Searching for $B_c$ mesons in the ATLAS experiment at LHC

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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7 pages, latex file, twoside,fleqn,espcrc2,psfig and subfigure style, with three .ps figures in a uuencoded file. Talk present

Scientific paper

10.1016/0920-5632(96)00407-0

We discuss the feasibility of the observation of the signal from $B_c$ mesons in the ATLAS experiment at the LHC. In particular, we address the decay mode $B_c{\rightarrow}J/\psi \pi$ followed by the leptonic decay $J/\psi{\rightarrow}\mu^+\mu^-$, which should permit an accurate measurement of the $B_c$ mass. We performed a Monte Carlo study of the signal and background concluding that a precision of $\approx$ 1 MeV for the $B_c$ mass could be achieved after one year of running at $\lq\lq$low" luminosity. The semileptonic decay $B_c{\rightarrow}J/\psi\ {\mu}^+{\nu}_{\mu}$ is also considered for a possible extraction of ${\mid}V_{cb}{\mid}$.

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