Limit on $$\Upsilon$$ Muoproduction at 209 GeV
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Princeton Univ., NJ (United States)
We present the dimuon mass spectrum from 102 678 three-muon final states produced by muon interactions within a magnetized steel calorimeter. The data place a 90%-confidence limit on the production of $$\Upsilon$$ states by muons: $$\sigma(\mu N \to\mu TX)B(\Upsilon\to\mu^+\mu^-)<22\times10^{-39} cm^2$$, consistent with a photon-gluon-fusion model calculation.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231; W-7405-ENG-48
- OSTI ID:
- 1070083
- Report Number(s):
- LBL--11009
- Country of Publication:
- United States
- Language:
- English
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