First observation of the KS → π0γ γ decay

A. Lai; D. Marras; J. R. Batley; R. S. Dosanjh; T. J. Gershon; G. E. Kalmus; C. Lazzeroni; D. J. Munday; E. Olaiya; M. A. Parker; T. O. White; S. A. Wotton; R. Arcidiacono; G. Barr; G. Bocquet; A. Ceccucci; T. Cuhadar-Dönszelmann; D. Cundy; N. Doble; V. Falaleev; L. Gatignon; A. Gonidec; B. Gorini; P. Grafström; W. Kubischta; A. Lacourt; A. Norton; B. Panzer-Steindel; G. Tatishvili; H. Wahl; C. Cheshkov; P. Hristov; V. Kekelidze; D. Madigojine; N. Molokanova; Y. Potrebenikov; A. Zinchenko; V. Martin; P. Rubin; R. Sacco; A. Walker; M. Contalbrigo; P. Dalpiaz; J. Duclos; P. L. Frabetti; A. Gianoli; M. Martini; F. Petrucci; M. Savrié; A. Bizzeti; M. Calvetti; G. Collazuol; G. Graziani; E. Iacopini; M. Lenti; F. Martelli; M. Veltri; M. Eppard; A. Hirstius; K. Holtz; K. Kleinknecht; U. Koch; L. Köpke; P. Lopes da Silva; P. Marouelli; I. Mestvirishvili; I. Pellmann; A. Peters; S. A. Schmidt; V. Schönharting; Y. Schué; R. Wanke; A. Winhart; M. Wittgen; J. C. Chollet; L. Fayard; L. Iconomidou-Fayard; G. Unal; I. Wingerter-Seez; G. Anzivino; P. Cenci; E. Imbergamo; P. Lubrano; A. Mestvirishvili; A. Nappi; M. Pepe; M. Piccini; R. Casali; C. Cerri; M. Cirilli; F. Costantini; R. Fantechi; L. Fiorini; S. Giudici; I. Mannelli; G. Pierazzini; M. Sozzi; J. B. Cheze; M. De Beer; P. Debu; F. Derue; A. Formica; R. Granier de Cassagnac; G. Gouge; G. Marel; E. Mazzucato; B. Peyaud; R. Turlay; B. Vallage; M. Holder; A. Maier; M. Ziolkowski; C. Biino; N. Cartiglia; F. Marchetto; E. Menichetti; N. Pastrone; J. Nassalski; E. Rondio; M. Szleper; W. Wislicki; S. Wronka; H. Dibon; M. Jeitler; M. Markytan; I. Mikulec; G. Neuhofer; M. Pernicka; A. Taurok; L. Widhalm

doi:10.1016/j.physletb.2003.10.073

First observation of the K_S → π⁰γ γ decay

A. Lai
, D. Marras
, J. R. Batley
, R. S. Dosanjh
, T. J. Gershon
, G. E. Kalmus
, C. Lazzeroni
, D. J. Munday
, E. Olaiya
, M. A. Parker
, T. O. White
, S. A. Wotton
, R. Arcidiacono
, G. Barr
, G. Bocquet
, A. Ceccucci
, T. Cuhadar-Dönszelmann
, D. Cundy
, N. Doble
, V. Falaleev

L. Gatignon, A. Gonidec, B. Gorini, P. Grafström, W. Kubischta, A. Lacourt, A. Norton, B. Panzer-Steindel, G. Tatishvili, H. Wahl, C. Cheshkov, P. Hristov, V. Kekelidze, D. Madigojine, N. Molokanova, Y. Potrebenikov, A. Zinchenko, V. Martin, P. Rubin, R. Sacco, A. Walker, M. Contalbrigo, P. Dalpiaz, J. Duclos, P. L. Frabetti, A. Gianoli, M. Martini, F. Petrucci, M. Savrié, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, M. Lenti, F. Martelli, M. Veltri, M. Eppard, A. Hirstius, K. Holtz, K. Kleinknecht, U. Koch, L. Köpke, P. Lopes da Silva, P. Marouelli, I. Mestvirishvili, I. Pellmann, A. Peters, S. A. Schmidt, V. Schönharting, Y. Schué, R. Wanke, A. Winhart, M. Wittgen, J. C. Chollet, L. Fayard, L. Iconomidou-Fayard, G. Unal, I. Wingerter-Seez, G. Anzivino, P. Cenci, E. Imbergamo, P. Lubrano, A. Mestvirishvili, A. Nappi, M. Pepe, M. Piccini, R. Casali, C. Cerri, M. Cirilli, F. Costantini, R. Fantechi, L. Fiorini, S. Giudici, I. Mannelli, G. Pierazzini, M. Sozzi, J. B. Cheze, M. De Beer, P. Debu, F. Derue, A. Formica, R. Granier de Cassagnac, G. Gouge, G. Marel, E. Mazzucato, B. Peyaud, R. Turlay, B. Vallage, M. Holder, A. Maier, M. Ziolkowski, C. Biino, N. Cartiglia, F. Marchetto, E. Menichetti, N. Pastrone, J. Nassalski, E. Rondio, M. Szleper, W. Wislicki, S. Wronka, H. Dibon, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer, M. Pernicka, A. Taurok, L. Widhalm

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

Abstract

Using the NA48 detector at the CERN SPS, 31 K_S → π ⁰γγ candidates with an estimated background of 13.7 ± 3.2 events have been observed. This first observation leads to a branching ratio of BR(K_S → π⁰γγ) _z>0.2 = (4.9 ± 1.6_stat ± 0.9 _syst) × 10^-8 in agreement with Chiral Perturbation Theory predictions.

Original language	English
Pages (from-to)	276-284
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	578
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physletb.2003.10.073
Publication status	Published - 8 Jan 2004
Externally published	Yes

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10.1016/j.physletb.2003.10.073

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Lai, A., Marras, D., Batley, J. R., Dosanjh, R. S., Gershon, T. J., Kalmus, G. E., Lazzeroni, C., Munday, D. J., Olaiya, E., Parker, M. A., White, T. O., Wotton, S. A., Arcidiacono, R., Barr, G., Bocquet, G., Ceccucci, A., Cuhadar-Dönszelmann, T., Cundy, D., Doble, N., ... Widhalm, L. (2004). First observation of the K_S → π⁰γ γ decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 578(3-4), 276-284. https://doi.org/10.1016/j.physletb.2003.10.073

@article{1c18088e298143e1b7d1fb40c77e84e9,

title = "First observation of the KS → π0γ γ decay",

abstract = "Using the NA48 detector at the CERN SPS, 31 KS → π 0γγ candidates with an estimated background of 13.7 ± 3.2 events have been observed. This first observation leads to a branching ratio of BR(KS → π0γγ) z>0.2 = (4.9 ± 1.6stat ± 0.9 syst) × 10-8 in agreement with Chiral Perturbation Theory predictions.",

author = "A. Lai and D. Marras and Batley, \{J. R.\} and Dosanjh, \{R. S.\} and Gershon, \{T. J.\} and Kalmus, \{G. E.\} and C. Lazzeroni and Munday, \{D. J.\} and E. Olaiya and Parker, \{M. A.\} and White, \{T. O.\} and Wotton, \{S. A.\} and R. Arcidiacono and G. Barr and G. Bocquet and A. Ceccucci and T. Cuhadar-D{\"o}nszelmann and D. Cundy and N. Doble and V. Falaleev and L. Gatignon and A. Gonidec and B. Gorini and P. Grafstr{\"o}m and W. Kubischta and A. Lacourt and A. Norton and B. Panzer-Steindel and G. Tatishvili and H. Wahl and C. Cheshkov and P. Hristov and V. Kekelidze and D. Madigojine and N. Molokanova and Y. Potrebenikov and A. Zinchenko and V. Martin and P. Rubin and R. Sacco and A. Walker and M. Contalbrigo and P. Dalpiaz and J. Duclos and Frabetti, \{P. L.\} and A. Gianoli and M. Martini and F. Petrucci 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 M. Veltri and M. Eppard and A. Hirstius and K. Holtz and K. Kleinknecht and U. Koch and L. K{\"o}pke and \{Lopes da Silva\}, P. and P. Marouelli and I. Mestvirishvili and I. Pellmann and A. Peters and Schmidt, \{S. A.\} and V. Sch{\"o}nharting and Y. Schu{\'e} and R. Wanke and A. Winhart and M. Wittgen and Chollet, \{J. C.\} and L. Fayard and L. Iconomidou-Fayard and G. Unal and I. Wingerter-Seez and G. Anzivino and P. Cenci and E. Imbergamo and P. Lubrano and A. Mestvirishvili and A. Nappi and M. Pepe and M. Piccini and R. Casali and C. Cerri and M. Cirilli and F. Costantini and R. Fantechi and L. Fiorini and S. Giudici and I. Mannelli and G. Pierazzini and M. Sozzi and Cheze, \{J. B.\} and \{De Beer\}, M. and P. Debu and F. Derue and A. Formica and \{Granier de Cassagnac\}, R. and G. Gouge and G. Marel and E. Mazzucato and B. Peyaud and R. Turlay and B. Vallage and M. Holder and A. Maier and M. Ziolkowski and C. Biino and N. Cartiglia and F. Marchetto and E. Menichetti and N. Pastrone and J. Nassalski and E. Rondio and M. Szleper and W. Wislicki and S. Wronka and H. Dibon and M. Jeitler and M. Markytan and I. Mikulec and G. Neuhofer and M. Pernicka and A. Taurok and L. Widhalm",

year = "2004",

month = jan,

day = "8",

doi = "10.1016/j.physletb.2003.10.073",

language = "English",

volume = "578",

pages = "276--284",

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

issn = "0370-2693",

number = "3-4",

}

Lai, A, Marras, D, Batley, JR, Dosanjh, RS, Gershon, TJ, Kalmus, GE, Lazzeroni, C, Munday, DJ, Olaiya, E, Parker, MA, White, TO, Wotton, SA, Arcidiacono, R, Barr, G, Bocquet, G, Ceccucci, A, Cuhadar-Dönszelmann, T, Cundy, D, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Gorini, B, Grafström, P, Kubischta, W, Lacourt, A, Norton, A, Panzer-Steindel, B, Tatishvili, G, Wahl, H, Cheshkov, C, Hristov, P, Kekelidze, V, Madigojine, D, Molokanova, N, Potrebenikov, Y, Zinchenko, A, Martin, V, Rubin, P, Sacco, R, Walker, A, Contalbrigo, M, Dalpiaz, P, Duclos, J, Frabetti, PL, Gianoli, A, Martini, M, Petrucci, F, Savrié, M, Bizzeti, A, Calvetti, M, Collazuol, G, Graziani, G, Iacopini, E, Lenti, M, Martelli, F, Veltri, M, Eppard, M, Hirstius, A, Holtz, K, Kleinknecht, K, Koch, U, Köpke, L, Lopes da Silva, P, Marouelli, P, Mestvirishvili, I, Pellmann, I, Peters, A, Schmidt, SA, Schönharting, V, Schué, Y, Wanke, R, Winhart, A, Wittgen, M, Chollet, JC, Fayard, L, Iconomidou-Fayard, L, Unal, G, Wingerter-Seez, I, Anzivino, G, Cenci, P, Imbergamo, E, Lubrano, P, Mestvirishvili, A, Nappi, A, Pepe, M, Piccini, M, Casali, R, Cerri, C, Cirilli, M, Costantini, F, Fantechi, R, Fiorini, L, Giudici, S, Mannelli, I, Pierazzini, G, Sozzi, M, Cheze, JB, De Beer, M, Debu, P, Derue, F, Formica, A, Granier de Cassagnac, R, Gouge, G, Marel, G, Mazzucato, E, Peyaud, B, Turlay, R, Vallage, B, Holder, M, Maier, A, Ziolkowski, M, Biino, C, Cartiglia, N, Marchetto, F, Menichetti, E, Pastrone, N, Nassalski, J, Rondio, E, Szleper, M, Wislicki, W, Wronka, S, Dibon, H, Jeitler, M, Markytan, M, Mikulec, I, Neuhofer, G, Pernicka, M, Taurok, A & Widhalm, L 2004, 'First observation of the K_S → π⁰γ γ decay', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 578, no. 3-4, pp. 276-284. https://doi.org/10.1016/j.physletb.2003.10.073

TY - JOUR

T1 - First observation of the KS → π0γ γ decay

AU - Lai, A.

AU - Marras, D.

AU - Batley, J. R.

AU - Dosanjh, R. S.

AU - Gershon, T. J.

AU - Kalmus, G. E.

AU - Lazzeroni, C.

AU - Munday, D. J.

AU - Olaiya, E.

AU - Parker, M. A.

AU - White, T. O.

AU - Wotton, S. A.

AU - Arcidiacono, R.

AU - Barr, G.

AU - Bocquet, G.

AU - Ceccucci, A.

AU - Cuhadar-Dönszelmann, T.

AU - Cundy, D.

AU - Doble, N.

AU - Falaleev, V.

AU - Gatignon, L.

AU - Gonidec, A.

AU - Gorini, B.

AU - Grafström, P.

AU - Kubischta, W.

AU - Lacourt, A.

AU - Norton, A.

AU - Panzer-Steindel, B.

AU - Tatishvili, G.

AU - Wahl, H.

AU - Cheshkov, C.

AU - Hristov, P.

AU - Kekelidze, V.

AU - Madigojine, D.

AU - Molokanova, N.

AU - Potrebenikov, Y.

AU - Zinchenko, A.

AU - Martin, V.

AU - Rubin, P.

AU - Sacco, R.

AU - Walker, A.

AU - Contalbrigo, M.

AU - Dalpiaz, P.

AU - Duclos, J.

AU - Frabetti, P. L.

AU - Gianoli, A.

AU - Martini, M.

AU - Petrucci, F.

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 - Veltri, M.

AU - Eppard, M.

AU - Hirstius, A.

AU - Holtz, K.

AU - Kleinknecht, K.

AU - Koch, U.

AU - Köpke, L.

AU - Lopes da Silva, P.

AU - Marouelli, P.

AU - Mestvirishvili, I.

AU - Pellmann, I.

AU - Peters, A.

AU - Schmidt, S. A.

AU - Schönharting, V.

AU - Schué, Y.

AU - Wanke, R.

AU - Winhart, A.

AU - Wittgen, M.

AU - Chollet, J. C.

AU - Fayard, L.

AU - Iconomidou-Fayard, L.

AU - Unal, G.

AU - Wingerter-Seez, I.

AU - Anzivino, G.

AU - Cenci, P.

AU - Imbergamo, E.

AU - Lubrano, P.

AU - Mestvirishvili, A.

AU - Nappi, A.

AU - Pepe, M.

AU - Piccini, M.

AU - Casali, R.

AU - Cerri, C.

AU - Cirilli, M.

AU - Costantini, F.

AU - Fantechi, R.

AU - Fiorini, L.

AU - Giudici, S.

AU - Mannelli, I.

AU - Pierazzini, G.

AU - Sozzi, M.

AU - Cheze, J. B.

AU - De Beer, M.

AU - Debu, P.

AU - Derue, F.

AU - Formica, A.

AU - Granier de Cassagnac, R.

AU - Gouge, G.

AU - Marel, G.

AU - Mazzucato, E.

AU - Peyaud, B.

AU - Turlay, R.

AU - Vallage, B.

AU - Holder, M.

AU - Maier, A.

AU - Ziolkowski, M.

AU - Biino, C.

AU - Cartiglia, N.

AU - Marchetto, F.

AU - Menichetti, E.

AU - Pastrone, N.

AU - Nassalski, J.

AU - Rondio, E.

AU - Szleper, M.

AU - Wislicki, W.

AU - Wronka, S.

AU - Dibon, H.

AU - Jeitler, M.

AU - Markytan, M.

AU - Mikulec, I.

AU - Neuhofer, G.

AU - Pernicka, M.

AU - Taurok, A.

AU - Widhalm, L.

PY - 2004/1/8

Y1 - 2004/1/8

N2 - Using the NA48 detector at the CERN SPS, 31 KS → π 0γγ candidates with an estimated background of 13.7 ± 3.2 events have been observed. This first observation leads to a branching ratio of BR(KS → π0γγ) z>0.2 = (4.9 ± 1.6stat ± 0.9 syst) × 10-8 in agreement with Chiral Perturbation Theory predictions.

AB - Using the NA48 detector at the CERN SPS, 31 KS → π 0γγ candidates with an estimated background of 13.7 ± 3.2 events have been observed. This first observation leads to a branching ratio of BR(KS → π0γγ) z>0.2 = (4.9 ± 1.6stat ± 0.9 syst) × 10-8 in agreement with Chiral Perturbation Theory predictions.

UR - https://www.scopus.com/pages/publications/0346785259

U2 - 10.1016/j.physletb.2003.10.073

DO - 10.1016/j.physletb.2003.10.073

M3 - Article

AN - SCOPUS:0346785259

SN - 0370-2693

VL - 578

SP - 276

EP - 284

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 - 3-4

ER -

First observation of the K_S → π⁰γ γ decay

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