Precision measurement of the ratio BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)

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; P. Grafström; 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. Savrié; M. Scarpa; M. Calvetti; G. Collazuol; 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. Morales Morales; A. Peters; R. Wanke; A. Winhart; A. Dabrowski; T. Fonseca Martin; M. Szleper; Mayda 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. Chèze; M. De 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. Goy Lopez; E. Menichetti; N. Pastrone; W. Wislicki; H. Dibon; M. Jeitler; M. Markytan; G. Neuhofer; L. Widhalm

doi:10.1016/j.physletb.2010.10.008

Precision measurement of the ratio BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰)

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, P. Grafström, W. Kubischta, F. Marchetto, I. Mikulec, A. NortonB. 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. Savrié, M. Scarpa, M. Calvetti, G. Collazuol, 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. Morales Morales, A. Peters, R. Wanke, A. Winhart, A. Dabrowski, T. Fonseca Martin, M. Szleper, Mayda 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. Chèze, M. De 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. Goy Lopez, E. Menichetti, N. Pastrone, W. Wislicki, H. Dibon, M. Jeitler, M. Markytan, G. Neuhofer, L. Widhalm

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The K_S→π⁺π^-e⁺e^- decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k K_S→π⁺π^-e⁺e^- events and 59 k K_L→π⁺π^-π_D⁰ normalization decays, the K_S→π⁺π^-e⁺e^- branching ratio relative to the K_L→π⁺π^-π_D⁰ one was determined to be BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰)=(3.28±0.06stat±0.04syst)×10^-2. This result was used to set the upper limit |gE1/gBR|<3.0 at 90% CL on the presence, in the decay amplitude, of an E1 direct emission (gE1) term relative to the dominant inner bremsstrahlung (gBR) term. The CP-violating asymmetry Aø in the sinøcosø distribution of K_S→π⁺π^-e⁺e^- events, where ø is the angle between the π⁺π^- and the e⁺e^- decay planes in the kaon centre of mass, was found to be Aø=(-0.4±0.8)%, consistent with zero. These results are in good agreement with a description of the K_S→π⁺π^-e⁺e^- decay amplitude dominated by the CP-even inner bremsstrahlung process.

Original language	English (US)
Pages (from-to)	301-309
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	694
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2010.10.008
State	Published - Jan 3 2011

Keywords

CP-violating asymmetry
Direct emission
Inner bremsstrahlung
Kaon rare decay
Neutral kaon radiative decay

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Batley, J. R., Kalmus, G. E., Lazzeroni, C., Munday, D. J., Patel, M., Slater, M. W., Wotton, S. A., Arcidiacono, R., Bocquet, G., Ceccucci, A., Cundy, D., Doble, N., Falaleev, V., Gatignon, L., Gonidec, A., Grafström, P., Kubischta, W., Marchetto, F., Mikulec, I., ... Widhalm, L. (2011). Precision measurement of the ratio BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰). Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 694(4-5), 301-309. https://doi.org/10.1016/j.physletb.2010.10.008

Batley, J. R. ; Kalmus, G. E. ; Lazzeroni, C. ; Munday, D. J. ; Patel, M. ; Slater, M. W. ; Wotton, S. A. ; Arcidiacono, R. ; Bocquet, G. ; Ceccucci, A. ; Cundy, D. ; Doble, N. ; Falaleev, V. ; Gatignon, L. ; Gonidec, A. ; Grafström, P. ; Kubischta, W. ; Marchetto, F. ; Mikulec, I. ; Norton, A. ; Panzer-Steindel, B. ; Rubin, P. ; Wahl, H. ; Goudzovski, E. ; Hristov, P. ; Kekelidze, V. ; Kozhuharov, V. ; Litov, L. ; Madigozhin, D. ; Molokanova, N. ; Potrebenikov, Y. ; Stoynev, S. ; Zinchenko, A. ; Monnier, E. ; Swallow, E. C. ; Winston, R. ; Sacco, R. ; Walker, A. ; Baldini, W. ; Dalpiaz, P. ; Frabetti, P. L. ; Gianoli, A. ; Martini, M. ; Petrucci, F. ; Savrié, M. ; Scarpa, M. ; Calvetti, M. ; Collazuol, G. ; Iacopini, E. ; Ruggiero, G. ; Bizzeti, A. ; Lenti, M. ; Veltri, M. ; Behler, M. ; Eppard, K. ; Eppard, M. ; Hirstius, A. ; Kleinknecht, K. ; Koch, U. ; Marouelli, P. ; Masetti, L. ; Moosbrugger, U. ; Morales Morales, C. ; Peters, A. ; Wanke, R. ; Winhart, A. ; Dabrowski, A. ; Fonseca Martin, T. ; Szleper, M. ; Velasco, Mayda ; Anzivino, G. ; Imbergamo, E. ; Lamanna, G. ; Lubrano, P. ; Michetti, A. ; Nappi, A. ; Piccini, M. ; Valdata-Nappi, M. ; Cenci, P. ; Pepe, M. ; Petrucci, M. C. ; Cerri, C. ; Fantechi, R. ; Mannelli, I. ; Costantini, F. ; Fiorini, L. ; Giudici, S. ; Pierazzini, G. ; Sozzi, M. ; Cheshkov, C. ; Chèze, J. B. ; De Beer, M. ; Debu, P. ; Gouge, G. ; Marel, G. ; Mazzucato, E. ; Peyaud, B. ; Vallage, B. ; Holder, M. ; Maier, A. ; Ziolkowski, M. ; Biino, C. ; Cartiglia, N. ; Clemencic, M. ; Lopez, S. Goy ; Menichetti, E. ; Pastrone, N. ; Wislicki, W. ; Dibon, H. ; Jeitler, M. ; Markytan, M. ; Neuhofer, G. ; Widhalm, L. / Precision measurement of the ratio BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰). In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2011 ; Vol. 694, No. 4-5. pp. 301-309.

@article{d338e37c54c545b99b4a8cc769571673,

title = "Precision measurement of the ratio BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)",

abstract = "The KS→π+π-e+e- decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k KS→π+π-e+e- events and 59 k KL→π+π-πD0 normalization decays, the KS→π+π-e+e- branching ratio relative to the KL→π+π-πD0 one was determined to be BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)=(3.28±0.06stat±0.04syst)×10-2. This result was used to set the upper limit |gE1/gBR|<3.0 at 90% CL on the presence, in the decay amplitude, of an E1 direct emission (gE1) term relative to the dominant inner bremsstrahlung (gBR) term. The CP-violating asymmetry A{\o} in the sin{\o}cos{\o} distribution of KS→π+π-e+e- events, where {\o} is the angle between the π+π- and the e+e- decay planes in the kaon centre of mass, was found to be A{\o}=(-0.4±0.8)%, consistent with zero. These results are in good agreement with a description of the KS→π+π-e+e- decay amplitude dominated by the CP-even inner bremsstrahlung process.",

keywords = "CP-violating asymmetry, Direct emission, Inner bremsstrahlung, Kaon rare decay, Neutral kaon radiative decay",

author = "Batley, {J. R.} and Kalmus, {G. E.} and C. Lazzeroni and Munday, {D. J.} and M. Patel and Slater, {M. W.} and Wotton, {S. A.} and R. Arcidiacono and G. Bocquet and A. Ceccucci and D. Cundy and N. Doble and V. Falaleev and L. Gatignon and A. Gonidec and P. Grafstr{\"o}m and W. Kubischta and F. Marchetto and I. Mikulec and A. Norton and B. Panzer-Steindel and P. Rubin and H. Wahl and E. Goudzovski and P. Hristov and V. Kekelidze and V. Kozhuharov and L. Litov and D. Madigozhin and N. Molokanova and Y. Potrebenikov and S. Stoynev and A. Zinchenko and E. Monnier and Swallow, {E. C.} and R. Winston and R. Sacco and A. Walker and W. Baldini and P. Dalpiaz and Frabetti, {P. L.} and A. Gianoli and M. Martini and F. Petrucci and M. Savri{\'e} and M. Scarpa and M. Calvetti and G. Collazuol and E. Iacopini and G. Ruggiero and A. Bizzeti and M. Lenti and M. Veltri and M. Behler and K. Eppard and M. Eppard and A. Hirstius and K. Kleinknecht and U. Koch and P. Marouelli and L. Masetti and U. Moosbrugger and {Morales Morales}, C. and A. Peters and R. Wanke and A. Winhart and A. Dabrowski and {Fonseca Martin}, T. and M. Szleper and Mayda Velasco and G. Anzivino and E. Imbergamo and G. Lamanna and P. Lubrano and A. Michetti and A. Nappi and M. Piccini and M. Valdata-Nappi and P. Cenci and M. Pepe and Petrucci, {M. C.} and C. Cerri and R. Fantechi and I. Mannelli and F. Costantini and L. Fiorini and S. Giudici and G. Pierazzini and M. Sozzi and C. Cheshkov and Ch{\`e}ze, {J. B.} and {De Beer}, M. and P. Debu and G. Gouge and G. Marel and E. Mazzucato and B. Peyaud and B. Vallage and M. Holder and A. Maier and M. Ziolkowski and C. Biino and N. Cartiglia and M. Clemencic and Lopez, {S. Goy} and E. Menichetti and N. Pastrone and W. Wislicki and H. Dibon and M. Jeitler and M. Markytan and G. Neuhofer and L. Widhalm",

year = "2011",

month = jan,

day = "3",

doi = "10.1016/j.physletb.2010.10.008",

language = "English (US)",

volume = "694",

pages = "301--309",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "4-5",

}

Batley, JR, Kalmus, GE, Lazzeroni, C, Munday, DJ, Patel, M, Slater, MW, Wotton, SA, Arcidiacono, R, Bocquet, G, Ceccucci, A, Cundy, D, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Grafström, P, Kubischta, W, Marchetto, F, Mikulec, I, Norton, A, Panzer-Steindel, B, Rubin, P, Wahl, H, Goudzovski, E, Hristov, P, Kekelidze, V, Kozhuharov, V, Litov, L, Madigozhin, D, Molokanova, N, Potrebenikov, Y, Stoynev, S, Zinchenko, A, Monnier, E, Swallow, EC, Winston, R, Sacco, R, Walker, A, Baldini, W, Dalpiaz, P, Frabetti, PL, Gianoli, A, Martini, M, Petrucci, F, Savrié, M, Scarpa, M, Calvetti, M, Collazuol, G, Iacopini, E, Ruggiero, G, Bizzeti, A, Lenti, M, Veltri, M, Behler, M, Eppard, K, Eppard, M, Hirstius, A, Kleinknecht, K, Koch, U, Marouelli, P, Masetti, L, Moosbrugger, U, Morales Morales, C, Peters, A, Wanke, R, Winhart, A, Dabrowski, A, Fonseca Martin, T, Szleper, M, Velasco, M, Anzivino, G, Imbergamo, E, Lamanna, G, Lubrano, P, Michetti, A, Nappi, A, Piccini, M, Valdata-Nappi, M, Cenci, P, Pepe, M, Petrucci, MC, Cerri, C, Fantechi, R, Mannelli, I, Costantini, F, Fiorini, L, Giudici, S, Pierazzini, G, Sozzi, M, Cheshkov, C, Chèze, JB, De Beer, M, Debu, P, Gouge, G, Marel, G, Mazzucato, E, Peyaud, B, Vallage, B, Holder, M, Maier, A, Ziolkowski, M, Biino, C, Cartiglia, N, Clemencic, M, Lopez, SG, Menichetti, E, Pastrone, N, Wislicki, W, Dibon, H, Jeitler, M, Markytan, M, Neuhofer, G & Widhalm, L 2011, 'Precision measurement of the ratio BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰)', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 694, no. 4-5, pp. 301-309. https://doi.org/10.1016/j.physletb.2010.10.008

Precision measurement of the ratio BR(K_S→π⁺π^-e⁺e^-)/BR(K_L→π⁺π^-π_D⁰). / Batley, J. R.; Kalmus, G. E.; Lazzeroni, C.; Munday, D. J.; Patel, M.; Slater, M. W.; Wotton, S. A.; Arcidiacono, R.; Bocquet, G.; Ceccucci, A.; Cundy, D.; Doble, N.; Falaleev, V.; Gatignon, L.; Gonidec, A.; Grafström, P.; Kubischta, W.; Marchetto, F.; Mikulec, I.; Norton, A.; Panzer-Steindel, B.; Rubin, P.; Wahl, H.; Goudzovski, E.; Hristov, P.; Kekelidze, V.; Kozhuharov, V.; Litov, L.; Madigozhin, D.; Molokanova, N.; Potrebenikov, Y.; Stoynev, S.; Zinchenko, A.; Monnier, E.; Swallow, E. C.; Winston, R.; Sacco, R.; Walker, A.; Baldini, W.; Dalpiaz, P.; Frabetti, P. L.; Gianoli, A.; Martini, M.; Petrucci, F.; Savrié, M.; Scarpa, M.; Calvetti, M.; Collazuol, G.; Iacopini, E.; Ruggiero, G.; Bizzeti, A.; Lenti, M.; Veltri, M.; Behler, M.; Eppard, K.; Eppard, M.; Hirstius, A.; Kleinknecht, K.; Koch, U.; Marouelli, P.; Masetti, L.; Moosbrugger, U.; Morales Morales, C.; Peters, A.; Wanke, R.; Winhart, A.; Dabrowski, A.; Fonseca Martin, T.; Szleper, M.; Velasco, Mayda; Anzivino, G.; Imbergamo, E.; Lamanna, G.; Lubrano, P.; Michetti, A.; Nappi, A.; Piccini, M.; Valdata-Nappi, M.; Cenci, P.; Pepe, M.; Petrucci, M. C.; Cerri, C.; Fantechi, R.; Mannelli, I.; Costantini, F.; Fiorini, L.; Giudici, S.; Pierazzini, G.; Sozzi, M.; Cheshkov, C.; Chèze, J. B.; De Beer, M.; Debu, P.; Gouge, G.; Marel, G.; Mazzucato, E.; Peyaud, B.; Vallage, B.; Holder, M.; Maier, A.; Ziolkowski, M.; Biino, C.; Cartiglia, N.; Clemencic, M.; Lopez, S. Goy; Menichetti, E.; Pastrone, N.; Wislicki, W.; Dibon, H.; Jeitler, M.; Markytan, M.; Neuhofer, G.; Widhalm, L.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 694, No. 4-5, 03.01.2011, p. 301-309.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Precision measurement of the ratio BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)

AU - Batley, J. R.

AU - Kalmus, G. E.

AU - Lazzeroni, C.

AU - Munday, D. J.

AU - Patel, M.

AU - Slater, M. W.

AU - Wotton, S. A.

AU - Arcidiacono, R.

AU - Bocquet, G.

AU - Ceccucci, A.

AU - Cundy, D.

AU - Doble, N.

AU - Falaleev, V.

AU - Gatignon, L.

AU - Gonidec, A.

AU - Grafström, P.

AU - Kubischta, W.

AU - Marchetto, F.

AU - Mikulec, I.

AU - Norton, A.

AU - Panzer-Steindel, B.

AU - Rubin, P.

AU - Wahl, H.

AU - Goudzovski, E.

AU - Hristov, P.

AU - Kekelidze, V.

AU - Kozhuharov, V.

AU - Litov, L.

AU - Madigozhin, D.

AU - Molokanova, N.

AU - Potrebenikov, Y.

AU - Stoynev, S.

AU - Zinchenko, A.

AU - Monnier, E.

AU - Swallow, E. C.

AU - Winston, R.

AU - Sacco, R.

AU - Walker, A.

AU - Baldini, W.

AU - Dalpiaz, P.

AU - Frabetti, P. L.

AU - Gianoli, A.

AU - Martini, M.

AU - Petrucci, F.

AU - Savrié, M.

AU - Scarpa, M.

AU - Calvetti, M.

AU - Collazuol, G.

AU - Iacopini, E.

AU - Ruggiero, G.

AU - Bizzeti, A.

AU - Lenti, M.

AU - Veltri, M.

AU - Behler, M.

AU - Eppard, K.

AU - Eppard, M.

AU - Hirstius, A.

AU - Kleinknecht, K.

AU - Koch, U.

AU - Marouelli, P.

AU - Masetti, L.

AU - Moosbrugger, U.

AU - Morales Morales, C.

AU - Peters, A.

AU - Wanke, R.

AU - Winhart, A.

AU - Dabrowski, A.

AU - Fonseca Martin, T.

AU - Szleper, M.

AU - Velasco, Mayda

AU - Anzivino, G.

AU - Imbergamo, E.

AU - Lamanna, G.

AU - Lubrano, P.

AU - Michetti, A.

AU - Nappi, A.

AU - Piccini, M.

AU - Valdata-Nappi, M.

AU - Cenci, P.

AU - Pepe, M.

AU - Petrucci, M. C.

AU - Cerri, C.

AU - Fantechi, R.

AU - Mannelli, I.

AU - Costantini, F.

AU - Fiorini, L.

AU - Giudici, S.

AU - Pierazzini, G.

AU - Sozzi, M.

AU - Cheshkov, C.

AU - Chèze, J. B.

AU - De Beer, M.

AU - Debu, P.

AU - Gouge, G.

AU - Marel, G.

AU - Mazzucato, E.

AU - Peyaud, B.

AU - Vallage, B.

AU - Holder, M.

AU - Maier, A.

AU - Ziolkowski, M.

AU - Biino, C.

AU - Cartiglia, N.

AU - Clemencic, M.

AU - Lopez, S. Goy

AU - Menichetti, E.

AU - Pastrone, N.

AU - Wislicki, W.

AU - Dibon, H.

AU - Jeitler, M.

AU - Markytan, M.

AU - Neuhofer, G.

AU - Widhalm, L.

PY - 2011/1/3

Y1 - 2011/1/3

N2 - The KS→π+π-e+e- decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k KS→π+π-e+e- events and 59 k KL→π+π-πD0 normalization decays, the KS→π+π-e+e- branching ratio relative to the KL→π+π-πD0 one was determined to be BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)=(3.28±0.06stat±0.04syst)×10-2. This result was used to set the upper limit |gE1/gBR|<3.0 at 90% CL on the presence, in the decay amplitude, of an E1 direct emission (gE1) term relative to the dominant inner bremsstrahlung (gBR) term. The CP-violating asymmetry Aø in the sinøcosø distribution of KS→π+π-e+e- events, where ø is the angle between the π+π- and the e+e- decay planes in the kaon centre of mass, was found to be Aø=(-0.4±0.8)%, consistent with zero. These results are in good agreement with a description of the KS→π+π-e+e- decay amplitude dominated by the CP-even inner bremsstrahlung process.

AB - The KS→π+π-e+e- decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k KS→π+π-e+e- events and 59 k KL→π+π-πD0 normalization decays, the KS→π+π-e+e- branching ratio relative to the KL→π+π-πD0 one was determined to be BR(KS→π+π-e+e-)/BR(KL→π+π-πD0)=(3.28±0.06stat±0.04syst)×10-2. This result was used to set the upper limit |gE1/gBR|<3.0 at 90% CL on the presence, in the decay amplitude, of an E1 direct emission (gE1) term relative to the dominant inner bremsstrahlung (gBR) term. The CP-violating asymmetry Aø in the sinøcosø distribution of KS→π+π-e+e- events, where ø is the angle between the π+π- and the e+e- decay planes in the kaon centre of mass, was found to be Aø=(-0.4±0.8)%, consistent with zero. These results are in good agreement with a description of the KS→π+π-e+e- decay amplitude dominated by the CP-even inner bremsstrahlung process.

KW - CP-violating asymmetry

KW - Direct emission

KW - Inner bremsstrahlung

KW - Kaon rare decay

KW - Neutral kaon radiative decay

UR - http://www.scopus.com/inward/record.url?scp=78650304775&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78650304775&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2010.10.008

DO - 10.1016/j.physletb.2010.10.008

M3 - Article

AN - SCOPUS:78650304775

VL - 694

SP - 301

EP - 309

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 4-5

ER -