First observation and measurement of the decay K± → π± e+ e- γ

J. R. Batley; A. J. Culling; G. Kalmus; C. Lazzeroni; D. J. Munday; M. W. Slater; S. A. Wotton; R. Arcidiacono; G. Bocquet; N. Cabibbo; A. Ceccucci; D. Cundy; V. Falaleev; M. Fidecaro; L. Gatignon; A. Gonidec; W. Kubischta; A. Norton; A. Maier; M. Patel; A. Peters; S. Balev; P. L. Frabetti; E. Goudzovski; P. Hristov; V. Kekelidze; V. Kozhuharov; L. Litov; D. Madigozhin; E. Marinova; N. Molokanova; I. Polenkevich; Yu Potrebenikov; S. Stoynev; A. Zinchenko; E. Monnier; E. Swallow; R. Winston; P. Rubin; A. Walker; W. Baldini; A. Cotta Ramusino; P. Dalpiaz; C. Damiani; M. Fiorini; A. Gianoli; M. Martini; F. Petrucci; M. Savrié; M. Scarpa; H. Wahl; A. Bizzeti; M. Calvetti; E. Celeghini; E. Iacopini; M. Lenti; F. Martelli; G. Ruggiero; M. Veltri; M. Behler; K. Eppard; C. Handel; K. Kleinknecht; P. Marouelli; L. Masetti; U. Moosbrugger; C. Morales Morales; B. Renk; M. Wache; R. Wanke; A. Winhart; D. Coward; A. Dabrowski; T. Fonseca Martin; M. Shieh; M. Szleper; M. Velasco; M. D. Wood; G. Anzivino; P. Cenci; E. Imbergamo; A. Nappi; M. Pepe; M. C. Petrucci; M. Piccini; M. Raggi; M. Valdata-Nappi; C. Cerri; G. Collazuol; F. Costantini; L. DiLella; N. Doble; R. Fantechi; L. Fiorini; S. Giudici; G. Lamanna; I. Mannelli; A. Michetti; G. Pierazzini; M. Sozzi; B. Bloch-Devaux; C. Cheshkov; J. B. Chèze; M. De Beer; J. Derré; G. Marel; E. Mazzucato; B. Peyaud; B. Vallage; M. Holder; M. Ziolkowski; S. Bifani; C. Biino; N. Cartiglia; M. Clemencic; S. Goy Lopez; F. Marchetto; H. Dibon; M. Jeitler; M. Markytan; I. Mikulec; G. Neuhofer; L. Widhalm

doi:10.1016/j.physletb.2007.11.075

First observation and measurement of the decay K^± → π^± e⁺ e^- γ

J. R. Batley
, A. J. Culling
, G. Kalmus
, C. Lazzeroni
, D. J. Munday
, M. W. Slater
, S. A. Wotton
, R. Arcidiacono
, G. Bocquet
, N. Cabibbo
, A. Ceccucci
, D. Cundy
, V. Falaleev
, M. Fidecaro
, L. Gatignon
, A. Gonidec
, W. Kubischta
, A. Norton
, A. Maier
, M. Patel

A. Peters, S. Balev, P. L. Frabetti, E. Goudzovski, P. Hristov, V. Kekelidze, V. Kozhuharov, L. Litov, D. Madigozhin, E. Marinova, N. Molokanova, I. Polenkevich, Yu Potrebenikov, S. Stoynev, A. Zinchenko, E. Monnier, E. Swallow, R. Winston, P. Rubin, A. Walker, W. Baldini, A. Cotta Ramusino, P. Dalpiaz, C. Damiani, M. Fiorini, A. Gianoli, M. Martini, F. Petrucci, M. Savrié, M. Scarpa, H. Wahl, A. Bizzeti, M. Calvetti, E. Celeghini, E. Iacopini, M. Lenti, F. Martelli, G. Ruggiero, M. Veltri, M. Behler, K. Eppard, C. Handel, K. Kleinknecht, P. Marouelli, L. Masetti, U. Moosbrugger, C. Morales Morales, B. Renk, M. Wache, R. Wanke, A. Winhart, D. Coward, A. Dabrowski, T. Fonseca Martin, M. Shieh, M. Szleper, M. Velasco, M. D. Wood, G. Anzivino, P. Cenci, E. Imbergamo, A. Nappi, M. Pepe, M. C. Petrucci, M. Piccini, M. Raggi, M. Valdata-Nappi, C. Cerri, G. Collazuol, F. Costantini, L. DiLella, N. Doble, R. Fantechi, L. Fiorini, S. Giudici, G. Lamanna, I. Mannelli, A. Michetti, G. Pierazzini, M. Sozzi, B. Bloch-Devaux, C. Cheshkov, J. B. Chèze, M. De Beer, J. Derré, G. Marel, E. Mazzucato, B. Peyaud, B. Vallage, M. Holder, M. Ziolkowski, S. Bifani, C. Biino, N. Cartiglia, M. Clemencic, S. Goy Lopez, F. Marchetto, H. Dibon, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer, L. Widhalm

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

Abstract

Using the full data set of the NA48/2 experiment, the decay K^± → π^± e⁺ e^- γ is observed for the first time, selecting 120 candidates with 7.3 ± 1.7 estimated background events. With K^± → π^± π_D⁰ as normalisation channel, the branching ratio is determined in a model-independent way to be Br (K^± → π^± e⁺ e^- γ, m_{e e γ} > 260 MeV / c²) = (1.19 ± 0.12_stat ± 0.04_syst) × 10^-8. This measured value and the spectrum of the e⁺ e^- γ invariant mass allow a comparison with predictions of chiral perturbation theory.

Original language	English
Pages (from-to)	493-499
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	659
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2007.11.075
Publication status	Published - 24 Jan 2008
Externally published	Yes

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10.1016/j.physletb.2007.11.075

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Batley, J. R., Culling, A. J., Kalmus, G., Lazzeroni, C., Munday, D. J., Slater, M. W., Wotton, S. A., Arcidiacono, R., Bocquet, G., Cabibbo, N., Ceccucci, A., Cundy, D., Falaleev, V., Fidecaro, M., Gatignon, L., Gonidec, A., Kubischta, W., Norton, A., Maier, A., ... Widhalm, L. (2008). First observation and measurement of the decay K^± → π^± e⁺ e^- γ. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 659(3), 493-499. https://doi.org/10.1016/j.physletb.2007.11.075

@article{b07f80817757445080931fa9c0588200,

title = "First observation and measurement of the decay K± → π± e+ e- γ",

abstract = "Using the full data set of the NA48/2 experiment, the decay K± → π± e+ e- γ is observed for the first time, selecting 120 candidates with 7.3 ± 1.7 estimated background events. With K± → π± πD0 as normalisation channel, the branching ratio is determined in a model-independent way to be Br (K± → π± e+ e- γ, me e γ > 260 MeV / c2) = (1.19 ± 0.12stat ± 0.04syst) × 10-8. This measured value and the spectrum of the e+ e- γ invariant mass allow a comparison with predictions of chiral perturbation theory.",

author = "Batley, \{J. R.\} and Culling, \{A. J.\} and G. Kalmus and C. Lazzeroni and Munday, \{D. J.\} and Slater, \{M. W.\} and Wotton, \{S. A.\} and R. Arcidiacono and G. Bocquet and N. Cabibbo and A. Ceccucci and D. Cundy and V. Falaleev and M. Fidecaro and L. Gatignon and A. Gonidec and W. Kubischta and A. Norton and A. Maier and M. Patel and A. Peters and S. Balev and Frabetti, \{P. L.\} and E. Goudzovski and P. Hristov and V. Kekelidze and V. Kozhuharov and L. Litov and D. Madigozhin and E. Marinova and N. Molokanova and I. Polenkevich and Yu Potrebenikov and S. Stoynev and A. Zinchenko and E. Monnier and E. Swallow and R. Winston and P. Rubin and A. Walker and W. Baldini and Ramusino, \{A. Cotta\} and P. Dalpiaz and C. Damiani and M. Fiorini and A. Gianoli and M. Martini and F. Petrucci and M. Savri{\'e} and M. Scarpa and H. Wahl and A. Bizzeti and M. Calvetti and E. Celeghini and E. Iacopini and M. Lenti and F. Martelli and G. Ruggiero and M. Veltri and M. Behler and K. Eppard and C. Handel and K. Kleinknecht and P. Marouelli and L. Masetti and U. Moosbrugger and \{Morales Morales\}, C. and B. Renk and M. Wache and R. Wanke and A. Winhart and D. Coward and A. Dabrowski and \{Fonseca Martin\}, T. and M. Shieh and M. Szleper and M. Velasco and Wood, \{M. D.\} and G. Anzivino and P. Cenci and E. Imbergamo and A. Nappi and M. Pepe and Petrucci, \{M. C.\} and M. Piccini and M. Raggi and M. Valdata-Nappi and C. Cerri and G. Collazuol and F. Costantini and L. DiLella and N. Doble and R. Fantechi and L. Fiorini and S. Giudici and G. Lamanna and I. Mannelli and A. Michetti and G. Pierazzini and M. Sozzi and B. Bloch-Devaux and C. Cheshkov and Ch{\`e}ze, \{J. B.\} and \{De Beer\}, M. and J. Derr{\'e} and G. Marel and E. Mazzucato and B. Peyaud and B. Vallage and M. Holder and M. Ziolkowski and S. Bifani and C. Biino and N. Cartiglia and M. Clemencic and Lopez, \{S. Goy\} and F. Marchetto and H. Dibon and M. Jeitler and M. Markytan and I. Mikulec and G. Neuhofer and L. Widhalm",

year = "2008",

month = jan,

day = "24",

doi = "10.1016/j.physletb.2007.11.075",

language = "English",

volume = "659",

pages = "493--499",

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

issn = "0370-2693",

publisher = "Elsevier BV",

number = "3",

}

Batley, JR, Culling, AJ, Kalmus, G, Lazzeroni, C, Munday, DJ, Slater, MW, Wotton, SA, Arcidiacono, R, Bocquet, G, Cabibbo, N, Ceccucci, A, Cundy, D, Falaleev, V, Fidecaro, M, Gatignon, L, Gonidec, A, Kubischta, W, Norton, A, Maier, A, Patel, M, Peters, A, Balev, S, Frabetti, PL, Goudzovski, E, Hristov, P, Kekelidze, V, Kozhuharov, V, Litov, L, Madigozhin, D, Marinova, E, Molokanova, N, Polenkevich, I, Potrebenikov, Y, Stoynev, S, Zinchenko, A, Monnier, E, Swallow, E, Winston, R, Rubin, P, Walker, A, Baldini, W, Ramusino, AC, Dalpiaz, P, Damiani, C, Fiorini, M, Gianoli, A, Martini, M, Petrucci, F, Savrié, M, Scarpa, M, Wahl, H, Bizzeti, A, Calvetti, M, Celeghini, E, Iacopini, E, Lenti, M, Martelli, F, Ruggiero, G, Veltri, M, Behler, M, Eppard, K, Handel, C, Kleinknecht, K, Marouelli, P, Masetti, L, Moosbrugger, U, Morales Morales, C, Renk, B, Wache, M, Wanke, R, Winhart, A, Coward, D, Dabrowski, A, Fonseca Martin, T, Shieh, M, Szleper, M, Velasco, M, Wood, MD, Anzivino, G, Cenci, P, Imbergamo, E, Nappi, A, Pepe, M, Petrucci, MC, Piccini, M, Raggi, M, Valdata-Nappi, M, Cerri, C, Collazuol, G, Costantini, F, DiLella, L, Doble, N, Fantechi, R, Fiorini, L, Giudici, S, Lamanna, G, Mannelli, I, Michetti, A, Pierazzini, G, Sozzi, M, Bloch-Devaux, B, Cheshkov, C, Chèze, JB, De Beer, M, Derré, J, Marel, G, Mazzucato, E, Peyaud, B, Vallage, B, Holder, M, Ziolkowski, M, Bifani, S, Biino, C, Cartiglia, N, Clemencic, M, Lopez, SG, Marchetto, F, Dibon, H, Jeitler, M, Markytan, M, Mikulec, I, Neuhofer, G & Widhalm, L 2008, 'First observation and measurement of the decay K^± → π^± e⁺ e^- γ', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 659, no. 3, pp. 493-499. https://doi.org/10.1016/j.physletb.2007.11.075

TY - JOUR

T1 - First observation and measurement of the decay K± → π± e+ e- γ

AU - Batley, J. R.

AU - Culling, A. J.

AU - Kalmus, G.

AU - Lazzeroni, C.

AU - Munday, D. J.

AU - Slater, M. W.

AU - Wotton, S. A.

AU - Arcidiacono, R.

AU - Bocquet, G.

AU - Cabibbo, N.

AU - Ceccucci, A.

AU - Cundy, D.

AU - Falaleev, V.

AU - Fidecaro, M.

AU - Gatignon, L.

AU - Gonidec, A.

AU - Kubischta, W.

AU - Norton, A.

AU - Maier, A.

AU - Patel, M.

AU - Peters, A.

AU - Balev, S.

AU - Frabetti, P. L.

AU - Goudzovski, E.

AU - Hristov, P.

AU - Kekelidze, V.

AU - Kozhuharov, V.

AU - Litov, L.

AU - Madigozhin, D.

AU - Marinova, E.

AU - Molokanova, N.

AU - Polenkevich, I.

AU - Potrebenikov, Yu

AU - Stoynev, S.

AU - Zinchenko, A.

AU - Monnier, E.

AU - Swallow, E.

AU - Winston, R.

AU - Rubin, P.

AU - Walker, A.

AU - Baldini, W.

AU - Ramusino, A. Cotta

AU - Dalpiaz, P.

AU - Damiani, C.

AU - Fiorini, M.

AU - Gianoli, A.

AU - Martini, M.

AU - Petrucci, F.

AU - Savrié, M.

AU - Scarpa, M.

AU - Wahl, H.

AU - Bizzeti, A.

AU - Calvetti, M.

AU - Celeghini, E.

AU - Iacopini, E.

AU - Lenti, M.

AU - Martelli, F.

AU - Ruggiero, G.

AU - Veltri, M.

AU - Behler, M.

AU - Eppard, K.

AU - Handel, C.

AU - Kleinknecht, K.

AU - Marouelli, P.

AU - Masetti, L.

AU - Moosbrugger, U.

AU - Morales Morales, C.

AU - Renk, B.

AU - Wache, M.

AU - Wanke, R.

AU - Winhart, A.

AU - Coward, D.

AU - Dabrowski, A.

AU - Fonseca Martin, T.

AU - Shieh, M.

AU - Szleper, M.

AU - Velasco, M.

AU - Wood, M. D.

AU - Anzivino, G.

AU - Cenci, P.

AU - Imbergamo, E.

AU - Nappi, A.

AU - Pepe, M.

AU - Petrucci, M. C.

AU - Piccini, M.

AU - Raggi, M.

AU - Valdata-Nappi, M.

AU - Cerri, C.

AU - Collazuol, G.

AU - Costantini, F.

AU - DiLella, L.

AU - Doble, N.

AU - Fantechi, R.

AU - Fiorini, L.

AU - Giudici, S.

AU - Lamanna, G.

AU - Mannelli, I.

AU - Michetti, A.

AU - Pierazzini, G.

AU - Sozzi, M.

AU - Bloch-Devaux, B.

AU - Cheshkov, C.

AU - Chèze, J. B.

AU - De Beer, M.

AU - Derré, J.

AU - Marel, G.

AU - Mazzucato, E.

AU - Peyaud, B.

AU - Vallage, B.

AU - Holder, M.

AU - Ziolkowski, M.

AU - Bifani, S.

AU - Biino, C.

AU - Cartiglia, N.

AU - Clemencic, M.

AU - Lopez, S. Goy

AU - Marchetto, F.

AU - Dibon, H.

AU - Jeitler, M.

AU - Markytan, M.

AU - Mikulec, I.

AU - Neuhofer, G.

AU - Widhalm, L.

PY - 2008/1/24

Y1 - 2008/1/24

N2 - Using the full data set of the NA48/2 experiment, the decay K± → π± e+ e- γ is observed for the first time, selecting 120 candidates with 7.3 ± 1.7 estimated background events. With K± → π± πD0 as normalisation channel, the branching ratio is determined in a model-independent way to be Br (K± → π± e+ e- γ, me e γ > 260 MeV / c2) = (1.19 ± 0.12stat ± 0.04syst) × 10-8. This measured value and the spectrum of the e+ e- γ invariant mass allow a comparison with predictions of chiral perturbation theory.

AB - Using the full data set of the NA48/2 experiment, the decay K± → π± e+ e- γ is observed for the first time, selecting 120 candidates with 7.3 ± 1.7 estimated background events. With K± → π± πD0 as normalisation channel, the branching ratio is determined in a model-independent way to be Br (K± → π± e+ e- γ, me e γ > 260 MeV / c2) = (1.19 ± 0.12stat ± 0.04syst) × 10-8. This measured value and the spectrum of the e+ e- γ invariant mass allow a comparison with predictions of chiral perturbation theory.

UR - https://www.scopus.com/pages/publications/37549055841

U2 - 10.1016/j.physletb.2007.11.075

DO - 10.1016/j.physletb.2007.11.075

M3 - Article

SN - 0370-2693

VL - 659

SP - 493

EP - 499

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

ER -

First observation and measurement of the decay K^± → π^± e⁺ e^- γ

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