Počet záznamů: 1

Measurement of the top quark mass in final states with two leptons

  1. 1.
    0339472 - FZU-D 2010 RIV US eng J - Článek v odborném periodiku
    Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš
    Measurement of the top quark mass in final states with two leptons.
    Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 80, č. 9 (2009), 092006/1-092006/21 ISSN 1550-7998
    Grant CEP: GA MŠk LC527; GA MŠk LA08047
    Výzkumný záměr: CEZ:AV0Z10100502
    Klíčová slova: D0 * top quark * lepton
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 4.922, rok: 2009

    We present measurements of the top quark mass in ttbar candidate events with two final state leptons using 1 inverse fb of data collected by the D0 experiment. Our data sample is selected by requiring two fully identified leptons or by relaxing one lepton requirement to an isolated track if at least one jet is tagged as a b jet. The top quark mass is extracted after reconstructing the event kinematics under the ttbar hypothesis using two methods. In the first method, we integrate over expected neutrino rapidity distributions, and in the second we calculate a weight for the possible top quark masses based on the observed particle momenta and the known parton distribution functions.
    Trvalý link: http://hdl.handle.net/11104/0182989