0054, reducing the total error by a factor of three, to 0.25%.

Precise measurement of Gamma(K-S -> pi(+)pi(-)(gamma))/Gamma(K-S -> pi(0)pi(0)) with the KLOE detector at DA phi NE

DI DONATO, CAMILLA;
2006

Abstract

Using a sample of over 400 million phi -> KSKL decays produced during the years 2001 and 2002 at the DA Phi NE e(+)e(-) collider, the ratio R-S(pi) = Gamma(K-S -> pi(+) pi(-)(gamma))/Gamma (K-S -> pi(0)pi(0)) has been measured with the KLOE detector. The result is R-pi(S) = 2.2555 +/- 0.0012(stat)+/- 0.0021(corr-stat)+/- 0.0050(syst), which is in good agreement with the previously published result based on the KLOE data sample from the year 2000. The average of the KLOE results is R-S(pi) = 2.2549 +/- 0.0054, reducing the total error by a factor of three, to 0.25%.
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: http://hdl.handle.net/11367/46904
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 43
  • ???jsp.display-item.citation.isi??? 21
social impact