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Search for the decay tau(-->)4 pi(-)3 pi(+)(pi(0))nu(tau)
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BABAR Collaboration (Including: UNSPECIFIED). (2005) Search for the decay tau(-->)4 pi(-)3 pi(+)(pi(0))nu(tau). PHYSICAL REVIEW D, 72 (1). -. ISSN 1550-7998
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Official URL: http://dx.doi.org/10.1103/PhysRevD.72.012003
Abstract
A search for the decay of the tau lepton to seven charged pions and one or zero pi(0) mesons was performed using the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider. The analysis uses 232.2 fb(-1) of data at center-of-mass energies on or near the Upsilon(4S) resonance. We observe 24 events with an expected background of 21.6 +/- 1.3 events. Without evidence for a signal, we calculate an upper limit of B(tau(-)-> 4 pi(-)3 pi(+)(pi(0))nu(tau))< 3.0 x 10(-7) at 90% confidence level. This is an improvement by nearly an order of magnitude over the previously established limit. In addition, we set upper limits for the exclusive decays tau(-)-> 4 pi(-)3 pi(+)nu(tau) and tau(-)-> 4 pi(-)3 pi(+)pi(0)nu(tau).
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Journal or Publication Title: | PHYSICAL REVIEW D | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | July 2005 | ||||
| Dates: |
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| Volume: | 72 | ||||
| Number: | 1 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | - | ||||
| Identification Number: | 10.1103/PhysRevD.72.012003 | ||||
| Publication Status: | Published | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/6759 |
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