Abstract
We present a measurement of the branching fraction of invisible Υ(1S) decays, using 1.2fb-1 of data collected at the Υ(2S) resonance with the CLEO III detector at CESR. After subtracting expected backgrounds from events that pass selection criteria for invisible Υ(1S) decay in Υ(2S)→π+π-Υ(1S), we deduce a 90% C.L. upper limit of B[Υ(1S)→invisible]<0.39%. © 2007 The American Physical Society.
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CITATION STYLE
APA
Rubin, P., Cawlfield, C., Eisenstein, B. I., Karliner, I., Kim, D., Lowrey, N., … Yelton, J. (2007). Search for invisible decays of the Υ(1S) resonance. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(3). https://doi.org/10.1103/PhysRevD.75.031104
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