We present a measurement of the B(c)(+) meson lifetime in the decay mode B(c)(+) -> J/psi e(+) nu(e) using the Collider Detector at Fermilab II detector at the Fermilab Tevatron Collider. From a sample of about 360 pb(-1) of pp collisions at root s = 1.96 TeV, we reconstruct J/psi e(+) pairs with invariant mass in the kinematically allowed range 4 < M(J/psi e) < 6 GeV/c(2). A fit to the decay-length distribution of 238 signal events yields a measured B(c)(+) meson lifetime of 0.463(-0.065)(+0.073) (stat) +/- 0.036 (syst) ps. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012
Measurement of the B(c)(+) meson lifetime using the decay mode B(c)(+)-> J/psi e(+)nu(e)
MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;
2006-01-01
Abstract
We present a measurement of the B(c)(+) meson lifetime in the decay mode B(c)(+) -> J/psi e(+) nu(e) using the Collider Detector at Fermilab II detector at the Fermilab Tevatron Collider. From a sample of about 360 pb(-1) of pp collisions at root s = 1.96 TeV, we reconstruct J/psi e(+) pairs with invariant mass in the kinematically allowed range 4 < M(J/psi e) < 6 GeV/c(2). A fit to the decay-length distribution of 238 signal events yields a measured B(c)(+) meson lifetime of 0.463(-0.065)(+0.073) (stat) +/- 0.036 (syst) ps. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012
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