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Search for the Lepton Number Violating Decay (tau)(yields)(mu)(gamma).

DE2003812952

Publication Date	2003
Personal Author	Brown, C.
Page Count	12
Abstract	Using data collected with the BABAR detector between 1999 and 2001, we describe a preliminary search for the neutrinoless decay gamma yields micro gamma. This data sample includes data collected both on and of the Gamma(4S) resonance and corresponds to 56 x 10 the the sixth power produced tau pair events. The search has an efficiency of 5.2 plus or minus 0:1(MCstat) plus or minus 0:5(sys)% and an expected background rate of 7.8 plus or minus 1.4 events. We select 13 events in the final sample. As there is no evidence for a signal in this data, we set a preliminary upper limit of B(gamma yields micro gamma) less than 2:0 X10 to the minus 6th power at 90% CL.
Keywords	BABAR detectors Neutrinoless decay Mass determination Energy determination Systematics Forbidden decay Data analysis
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Victoria Univ. of Manchester (England). Dept. of Physics and Astronomy.; Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Stanford Linear Accelerator Center, CA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200409

Search for the Lepton Number Violating Decay (tau)(yields)(mu)(gamma).

Search for the Lepton Number Violating Decay (tau)(yields)(mu)(gamma).
DE2003812952

Publication Date	2003
Personal Author	Brown, C.
Page Count	12
Abstract	Using data collected with the BABAR detector between 1999 and 2001, we describe a preliminary search for the neutrinoless decay gamma yields micro gamma. This data sample includes data collected both on and of the Gamma(4S) resonance and corresponds to 56 x 10 the the sixth power produced tau pair events. The search has an efficiency of 5.2 plus or minus 0:1(MCstat) plus or minus 0:5(sys)% and an expected background rate of 7.8 plus or minus 1.4 events. We select 13 events in the final sample. As there is no evidence for a signal in this data, we set a preliminary upper limit of B(gamma yields micro gamma) less than 2:0 X10 to the minus 6th power at 90% CL.
Keywords	BABAR detectors Neutrinoless decay Mass determination Energy determination Systematics Forbidden decay Data analysis
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Victoria Univ. of Manchester (England). Dept. of Physics and Astronomy.; Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Stanford Linear Accelerator Center, CA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200409