28,734 research outputs found

    Charm spectroscopy in DELPHI

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    The production of charmed particles has been studied using 3.5 milllion hadronic Z decays collected by the DELPHI collaboration at LEP between 1992 and 1995. Large samples of D meson decays have been exclusively reconstructed, allowing to look for Dpi^*pi and Dpipi^*pipi final states. The production fractions of the narrow D10(2420)_1^0(2420) and D20(2460)_2^{*0}(2460) orbital states are measured in c and b quark jets separately. Evidence for a radial state D(2637)^{*'}(2637) is presented in the D+pi+pi^{*+}pi^+pi^- decay mode. %DB Interesting perspectives to look for the wide orbital states in semileptonic B %DB decays are discussed

    Beauty and charm physics at LEP

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    Recent results in charm and beauty physics at LEP are reported. They allow refined tests of strong and electroweak interactions. The importance of measuring as accurately as possible the apex of the unitarity is emphasized
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