Search for light vector boson production in e^+e^- rightarrow μ^+ μ^- γ interactions with the KLOE experiment

D. Babusci , I. Balwierz-Pytko , G. Bencivenni , C. Bloise , F. Bossi , P. Branchini , A. Budano , L. Caldeira Balkest\r{a}hl

show 61 more authors

F. Ceradini P. Ciambrone F. Curciarello E. Czerwinski E. Dan\`e V. De Leo E. De Lucia G. De Robertis A. De Santis P. De Simone A. Di Cicco A. Di Domenico R. Di Salvo D. Domenici O. Erriquez G. Fanizzi A. Fantini G. Felici S. Fiore P. Franzini A. Gajos P. Gauzzi G. Giardina S. Giovannella E. Graziani F. Happacher L. Heijkenskjold B. Hoistad T. Johansson K. Kacprzak D. Kaminska W. Krzemien A. Kupsc J. Lee-Franzini F. Loddo S. Loffredo G. Mandaglio M. Martemianov M. Martini M. Mascolo R. Messi S. Miscetti G. Morello D. Moricciani P. Moskal F. Nguyen A. Palladino A. Passeri V. Patera I. Prado Longhi A. Ranieri P. Santangelo I. Sarra M. Schioppa B. Sciascia M. Silarski L. Tortora G. Venanzoni W. Wislicki M. Wolke J. Zdebik (KLOE-2 Collaboration)

Authors on Pith no claims yet

classification ✦ hep-ex

keywords bosonvectordarkevidencekloelightmasstimes

0 comments

read the original abstract

We have searched for a light vector boson $U$, the possible carrier of a "dark force", with the KLOE detector at the DA$\Phi$NE \epm\ collider, motivated by astrophysical evidence for the presence of dark matter in the universe. Using \epm\ collisions collected with an integrated luminosity of $239.3$~pb$^{-1}$, we look for a dimuon mass peak in the reaction \epm\to$\mu^+ \mu^-$\gam, corresponding to the decay $U\to\mu^+\mu^-$. We find no evidence for a $U$ vector boson signal. We set a 90\% CL upper limit for the mixing parameter squared between the photon and the $U$ boson of 1.6$\times$10$^{-5}$ to 8.6$\times$10$^{-7}$ for the mass region $520<m_{\rm U}<980$ MeV.

This paper has not been read by Pith yet.

Search for light vector boson production in e^+e^- rightarrow μ^+ μ^- γ interactions with the KLOE experiment

discussion (0)