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

0339472 - FZÚ 2010 RIV US eng J - Journal Article
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
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * top quark * lepton
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.922, year: 2009
http://arxiv.org/abs/0904.3195

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.
Permanent Link: http://hdl.handle.net/11104/0182989