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Measurement of the Bc+ Meson Lifetime Using the Decay Mode Bc+ -> J/ψe+νe

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / Donega, Mauro / Lister, Alison / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2006, vol. 97, no. 01, p. 012002
Abstract We present a measurement of the B+c meson lifetime in the decay mode B+c→J/ψe+νe 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 s√=1.96  TeV, we reconstruct J/ψe+ pairs with invariant mass in the kinematically allowed range 4<MJ/ψe<6  GeV/c2. A fit to the decay-length distribution of 238 signal events yields a measured B+c meson lifetime of 0.463+0.073−0.065(stat)±0.036(syst)  ps.
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CDF COLLABORATION. Measurement of the Bc+ Meson Lifetime Using the Decay Mode Bc+ -> J/ψe+νe. In: Physical Review Letters, 2006, vol. 97, n° 01, p. 012002. https://archive-ouverte.unige.ch/unige:38348

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Deposited on : 2014-07-01

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