Fisrt observation and study of K± → π±π0e+e− decay at the NA48/2 experiment

NA48/2 Collaboration

Fisrt observation and study of K^± → π^±π⁰e⁺e⁻ decay at the NA48/2 experiment

NA48/2 Collaboration

Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A sample of almost 2000 K^± → π^±π⁰e⁺e⁻ rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be BR(K^± → π^±π⁰e⁺e⁻) = (4.06 ± 0.17) × 10⁻⁶ by analyzing the data set recorded in 3-month NA48/2 run during 2003. The measured value is in agreement with the theoretical prediction within one standard deviation.

Original language	English (US)
Title of host publication	Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions
Editors	Etienne Auge, Jacques Dumarchez, Jean Tran Thanh Van
Publisher	ARISF
Pages	237-242
Number of pages	6
ISBN (Electronic)	9782954640075
State	Published - 2015
Event	50th Rencontres de Moriond on QCD and High Energy Interactions 2015 - La Thuile, Italy Duration: Mar 21 2015 → Mar 28 2015

Publication series

Name	Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions

Conference

Conference	50th Rencontres de Moriond on QCD and High Energy Interactions 2015
Country/Territory	Italy
City	La Thuile
Period	3/21/15 → 3/28/15

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Cite this

NA48/2 Collaboration. / Fisrt observation and study of K^± → π^±π⁰e⁺e⁻ decay at the NA48/2 experiment. Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions. editor / Etienne Auge ; Jacques Dumarchez ; Jean Tran Thanh Van. ARISF, 2015. pp. 237-242 (Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions).

@inproceedings{b35f98df785e4be6b1f8d45a1e63afd2,

title = "Fisrt observation and study of K± → π±π0e+e− decay at the NA48/2 experiment",

abstract = "A sample of almost 2000 K± → π±π0e+e− rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be BR(K± → π±π0e+e−) = (4.06 ± 0.17) × 10−6 by analyzing the data set recorded in 3-month NA48/2 run during 2003. The measured value is in agreement with the theoretical prediction within one standard deviation.",

author = "{NA48/2 Collaboration} and Misheva, {M. H.} and G. Anzivino and R. Arcidiacono and S. Balev and Batley, {J. R.} and M. Behler and S. Bifani and C. Biino and A. Bizzeti and B. Bloch-Devaux and G. Bocquet and N. Cabibbo and M. Calvetti and N. Cartiglia and A. Ceccucci and P. Cenci and C. Cerri and C. Cheshkov and Ch{\`e}ze, {J. B.} and M. Clemencic and G. Collazuol and F. Costantini and {Cotta Ramusino}, A. and D. Coward and D. Cundy and A. Dabrowski and P. Dalpiaz and C. Damiani and {de Beer}, M. and J. Derr{\'e} and H. Dibon and L. DiLella and N. Doble and K. Eppard and V. Falaleev and R. Fantechi and M. Fidecaro and L. Fiorini and M. Fiorini and {Fonseca Martin}, T. and Frabetti, {P. L.} and L. Gatignon and E. Gersabeck and A. Gianoli and S. Giudici and A. Gonidec and E. Goudzovski and {Goy Lopez}, S. and M. Holder and M. Velasco",

note = "Publisher Copyright: {\textcopyright} Published by ARISF, 2015; 50th Rencontres de Moriond on QCD and High Energy Interactions 2015 ; Conference date: 21-03-2015 Through 28-03-2015",

year = "2015",

language = "English (US)",

series = "Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions",

publisher = "ARISF",

pages = "237--242",

editor = "Etienne Auge and Jacques Dumarchez and {Tran Thanh Van}, Jean",

booktitle = "Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions",

}

NA48/2 Collaboration 2015, Fisrt observation and study of K^± → π^±π⁰e⁺e⁻ decay at the NA48/2 experiment. in E Auge, J Dumarchez & J Tran Thanh Van (eds), Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions. Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions, ARISF, pp. 237-242, 50th Rencontres de Moriond on QCD and High Energy Interactions 2015, La Thuile, Italy, 3/21/15.

Fisrt observation and study of K^± → π^±π⁰e⁺e⁻ decay at the NA48/2 experiment. / NA48/2 Collaboration.
Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions. ed. / Etienne Auge; Jacques Dumarchez; Jean Tran Thanh Van. ARISF, 2015. p. 237-242 (Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Fisrt observation and study of K± → π±π0e+e− decay at the NA48/2 experiment

AU - NA48/2 Collaboration

AU - Misheva, M. H.

AU - Anzivino, G.

AU - Arcidiacono, R.

AU - Balev, S.

AU - Batley, J. R.

AU - Behler, M.

AU - Bifani, S.

AU - Biino, C.

AU - Bizzeti, A.

AU - Bloch-Devaux, B.

AU - Bocquet, G.

AU - Cabibbo, N.

AU - Calvetti, M.

AU - Cartiglia, N.

AU - Ceccucci, A.

AU - Cenci, P.

AU - Cerri, C.

AU - Cheshkov, C.

AU - Chèze, J. B.

AU - Clemencic, M.

AU - Collazuol, G.

AU - Costantini, F.

AU - Cotta Ramusino, A.

AU - Coward, D.

AU - Cundy, D.

AU - Dabrowski, A.

AU - Dalpiaz, P.

AU - Damiani, C.

AU - de Beer, M.

AU - Derré, J.

AU - Dibon, H.

AU - DiLella, L.

AU - Doble, N.

AU - Eppard, K.

AU - Falaleev, V.

AU - Fantechi, R.

AU - Fidecaro, M.

AU - Fiorini, L.

AU - Fiorini, M.

AU - Fonseca Martin, T.

AU - Frabetti, P. L.

AU - Gatignon, L.

AU - Gersabeck, E.

AU - Gianoli, A.

AU - Giudici, S.

AU - Gonidec, A.

AU - Goudzovski, E.

AU - Goy Lopez, S.

AU - Holder, M.

AU - Velasco, M.

PY - 2015

Y1 - 2015

N2 - A sample of almost 2000 K± → π±π0e+e− rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be BR(K± → π±π0e+e−) = (4.06 ± 0.17) × 10−6 by analyzing the data set recorded in 3-month NA48/2 run during 2003. The measured value is in agreement with the theoretical prediction within one standard deviation.

AB - A sample of almost 2000 K± → π±π0e+e− rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be BR(K± → π±π0e+e−) = (4.06 ± 0.17) × 10−6 by analyzing the data set recorded in 3-month NA48/2 run during 2003. The measured value is in agreement with the theoretical prediction within one standard deviation.

UR - http://www.scopus.com/inward/record.url?scp=85090398438&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85090398438&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85090398438

T3 - Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions

SP - 237

EP - 242

BT - Proceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions

A2 - Auge, Etienne

A2 - Dumarchez, Jacques

A2 - Tran Thanh Van, Jean

PB - ARISF

T2 - 50th Rencontres de Moriond on QCD and High Energy Interactions 2015

Y2 - 21 March 2015 through 28 March 2015

ER -