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Searches for lepton number violation and resonances in $K^\pm \to \pi \mu \mu$ decays with the NA48/2 experiment

Authors :
N. A. Molokanova
K. Eppard
M. Wache
C. Cerri
A. Nappi
D. T. Madigozhin
E. M. Gersabeck
S. Venditti
E. Mazzucato
V. Kozhuharov
B. Bloch-Devaux
Peter Zahariev Hristov
N. Doble
M. De Beer
P. Cenci
Anne Dabrowski
M. Pepe
C. Morales Morales
Marco Clemencic
Vladimir Kekelidze
M. Sozzi
S. A. Wotton
M. Shieh
M. Holder
Andreas Alexander Maier
Simone Bifani
E. Iacopini
A. Michetti
C. Damiani
A. Gonidec
B. Vallage
L. DiLella
M. Behler
M. Scarpa
G. Bocquet
Mark Slater
Fabrizio Petrucci
H. D. Wahl
G. Collazuol
Giuseppe Ruggiero
Mayda Velasco
J. Derre
Leander Litov
Konrad Kleinknecht
M. Fidecaro
M. Patel
Jacqueline Batley
G.M. Pierazzini
P.L. Frabetti
B. Peyaud
A. Peters
F. Costantini
Cvetan Valeriev Cheshkov
Roberta Arcidiacono
Emmanuel Monnier
D. Coward
Rainer Wanke
P. Rubin
R. Fantechi
M. Valdata-Nappi
I. Mannelli
Alan W. Walker
P. F. Dalpiaz
G. E. Kalmus
F. Marchetto
Manfred Jeitler
Milene Calvetti
Michal Szleper
R. Marchevski
Nicola Cabibbo
I. Polenkevich
L. Widhalm
M. Ziolkowski
A. Gianoli
M. Savrie
M. D. Wood
Cristina Biino
A. Winhart
U. Moosbrugger
P. Marouelli
Ivan Mikulec
E. Imbergamo
H. Dibon
E. C. Swallow
G. Anzivino
Stoyan Stoynev
W. Kubischta
L. Masetti
L. Gatignon
A.I. Zinchenko
D. J. Munday
B. Renk
S. Giudici
Mauro Raggi
Yu Potrebenikov
G. Marel
S. Balev
M. Martini
G. Neuhofer
A. Ceccucci
A. Cotta Ramusino
Andrea Bizzeti
W. Baldini
D.C. Cundy
V. Falaleev
M. Veltri
J.B. Cheze
G. Lamanna
S. Goy Lopez
Luca Fiorini
A. Norton
Roland Winston
Nicolo Cartiglia
Evgueni Goudzovski
T. Fonseca Martin
Mauro Piccini
C. Lazzeroni
K. Massri
M. Markytan
M. Lenti
M. Fiorini
M. C. Petrucci
Publication Year :
2016
Publisher :
SISSA, 2016.

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. An upper limit of $8.6 \times 10^{-11}$ at 90~$\%$~CL is set on the branching ratio of the lepton number violating decay $K^\pm \rightarrow \pi^{\mp} \mu^{\pm} \mu^{\pm}$. Searches for two-body resonances like heavy neutral leptons and inflatons in the $K^\pm \rightarrow \pi \mu \mu$ decays in the accessible range of masses and lifetimes are also presented.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....2251d2f3dcdbf2055652060005360b45