Measurement of the Bc meson Lifetime with the Collider Detector at Fermilab
- Tsukuba U.
A new measurement of the inclusive and di erential production cross sections of J mesons and b-hadrons in proton-antiproton collisions at s 1960 GeV is presented. The data correspond to an integrated luminosity of 39.7 pb 1 collected by the CDF Run II detector. The integrated cross section for inclusive J produc- tion for all transverse momenta from 0 to 20 GeV c in the rapidity range y 0 6 is found to be 4 08 0 02(stat) 0 36(syst) b. The fraction of J events from the decay of the long-lived b-hadrons is sperated by using the lifetime distribution in all events with pT (J ) 1 25 GeV c. The total cross section for b-hadrons, including both hadrons and anti-hadrons, decaying to J with transverse mo- menta greater than 1.25 GeV c in the rapidity range y(J ) 0 6, is found to be 0 330 0 005(stat) 0 036(syst) b. Using a Monte Carlo simulation of the decay kinematics of b-hadrons to all final states containing a J , the first measurement of the total single b-hadron cross section down to zero transverse momentum is extracted at sqrts 1960 GeV. The total single b-hadron cross section integrated over all transverse momenta for b-hadrons in the rapidity range y 0 6 is found to be 17 6 0 4(stat) 2 5(syst)
- 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:
- 1415840
- Report Number(s):
- FERMILAB-THESIS-2006-70; 741114
- Country of Publication:
- United States
- Language:
- English
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