We search for invisible decays of the Υ(1S) meson using a sample of 91.4×106 Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π+π−Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction ℬ(Υ(1S)→invisible)<3.0×10−4 at the 90% confidence level.

Aubert, B., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for Invisible Decays of the Upsilon(1S). PHYSICAL REVIEW LETTERS, 103(25), 1-7 [10.1103/PhysRevLett.103.251801].

Search for Invisible Decays of the Upsilon(1S)

PATRIGNANI, CLAUDIA;
2009

Abstract

We search for invisible decays of the Υ(1S) meson using a sample of 91.4×106 Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π+π−Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction ℬ(Υ(1S)→invisible)<3.0×10−4 at the 90% confidence level.
2009
Aubert, B., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for Invisible Decays of the Upsilon(1S). PHYSICAL REVIEW LETTERS, 103(25), 1-7 [10.1103/PhysRevLett.103.251801].
Aubert, B; Karyotakis, Y; Lees, Jp; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V; Tico, Jg; Grauges, E; Martinelli, M; Palano, A; Pappagallo, M; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/544837
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