Search at the Mainz Microtron for Light Massive Gauge Bosons Relevant for the Muon g − 2 Anomaly (CROSBI ID 210228)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Merkel, H. ; Achenbach, P. ; Ayerbe Gayoso, C. ; Beranek, T. ; Beričič, J. ; Bernauer, J. C. ; Böhm, R. ; Bosnar, Damir ; Correa, L. ; Debenjak, L. ; Denig, A. ; Distler, M. O. ; Esser, A. ; Fonvieille, H. ; Friščić, Ivica ; Gómez Rodríguez de la Paz, M. ; Hoek, M. ; Kegel, S. ; Kohl, Y. ; Middleton, D. G. ; Mihovilovič, M. ; Müller, U. ; Nungesser, L. ; Pochodzalla, J. ; Rohrbeck, M. ; Ron, G. ; Sánchez Majos, S. ; Schlimme, B. S. ; Schoth, M. ; Schulz, F. ; Sfienti, C. ; Širca, S ; Thiel, M. ; Tyukin, A. ; Weber, A. ; Weinriefer, M.
engleski
Search at the Mainz Microtron for Light Massive Gauge Bosons Relevant for the Muon g − 2 Anomaly
A massive, but light, Abelian U(1) gauge boson is a well-motivated possible signature of physics beyond the standard model of particle physics. In this Letter, the search for the signal of such a U(1) gauge boson in electron-positron pair production at the spectrometer setup of the A1 Collaboration at the Mainz Microtron is described. Exclusion limits in the mass range of 40 MeV/c2 to 300 MeV/c2, with a sensitivity in the squared mixing parameter of as little as ε2=8×10−7 are presented. A large fraction of the parameter space has been excluded where the discrepancy of the measured anomalous magnetic moment of the muon with theory might be explained by an additional U(1) gauge boson.
dark photon; U(1)S
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Podaci o izdanju
112 (22)
2014.
221802-1-221802-5
objavljeno
0031-9007
10.1103/PhysRevLett.112.221802