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Search for dark Higgsstrahlung in e+ e- -> mu+ mu- and missing energy events with the KLOE experiment

Authors :
M. Berlowski
M. Silarski
S. Miscetti
W. Krzemien
M. Mascolo
S. Fiore
A. Fantini
R. Di Salvo
L. Tortora
E. Perez del Rio
G. Morello
P. De Simone
F. Sirghi
P. Branchini
Andrzej Kupsc
A. D'Uffizi
Aleksander Gajos
Magnus Wolke
P. Gauzzi
A. Palladino
Eryk Czerwiński
I. Sarra
G. Felici
P. Ciambrone
S. Loffredo
R. Messi
G. D'Agostini
L. Caldeira Balkeståhl
A. Passeri
D. Babusci
W. Ikegami Andersson
D. Moricciani
A. Anastasi
A. Di Cicco
F. Curciarello
T. Johansson
D. Domenici
G. Giardina
W. Wiślicki
G. Bencivenni
F. Bossi
A. De Santis
S. Giovannella
G. Venanzoni
P. Santangelo
M. Schioppa
V. De Leo
Lena Heijkenskjöld
Paweł Moskal
E. Dane
E. Graziani
Daria Kamińska
M. Martini
A. Di Domenico
F. Nguyen
A. Budano
B. Cao
C. Bloise
F. Ceradini
V. Patera
A. Ranieri
E. De Lucia
F. Happacher
Giuseppe Mandaglio
Nguyen, F.
Anastasi, A
Ceradini, Filippo
DI CICCO, Alessandro
Loffredo, Salvatore
Source :
Physics Letters B, Vol 747, Iss C, Pp 365-372 (2015), Physics Letters
Publication Year :
2015

Abstract

We searched for evidence of a Higgsstrahlung process in a secluded sector, leading to a final state with a dark photon U and a dark Higgs boson h', with the KLOE detector at DAFNE. We investigated the case of h' lighter than U, with U decaying into a muon pair and h' producing a missing energy signature. We found no evidence of the process and set upper limits to its parameters in the range 2m_mu<br />Comment: 16 pages, 7 figures, submitted to Physics Letters B

Details

Language :
English
Database :
OpenAIRE
Journal :
Physics Letters B, Vol 747, Iss C, Pp 365-372 (2015), Physics Letters
Accession number :
edsair.doi.dedup.....16c1109b47084f633407321a63b257e5