Observation of the rare decay KS → π0e +e-

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; D. Gurev; P. Hristov; V. Kekelidze; L. Litov; D. Madigozhin; N. Molokanova; Y. Potrebenikov; S. Stoynev; A. Zinchenko; E. Monnier; E. Swallow; R. Winston; R. Sacco; A. Walker; W. Baldini; P. Dalpiaz; P. L. Frabetti; A. Gianoli; M. Martini; F. Petrucci; M. Scarpa; M. Savrié; A. Bizzeti; M. Calvetti; G. Collazuol; G. Graziani; E. Iacopini; M. Lenti; F. Martelli; G. Ruggiero; M. Veltri; M. Behler; K. Eppard; M. Eppard; A. Hirstius; K. Kleinknecht; U. Koch; L. Masetti; P. Marouelli; U. Moosbrugger; C. Morales Morales; A. Peters; R. Wanke; A. Winhart; A. Dabrowski; T. Fonseca Martin; S. Goy Lopez; Mayda Velasco; G. Anzivino; P. Cenci; E. Imbergamo; G. Lamanna; P. Lubrano; A. Michetti; A. Nappi; M. Pepe; M. C. Petrucci; M. Piccini; M. Valdata; C. Cerri; F. Costantini; R. Fantechi; L. Fiorini; S. Giudici; I. Mannelli; G. Pierazzini; M. Sozzi; C. Cheshkov; J. B. Cheze; 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; E. Menichetti; N. Pastrone; W. Wislicki; H. Dibon; M. Jeitler; M. Markytan; G. Neuhofer; L. Widhalm

doi:10.1016/j.physletb.2003.10.001

Observation of the rare decay K_S → π⁰e ⁺e^-

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, D. Gurev, P. Hristov, V. Kekelidze, L. Litov, D. Madigozhin, N. Molokanova, Y. Potrebenikov, S. Stoynev, A. Zinchenko, E. Monnier, E. Swallow, R. Winston, R. Sacco, A. Walker, W. Baldini, P. Dalpiaz, P. L. Frabetti, A. Gianoli, M. Martini, F. Petrucci, M. Scarpa, M. Savrié, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, M. Lenti, F. Martelli, G. Ruggiero, M. Veltri, M. Behler, K. Eppard, M. Eppard, A. Hirstius, K. Kleinknecht, U. Koch, L. Masetti, P. Marouelli, U. Moosbrugger, C. Morales Morales, A. Peters, R. Wanke, A. Winhart, A. Dabrowski, T. Fonseca Martin, S. Goy Lopez, Mayda Velasco, G. Anzivino, P. Cenci, E. Imbergamo, G. Lamanna, P. Lubrano, A. Michetti, A. Nappi, M. Pepe, M. C. Petrucci, M. Piccini, M. Valdata, C. Cerri, F. Costantini, R. Fantechi, L. Fiorini, S. Giudici, I. Mannelli, G. Pierazzini, M. Sozzi, C. Cheshkov, J. B. Cheze, 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, E. Menichetti, N. Pastrone, W. Wislicki, H. Dibon, M. Jeitler, M. Markytan, G. Neuhofer, L. Widhalm

^*Corresponding author for this work

Physics and Astronomy

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Abstract

A search for the decay K_S → π⁰e ⁺e^- has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity K_S beam, 7 events were found with a background of 0. 15 events. The branching fraction BR(K_S → π⁰e ⁺e^-, m_ee > 0.165 GeV/c²) = (3.0_-1.2^+1.5(stat)±0.2(syst)) × 10 ^-9 has been measured. Using a vector matrix element and a form factor equal to one, the measurement gives BR(K_S → π ⁰e⁺e^-) = (5.8_-2.4^+2.9) × 10^-9.

Original language	English (US)
Pages (from-to)	43-54
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	576
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2003.10.001
State	Published - Dec 4 2003

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2003.10.001

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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. (2003). Observation of the rare decay K_S → π⁰e ⁺e^-. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 576(1-2), 43-54. https://doi.org/10.1016/j.physletb.2003.10.001

@article{52f30b6e38fd4fe0840179606e557818,

title = "Observation of the rare decay KS → π0e +e-",

abstract = "A search for the decay KS → π0e +e- has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity KS beam, 7 events were found with a background of 0. 15 events. The branching fraction BR(KS → π0e +e-, mee > 0.165 GeV/c2) = (3.0-1.2+1.5(stat)±0.2(syst)) × 10 -9 has been measured. Using a vector matrix element and a form factor equal to one, the measurement gives BR(KS → π 0e+e-) = (5.8-2.4+2.9) × 10-9.",

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 D. Gurev and P. Hristov and V. Kekelidze and L. Litov and D. Madigozhin and N. Molokanova and Y. Potrebenikov and S. Stoynev and A. Zinchenko and E. Monnier and E. Swallow 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. Scarpa and M. Savri{\'e} and A. Bizzeti and M. Calvetti and G. Collazuol and G. Graziani and E. Iacopini and M. Lenti and F. Martelli and G. Ruggiero and M. Veltri and M. Behler and K. Eppard and M. Eppard and A. Hirstius and K. Kleinknecht and U. Koch and L. Masetti and P. Marouelli and U. Moosbrugger and {Morales Morales}, C. and A. Peters and R. Wanke and A. Winhart and A. Dabrowski and {Fonseca Martin}, T. and {Goy Lopez}, S. and Mayda Velasco and G. Anzivino and P. Cenci and E. Imbergamo and G. Lamanna and P. Lubrano and A. Michetti and A. Nappi and M. Pepe and Petrucci, {M. C.} and M. Piccini and M. Valdata and C. Cerri and F. Costantini and R. Fantechi and L. Fiorini and S. Giudici and I. Mannelli and G. Pierazzini and M. Sozzi and C. Cheshkov and Cheze, {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 E. Menichetti and N. Pastrone and W. Wislicki and H. Dibon and M. Jeitler and M. Markytan and G. Neuhofer and L. Widhalm",

year = "2003",

month = dec,

day = "4",

doi = "10.1016/j.physletb.2003.10.001",

language = "English (US)",

volume = "576",

pages = "43--54",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

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, Gurev, D, Hristov, P, Kekelidze, V, Litov, L, Madigozhin, D, Molokanova, N, Potrebenikov, Y, Stoynev, S, Zinchenko, A, Monnier, E, Swallow, E, Winston, R, Sacco, R, Walker, A, Baldini, W, Dalpiaz, P, Frabetti, PL, Gianoli, A, Martini, M, Petrucci, F, Scarpa, M, Savrié, M, Bizzeti, A, Calvetti, M, Collazuol, G, Graziani, G, Iacopini, E, Lenti, M, Martelli, F, Ruggiero, G, Veltri, M, Behler, M, Eppard, K, Eppard, M, Hirstius, A, Kleinknecht, K, Koch, U, Masetti, L, Marouelli, P, Moosbrugger, U, Morales Morales, C, Peters, A, Wanke, R, Winhart, A, Dabrowski, A, Fonseca Martin, T, Goy Lopez, S, Velasco, M, Anzivino, G, Cenci, P, Imbergamo, E, Lamanna, G, Lubrano, P, Michetti, A, Nappi, A, Pepe, M, Petrucci, MC, Piccini, M, Valdata, M, Cerri, C, Costantini, F, Fantechi, R, Fiorini, L, Giudici, S, Mannelli, I, Pierazzini, G, Sozzi, M, Cheshkov, C, Cheze, 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, Menichetti, E, Pastrone, N, Wislicki, W, Dibon, H, Jeitler, M, Markytan, M, Neuhofer, G & Widhalm, L 2003, 'Observation of the rare decay K_S → π⁰e ⁺e^-', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 576, no. 1-2, pp. 43-54. https://doi.org/10.1016/j.physletb.2003.10.001

TY - JOUR

T1 - Observation of the rare decay KS → π0e +e-

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 - Gurev, D.

AU - Hristov, P.

AU - Kekelidze, 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.

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 - Scarpa, M.

AU - Savrié, M.

AU - Bizzeti, A.

AU - Calvetti, M.

AU - Collazuol, G.

AU - Graziani, G.

AU - Iacopini, E.

AU - Lenti, M.

AU - Martelli, F.

AU - Ruggiero, G.

AU - Veltri, M.

AU - Behler, M.

AU - Eppard, K.

AU - Eppard, M.

AU - Hirstius, A.

AU - Kleinknecht, K.

AU - Koch, U.

AU - Masetti, L.

AU - Marouelli, P.

AU - Moosbrugger, U.

AU - Morales Morales, C.

AU - Peters, A.

AU - Wanke, R.

AU - Winhart, A.

AU - Dabrowski, A.

AU - Fonseca Martin, T.

AU - Goy Lopez, S.

AU - Velasco, Mayda

AU - Anzivino, G.

AU - Cenci, P.

AU - Imbergamo, E.

AU - Lamanna, G.

AU - Lubrano, P.

AU - Michetti, A.

AU - Nappi, A.

AU - Pepe, M.

AU - Petrucci, M. C.

AU - Piccini, M.

AU - Valdata, M.

AU - Cerri, C.

AU - Costantini, F.

AU - Fantechi, R.

AU - Fiorini, L.

AU - Giudici, S.

AU - Mannelli, I.

AU - Pierazzini, G.

AU - Sozzi, M.

AU - Cheshkov, C.

AU - Cheze, 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 - Menichetti, E.

AU - Pastrone, N.

AU - Wislicki, W.

AU - Dibon, H.

AU - Jeitler, M.

AU - Markytan, M.

AU - Neuhofer, G.

AU - Widhalm, L.

PY - 2003/12/4

Y1 - 2003/12/4

N2 - A search for the decay KS → π0e +e- has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity KS beam, 7 events were found with a background of 0. 15 events. The branching fraction BR(KS → π0e +e-, mee > 0.165 GeV/c2) = (3.0-1.2+1.5(stat)±0.2(syst)) × 10 -9 has been measured. Using a vector matrix element and a form factor equal to one, the measurement gives BR(KS → π 0e+e-) = (5.8-2.4+2.9) × 10-9.

AB - A search for the decay KS → π0e +e- has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity KS beam, 7 events were found with a background of 0. 15 events. The branching fraction BR(KS → π0e +e-, mee > 0.165 GeV/c2) = (3.0-1.2+1.5(stat)±0.2(syst)) × 10 -9 has been measured. Using a vector matrix element and a form factor equal to one, the measurement gives BR(KS → π 0e+e-) = (5.8-2.4+2.9) × 10-9.

UR - http://www.scopus.com/inward/record.url?scp=1642524306&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1642524306&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2003.10.001

DO - 10.1016/j.physletb.2003.10.001

M3 - Article

AN - SCOPUS:1642524306

SN - 0370-2693

VL - 576

SP - 43

EP - 54

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

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

IS - 1-2

ER -

Observation of the rare decay K_S → π⁰e ⁺e^-

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