20.500.12556/DKUM-85995 Search for ▫$Z^\prime \to \mu^+ \mu^-$▫ in the ▫$L_\mu - L_\tau$▫ gauge-symmetric model at Belle We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutrinos in the process e+e−→Z′(→μ+μ−)μ+μ−, using a 643  fb−1 data sample collected by the Belle experiment at or near the Υ(1S,2S,3S,4S,5S) resonances at the KEKB collider. While previous searches for Z′ performed a data-based estimation of the initial state radiation effect, our search for the Z′ is the first to include effects due to initial state radiation in the signal simulated samples that were used in estimating the detection efficiency. No signal is observed in the Z′ mass range of 0.212–10  GeV/c2, and we set an upper limit on the coupling strength, g′, constraining the possible Z′ contribution to the anomalous magnetic dipole moment of the muon. Extensions of gauge sector leptonic semileptonic & radiative decays leptonski razpadi semileptonski razpadi radiacijski razpadi true false true APS Angleški jezik Slovenski jezik Znanstveno delo 2023-09-25 14:45:23 2023-09-25 14:45:23 2023-09-26 03:10:28 0000-00-00 00:00:00 2022 0 0 str. 012003-1-012003-10 Št. 1 Letn. 106 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2021-09-20 2022-06-28 2022-07-08 539.1 142209539 10.1103/PhysRevD.106.012003 2470-0010 Search_for_Z__-__mu(+)mu(-)_in_the-Czank-2022.pdf Search_for_Z__-__mu(+)mu(-)_in_the-Czank-2022.pdf 1 CB77FE16A79EC6462C120C8E46EE0836 10210b261f0901e12b60bbfb90bb95afa041fc20ba6b3dbb44a3b61e929aba91 8a52ece4-5ba2-11ee-ac19-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=172936 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.106.012003 0 a3bd5958-5ba2-11ee-ac19-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=172938 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0