Precision measurement of the ratio BR(K-S -> pi(+)pi(-)e(+)e(-))/BR(K-L -> pi(+)pi(-)pi(0)(D))
- J. R. Batley
- G. E. Kalmus
- C. Lazzeroni
- D. J. Munday
- M. Patel
- M. W. Slater
- S. A. Wotton
- R. Arcidiacono
- G. Bocquet
- A. Ceccucci
- D. Cundy
- N. Doble
- V. Falaleev
- L. Gatignon
- A. Gonidec
- R. Grafstrom
- W. Kubischta
- F. Marchetto
- I. Mikulec
- A. Norton
- B. Panzer Steindel
- P. Rubin
- H. Wahl
- E. Goudzovski
- P. Hristov
- V. Kekelidze
- V. Kozhuharov
- L. Litov
- D. Madigozhin
- N. Molokanova
- Y. Potrebenikov
- S. Stoynev
- A. Zinchenko
- E. Monnier
- E. C. Swallow
- R. Winston
- R. Sacco
- A. Walker
- W. Baldini
- P. Dalpiaz
- P. L. Frabetti
- A. Gianoli
- M. Martini
- F. Petrucci
- M. Savrie
- M. Scarpa
- M. Calvetti
- E. Iacopini
- G. Ruggiero
- A. Bizzeti
- M. Lenti
- M. Veltri
- M. Behler
- K. Eppard
- M. Eppard
- A. Hirstius
- K. Kleinknecht
- U. Koch
- P. Marouelli
- L. Masetti
- U. Moosbrugger
- C. M. Morales
- A. Peters
- R. Wanke
- A. Winhart
- A. Dabrowski
- T. F. Martin
- M. Szleper
- M. Velasco
- G. Anzivino
- E. Imbergamo
- G. Lamanna
- P. Lubrano
- A. Michetti
- A. Nappi
- M. Piccini
- M. Valdata Nappi
- P. Cenci
- M. Pepe
- M. C. Petrucci
- C. Cerri
- R. Fantechi
- I. Mannelli
- F. Costantini
- L. Fiorini
- S. Giudici
- G. Pierazzini
- M. Sozzi
- C. Cheshkov
- J. B. Cheze
- M. D. Beer
- P. Debu
- G. Gouge
- G. Marel
- E. Mazzucato
- B. Peyaud
- B. Vallage
- M. Holder
- A. Maier
- M. Ziolkowski
- C. Biino
- N. Cartiglia
- M. Clemencic
- S. G. Lopez
- E. Menichetti
- N. Pastrone
- W. Wislicki
- H. Dibon
- M. Jeitler
- M. Markytan
- G. Neuhofer
- L. Widhalm
- COLLAZUOL, GIANMARIA
DOIAbstract
The K-S -> pi(+)pi(-)e(+)e(-) decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k K-S -> pi(+)pi(-)e(+)e(-) events and 59 k K-L -> pi(+)pi(-)pi(0)(D) normalization decays, the K-S -> pi(+)pi(-)e(+)e(-) branching ratio relative to the K-L -> pi(+)pi(-)pi(0)(D) one was determined to be BR(K-S -> pi(+)pi(-)e(+)e(-))/BR(K-L -> pi(+)pi(-)pi(0)(D)) = (3.28 +/- 0.06(stat) +/- 0.04(syst)) x 10(-2). This result was used to set the upper limit vertical bar g(E1)/g(BR)vertical bar pi(+)pi(-)e(+)e(-) events, where phi is the angle between the pi(+)pi(-) and the e(+)e(-) decay planes in the kaon centre of mass, was found to be A(phi) = (-0.4 +/- 0.8)%, consistent with zero. These results are in good...
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