Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in →SΛΛ decays based on a sample of 90×106(2S) and 110×106(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined (2S,3S)→SΛΛ branching fraction in the range (1.2-1.4)×10-7 are derived for mS<2.05 GeV. These bounds set stringent limits on the existence of such exotic particles.

Lees J.P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., et al. (2019). Search for a Stable Six-Quark State at BABAR. PHYSICAL REVIEW LETTERS, 122(7), 1-7 [10.1103/PhysRevLett.122.072002].

Search for a Stable Six-Quark State at BABAR

Patrignani C.;
2019

Abstract

Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in →SΛΛ decays based on a sample of 90×106(2S) and 110×106(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined (2S,3S)→SΛΛ branching fraction in the range (1.2-1.4)×10-7 are derived for mS<2.05 GeV. These bounds set stringent limits on the existence of such exotic particles.
2019
Lees J.P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., et al. (2019). Search for a Stable Six-Quark State at BABAR. PHYSICAL REVIEW LETTERS, 122(7), 1-7 [10.1103/PhysRevLett.122.072002].
Lees J.P.; Poireau V.; Tisserand V.; Grauges E.; Palano A.; Eigen G.; Brown D.N.; Kolomensky Yu.G.; Fritsch M.; Koch H.; Schroeder T.; Hearty C.; Matt...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/690896
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