Precise measurement of the K ± → π ± e + e - decay

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; 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; R. Fantechi; G. Collazuol; L. DiLella; G. Lamanna; I. Mannelli; A. Michetti; F. Costantini; N. Doble; L. Fiorini; S. Giudici; G. Pierazzini; M. Sozzi; S. Venditti; 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.2009.05.040

Precise measurement of the K ^± → π ^± e ⁺ e ^- decay

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. PatelA. 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, 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, R. Fantechi, G. Collazuol, L. DiLella, G. Lamanna, I. Mannelli, A. Michetti, F. Costantini, N. Doble, L. Fiorini, S. Giudici, G. Pierazzini, M. Sozzi, S. Venditti, 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

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Physics and Astronomy

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Abstract

A sample of 7253 K ^± → π ^± e ⁺ e ^- (γ) decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, which allowed a precise measurement of the decay properties. The branching ratio in the full kinematic range was measured to be BR = (3.11 ± 0.12) × 10 ^{- 7}, where the uncertainty includes also the model dependence. The shape of the form factor W (z), where z = (M _{e e} / M _K) ², was parameterized according to several models, and, in particular, the slope δ of the linear form factor W (z) = W ₀ (1 + δ z) was determined to be δ = 2.32 ± 0.18. A possible CP violating asymmetry of K ⁺ and K ^- decay widths was investigated, and a conservative upper limit of 2.1 × 10 ^{- 2} at 90% CL was established.

Original language	English (US)
Pages (from-to)	246-254
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	677
Issue number	5
DOIs	https://doi.org/10.1016/j.physletb.2009.05.040
State	Published - Jun 29 2009

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2009.05.040

Cite this

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. (2009). Precise measurement of the K ^± → π ^± e ⁺ e ^- decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 677(5), 246-254. https://doi.org/10.1016/j.physletb.2009.05.040

@article{f38f0fd331eb4f04b45cb02682c44392,

title = "Precise measurement of the K ± → π ± e + e - decay",

abstract = "A sample of 7253 K ± → π ± e + e - (γ) decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, which allowed a precise measurement of the decay properties. The branching ratio in the full kinematic range was measured to be BR = (3.11 ± 0.12) × 10 - 7, where the uncertainty includes also the model dependence. The shape of the form factor W (z), where z = (M e e / M K) 2, was parameterized according to several models, and, in particular, the slope δ of the linear form factor W (z) = W 0 (1 + δ z) was determined to be δ = 2.32 ± 0.18. A possible CP violating asymmetry of K + and K - decay widths was investigated, and a conservative upper limit of 2.1 × 10 - 2 at 90% CL was established.",

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 K. Kleinknecht and P. Marouelli and L. Masetti and U. Moosbrugger and Morales, {C. Morales} and B. Renk and M. Wache and R. Wanke and A. Winhart and D. Coward and A. Dabrowski and Martin, {T. Fonseca} 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 R. Fantechi and G. Collazuol and L. DiLella and G. Lamanna and I. Mannelli and A. Michetti and F. Costantini and N. Doble and L. Fiorini and S. Giudici and G. Pierazzini and M. Sozzi and S. Venditti 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 = "2009",

month = jun,

day = "29",

doi = "10.1016/j.physletb.2009.05.040",

language = "English (US)",

volume = "677",

pages = "246--254",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "5",

}

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, Kleinknecht, K, Marouelli, P, Masetti, L, Moosbrugger, U, Morales, CM, Renk, B, Wache, M, Wanke, R, Winhart, A, Coward, D, Dabrowski, A, Martin, TF, 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, Fantechi, R, Collazuol, G, DiLella, L, Lamanna, G, Mannelli, I, Michetti, A, Costantini, F, Doble, N, Fiorini, L, Giudici, S, Pierazzini, G, Sozzi, M, Venditti, S, 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 2009, 'Precise measurement of the K ^± → π ^± e ⁺ e ^- decay', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 677, no. 5, pp. 246-254. https://doi.org/10.1016/j.physletb.2009.05.040

TY - JOUR

T1 - Precise measurement of the K ± → π ± e + e - decay

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 - Kleinknecht, K.

AU - Marouelli, P.

AU - Masetti, L.

AU - Moosbrugger, U.

AU - Morales, C. Morales

AU - Renk, B.

AU - Wache, M.

AU - Wanke, R.

AU - Winhart, A.

AU - Coward, D.

AU - Dabrowski, A.

AU - Martin, T. Fonseca

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 - Fantechi, R.

AU - Collazuol, G.

AU - DiLella, L.

AU - Lamanna, G.

AU - Mannelli, I.

AU - Michetti, A.

AU - Costantini, F.

AU - Doble, N.

AU - Fiorini, L.

AU - Giudici, S.

AU - Pierazzini, G.

AU - Sozzi, M.

AU - Venditti, S.

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 - 2009/6/29

Y1 - 2009/6/29

N2 - A sample of 7253 K ± → π ± e + e - (γ) decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, which allowed a precise measurement of the decay properties. The branching ratio in the full kinematic range was measured to be BR = (3.11 ± 0.12) × 10 - 7, where the uncertainty includes also the model dependence. The shape of the form factor W (z), where z = (M e e / M K) 2, was parameterized according to several models, and, in particular, the slope δ of the linear form factor W (z) = W 0 (1 + δ z) was determined to be δ = 2.32 ± 0.18. A possible CP violating asymmetry of K + and K - decay widths was investigated, and a conservative upper limit of 2.1 × 10 - 2 at 90% CL was established.

AB - A sample of 7253 K ± → π ± e + e - (γ) decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, which allowed a precise measurement of the decay properties. The branching ratio in the full kinematic range was measured to be BR = (3.11 ± 0.12) × 10 - 7, where the uncertainty includes also the model dependence. The shape of the form factor W (z), where z = (M e e / M K) 2, was parameterized according to several models, and, in particular, the slope δ of the linear form factor W (z) = W 0 (1 + δ z) was determined to be δ = 2.32 ± 0.18. A possible CP violating asymmetry of K + and K - decay widths was investigated, and a conservative upper limit of 2.1 × 10 - 2 at 90% CL was established.

UR - http://www.scopus.com/inward/record.url?scp=67249119436&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67249119436&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.05.040

DO - 10.1016/j.physletb.2009.05.040

M3 - Article

AN - SCOPUS:67249119436

SN - 0370-2693

VL - 677

SP - 246

EP - 254

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 - 5

ER -

Precise measurement of the K ^± → π ^± e ⁺ e ^- decay

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Precise measurement of the K+- --> pi+-e+e- decay

Precise measurement of the K+- --> pi+-e+e- decay

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Precise measurement of the K ± → π ± e + e - decay

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ASJC Scopus subject areas

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Precise measurement of the K+- --&gt; pi+-e+e- decay

Precise measurement of the K+- --&gt; pi+-e+e- decay

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Precise measurement of the K ^± → π ^± e ⁺ e ^- decay

Precise measurement of the K+- --> pi+-e+e- decay

Precise measurement of the K+- --> pi+-e+e- decay