Measurement of the ratio of branching fractions B(B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}})/B(B{sup {+-}}{yields}J/{psi}K{sup {+-}})
Journal Article
·
· Physical Review. D, Particles Fields
- University of Illinois, Urbana, Illinois 61801 (United States)
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
We report a measurement of the ratio of branching fractions of the decays B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} and B{sup {+-}}{yields}J/{psi}K{sup {+-}} using the CDF II detector at the Fermilab Tevatron Collider. The signal from the Cabbibo-suppressed B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} decay is separated from B{sup {+-}}{yields}J/{psi}K{sup {+-}} using the B{sup {+-}}{yields}J/{psi}K{sup {+-}} invariant mass distribution and the kinematical differences of the hadron track in the two decay modes. From a sample of 220 pb{sup -1} of pp collisions at {radical}(s)=1.96 TeV, we observe 91{+-}15 B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} events together with 1883{+-}34 B{sup {+-}}{yields}J/{psi}K{sup {+-}} events. The ratio of branching fractions is found to be B(B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}})/B(B{sup {+-}}{yields}J/{psi}K{sup {+-}})=(4.86{+-}0.82(stat){+-}0.15(syst))%.
- OSTI ID:
- 21296411
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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