Measurement of the B+_c Meson Lifetime Using B+_c -->J/psi e+nu_e

Journal Article · Thu Jul 06 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.97.012002· OSTI ID:917525

Abulencia, A; Budd, S; Chu, P H; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Liss, T M; Marino, C; Pitts, K; Rogers, E; Taffard, A; Veramendi, G; Zhang, X; Acosta, D; Cruz, A; Field, R

We present a measurement of the B{sub c}{sup +} meson lifetime in the decay mode B{sub c}{sup +}{yields}J/{psi}e{sup +}{nu}e using the Collider Detector at Fermilab 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, we reconstruct J/{psi}e{sup +} pairs with invariant mass in the kinematically allowed range 4<MJ/{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((+0.073)/(-0.065))(stat){+-}0.036(syst) ps.

• Research Organization: COLLABORATION - Fermi
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 917525
• Report Number(s): LBNL--61615
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
DECAY
DISTRIBUTION
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
LIFETIME
MESONS