A Measurement of the Mass, Full Width and Radiative Width of the $B^+$ (1237) Meson
- Minnesota U.
An experiment was performed at Fermi National Accelorater - Laboratory to investigate the coherent production of mesons on nuclear targets (lead and copper). The experiment used and 200 GeV/c incident - meson beam and a high resolution forward spectrometer consisting of proportional and drift chambers plus a liquid argon photon calorimeter. This thesis reports the results of the process $$\pi^+ +A+ \to \pi^+ w +A$$. The $$\pi^+ w$$ spectrum was found to be dominated by the $B^+$ (l237) meson. A fit was performed on the line shape of the $$\pi^+ w$$ mass spectrum and values of 1.271 ± 0.011 GeV and 0.232 ± 0.029 GeV were found for the mass and total width. The helicity zero decay probability of - the $$w, \mid F_0\mid^2$$, was measured to be $$\mid F_0\mid^2$$ = 0.l5 $$\pm$$ 0.035. The t distributions were analyzed allowing the electromagnetic and hadronic - production processes to interfer. From these distributions a - radiative width of 230 $$\pm$$ 61 was extracted.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1433891
- Report Number(s):
- FERMILAB-THESIS-1984-17; RX-1057 (MINNESOTA); 202914
- Country of Publication:
- United States
- Language:
- English
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