Searches for lepton number violation and resonances in the K± → ΠΜΜ decays at the NA48/2 experiment

NA48/2 Collaboration

Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment

NA48/2 Collaboration

Physics and Astronomy

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

Abstract

The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K^± → π^∓μ^±μ^± obtained from this sample is reported: B(K^± → π^∓μ^±μ^±) < 8.6 × 10⁻¹¹ at 90% CL. Searches for two-body resonances in the K^± → πμμ decays (including heavy neutral leptons N4 and inflatons χ) in the accessible range of masses and lifetimes are also presented. In the absence of a signal, upper limits are set on the products of branching ratios B(K^± → μ^±N4)B(N4 → π^∓μ^±) and B(K^± → π^±χ)B(χ → μ⁺μ⁻) as functions of the resonance mass and lifetime. These limits are in the 10⁻¹⁰ − 10⁻⁹ range for resonance lifetimes below 100 ps.

Original language	English (US)
Title of host publication	Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016
Editors	Etienne Auge, Jacques Dumarchez, Jean Tron Thanh Van
Publisher	ARISF
Pages	109-116
Number of pages	8
ISBN (Electronic)	9782954640099
State	Published - 2016
Event	51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016 - La Thuile, Italy Duration: Mar 12 2016 → Mar 19 2016

Publication series

Name	Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016

Conference

Conference	51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016
Country/Territory	Italy
City	La Thuile
Period	3/12/16 → 3/19/16

ASJC Scopus subject areas

Astronomy and Astrophysics
Atomic and Molecular Physics, and Optics

Cite this

NA48/2 Collaboration (2016). Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment. In E. Auge, J. Dumarchez, & J. Tron Thanh Van (Eds.), Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016 (pp. 109-116). (Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016). ARISF.

NA48/2 Collaboration. / Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment. Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016. editor / Etienne Auge ; Jacques Dumarchez ; Jean Tron Thanh Van. ARISF, 2016. pp. 109-116 (Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016).

@inproceedings{aa9d8544c6a04688834790d6a50fa9d2,

title = "Searches for lepton number violation and resonances in the K± → ΠΜΜ decays at the NA48/2 experiment",

abstract = "The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K± → π∓μ±μ± obtained from this sample is reported: B(K± → π∓μ±μ±) < 8.6 × 10−11 at 90% CL. Searches for two-body resonances in the K± → πμμ decays (including heavy neutral leptons N4 and inflatons χ) in the accessible range of masses and lifetimes are also presented. In the absence of a signal, upper limits are set on the products of branching ratios B(K± → μ±N4)B(N4 → π∓μ±) and B(K± → π±χ)B(χ → μ+μ−) as functions of the resonance mass and lifetime. These limits are in the 10−10 − 10−9 range for resonance lifetimes below 100 ps.",

author = "{NA48/2 Collaboration} and K. Massri and G. Anzivino and R. Arcidiacono and W. Baldini 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. Velasco",

note = "Publisher Copyright: {\textcopyright} Published by ARISF, 2016.; 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016 ; Conference date: 12-03-2016 Through 19-03-2016",

year = "2016",

language = "English (US)",

series = "Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016",

publisher = "ARISF",

pages = "109--116",

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

booktitle = "Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016",

}

NA48/2 Collaboration 2016, Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment. in E Auge, J Dumarchez & J Tron Thanh Van (eds), Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016. Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016, ARISF, pp. 109-116, 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016, La Thuile, Italy, 3/12/16.

Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment. / NA48/2 Collaboration.

Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016. ed. / Etienne Auge; Jacques Dumarchez; Jean Tron Thanh Van. ARISF, 2016. p. 109-116 (Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016).

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

TY - GEN

T1 - Searches for lepton number violation and resonances in the K± → ΠΜΜ decays at the NA48/2 experiment

AU - NA48/2 Collaboration

AU - Massri, K.

AU - Anzivino, G.

AU - Arcidiacono, R.

AU - Baldini, W.

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 - Velasco, M.

PY - 2016

Y1 - 2016

N2 - The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K± → π∓μ±μ± obtained from this sample is reported: B(K± → π∓μ±μ±) < 8.6 × 10−11 at 90% CL. Searches for two-body resonances in the K± → πμμ decays (including heavy neutral leptons N4 and inflatons χ) in the accessible range of masses and lifetimes are also presented. In the absence of a signal, upper limits are set on the products of branching ratios B(K± → μ±N4)B(N4 → π∓μ±) and B(K± → π±χ)B(χ → μ+μ−) as functions of the resonance mass and lifetime. These limits are in the 10−10 − 10−9 range for resonance lifetimes below 100 ps.

AB - The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K± → π∓μ±μ± obtained from this sample is reported: B(K± → π∓μ±μ±) < 8.6 × 10−11 at 90% CL. Searches for two-body resonances in the K± → πμμ decays (including heavy neutral leptons N4 and inflatons χ) in the accessible range of masses and lifetimes are also presented. In the absence of a signal, upper limits are set on the products of branching ratios B(K± → μ±N4)B(N4 → π∓μ±) and B(K± → π±χ)B(χ → μ+μ−) as functions of the resonance mass and lifetime. These limits are in the 10−10 − 10−9 range for resonance lifetimes below 100 ps.

UR - http://www.scopus.com/inward/record.url?scp=85088934251&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85088934251&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85088934251

T3 - Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016

SP - 109

EP - 116

BT - Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016

A2 - Auge, Etienne

A2 - Dumarchez, Jacques

A2 - Tron Thanh Van, Jean

PB - ARISF

T2 - 51st Rencontres de Moriond on Electroweak Interactions and Unified Theories, EW 2016

Y2 - 12 March 2016 through 19 March 2016

ER -

NA48/2 Collaboration. Searches for lepton number violation and resonances in the K^± → ΠΜΜ decays at the NA48/2 experiment. In Auge E, Dumarchez J, Tron Thanh Van J, editors, Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016. ARISF. 2016. p. 109-116. (Proceedings of the 51st Rencontres de Moriond - 2016 Electroweak Interactions and Unified Theories, EW 2016).