Measurement of the B(c)+ meson lifetime using B(c)+ ---> J/psi e+ nu(e)

Journal Article · Wed Mar 01 00:00:00 EST 2006 · Phys.Rev.Lett.97:012002,2006

OSTI ID:892442

Abulencia, A; Acosta, D; Adelman, Jahred A; Affolder, T; Akimoto, T; Albrow, M G; Ambrose, D; Amerio, S; Amidei, D; Anastassov, A; Anikeev, K

The authors present a measurement of the B{sub c}{sup +} meson lifetime in the semileptonic decay mode B{sub c}{sup +} {yields} J/{psi}e{sup +}{nu}{sub e} using the CDF II detector at the Fermilab Tevatron Collider. From a sample of about 360 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV, they reconstruct J/{psi}e{sup +} pairs with invariant mass in the kinematically allowed range 4 < M{sub J/{psi}e} < 6 GeV/c{sup 2}. A fit to the decay-length distribution of 238 signal events yields a measured B{sub c}{sup +} meson lifetime of 0.463{sub -0.065}{sup +0.073}(stat) {+-} 0.036(syst) ps.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 892442
• Report Number(s): FERMILAB-PUB-06-056-E; PRLTAO; arXiv eprint number hep-ex/0603027; TRN: US0701280
• Journal Information: Phys.Rev.Lett.97:012002,2006, Vol. 97; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISTRIBUTION
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
LIFETIME
MESONS
SEMILEPTONIC DECAY
Experiment-HEP