000001045 001__ 1045
000001045 005__ 20180723141134.0
000001045 037__ $$aBELLE2-CONF-PROC-2018-012
000001045 041__ $$aeng
000001045 100__ $$aGiacomo De Pietro
000001045 245__ $$aFirst data at Belle II and Dark Sector physics
000001045 260__ $$a$$c2018-07-21
000001045 300__ $$amult. p
000001045 500__ $$aProceeding of "The International Conference on B-Physics at Frontier Machines - BEAUTY2018", held in La Biodola (Elba island, Italy) from May 6th to May 11th, 2018
000001045 520__ $$aBelle II is a major upgrade of the Belle experiment that operates at the $B$-factory SuperKEKB in Japan. Since SuperKEKB has a design luminosity of 8$\;\times\;$10$^{35}$ cm$^{-2}$s$^{-1}$, about 40 times larger that of KEKB, Belle II aims to collect $50$ ab$^{-1}$ of data over a period of 8 years. The first data taking runs for physics analyses have started in April 2018, with a lower luminosity than the designed one for commissioning purposes. Even with the early dataset (having an integrated luminosity up to 20 fb$^{-1}$), Belle II can improve the searches for Dark Sector candidates. In this paper we will present the expected sensitivity of Belle II for invisibly decaying Dark Photons, for Axion-Like Particles and for invisibly decaying $Z^{\prime}$ assuming a $L_{\mu}-L_{\tau}$ model.
000001045 8560_ $$fgiacomo.de.pietro@desy.de
000001045 8564_ $$uhttps://docs.belle2.org/record/1045/files/BELLE2-CONF-PROC-2018-012.pdf
000001045 8564_ $$uhttps://docs.belle2.org/record/1045/files/BELLE2-CONF-PROC-2018-012.gif?subformat=icon$$xicon
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