Measurement of Inclusive Low Mass Muon Pair Production by 225-GeV/c Proton and Charged Pion Beams with a Large Acceptance Spectrometer
- Univ. of Chicago, IL (United States)
We have performed a high resolution experiment which measured the low mass dimuon signal produced in hadronic interactions over a wide range in $$x_F$$ and $$p_T$$, using a large acceptance spectrometer. The experiment has yielded the dimuon cross sections as a function of mass and as functions of $$x_F$$ and $$P_T$$. A "continuum" has been observed under the resonance signals. Resonance cross sections have been extracted and the continuum contribution has also been estimated. Various contributions to the continuum signal have been estimated and the contributions considered fail to account for more than 60 per cent of the signal in the lowest mass region. The most promising models attempting to predict the low mass signal either (1) fail to account for the data or (2) are insufficiently precise at this stage to predict the mass distribution of the low mass signal and to predict the large cross section observed. The dimuon contribution to the single muon's signal has been calculated and is in reasonable agreement with the exciting large signal observed in single muon experiments. Thus the question of the origin of single muons is being replaced by another equally intriguing question. What is the source of low mass dimuons?
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1406596
- Report Number(s):
- FERMILAB-THESIS-1978-01; 132743
- Country of Publication:
- United States
- Language:
- English
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