000002068 001__ 2068
000002068 005__ 20200804143000.0
000002068 037__ $$aBELLE2-TALK-CONF-2020-040
000002068 041__ $$aeng
000002068 088__ $$aBELLE2-TALK-DRAFT-2020-042
000002068 100__ $$aFrancesco Tenchini
000002068 245__ $$aFirst results and prospects for tau LFV decay tau ->e + alpha(invisible) at Belle II 
000002068 260__ $$a40th International Conference on High Energy Physics$$c2020-07-28
000002068 300__ $$amult. p
000002068 520__ $$aThe Belle II experiment at SuperKEKB, an asymmetric e+e- collider, aims at a total integrated luminosity of 50 ab-1, to pursue a rich program of Standard Model and Beyond the Standard Model physics. In its first year of operation, approximately 10 fb-1 were collected at the Upsilon(4S) resonance, with about 100 fb-1 expected by the end of 2020. This results in a sizeable sample of tau pairs, enabling detailed studies of Standard and Beyond the Standard Model measurements, including searches for Lepton Flavor Violating (LFV) decays. One of the first channels where competitive limits are expected is the tau -> e + alpha(invisible) process, where alpha is a Goldstone boson. Here, the currently best limit has been obtained by ARGUS with an integrated luminosity of 475 pb-1. Belle II is expected to be able to improve on this result already with the data recorded. This contribution will discuss selected analysis details and present first preliminary results and the prospects for future larger datasets.
000002068 8560_ $$fdavid.jaffe@desy.de
000002068 8564_ $$uhttps://docs.belle2.org/record/2068/files/BELLE2-TALK-CONF-2020-040.pdf