Search for Invisible Decays of a Light Scalar in Radiative Transitions Upsilon(3S) -> gamma A0
| dc.creator | The BaBar Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2008-07-31 | |
| dc.date.accessioned | 2026-07-07T09:54:12Z | |
| dc.date.available | 2026-07-07T09:54:12Z | |
| dc.description | We search for a light scalar particle produced in single-photon decays of the Upsilon(3S) resonance through the process Upsilon(3S) -> gamma A0, A0 -> invisible. Such an object appears in Next-to-Minimal Supersymmetric extensions of the Standard Model, where a light CP-odd Higgs boson naturally couples strongly to b-quarks. If, in addition, there exists a light, stable neutralino, decays of A0 could be preferentially to an invisible final state. We search for events with a single high-energy photon and a large missing mass, consistent with a 2-body decay of Upsilon(3S). We find no evidence for such processes in a sample of 122*10^6 Upsilon(3S) decays collected by the BABAR collaboration at the PEP-II B-factory, and set 90% C.L. upper limits on the branching fraction B(Upsilon(3S) -> gamma A0)*B(A0 -> invisible) at (0.7-31)*10^{-6} in the mass range m(A0)<=7.8 GeV. The results are preliminary. | |
| dc.description | 17 pages, 5 figures, contributed to ICHEP 08 | |
| dc.identifier | https://arxiv.org/abs/0808.0017 | |
| dc.identifier | http://arxiv.org/abs/0808.0017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/166229 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Search for Invisible Decays of a Light Scalar in Radiative Transitions Upsilon(3S) -> gamma A0 | |
| dc.type | text |