Department of Physics and Astronomy

Permanent link for this collectionhttps://hdl.handle.net/2022/22354

Browse

Browsing Department of Physics and Astronomy by Author "Abazov, V. M."

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Observation and Properties of the X(3872) Decaying to J/ψπ+π− in p¯p Collisions at √s = 1.96 TeV
    (American Physical Society, 2004-09) Abazov, V. M.; Luo, C.; Lynker, Monika
    We report the observation of the X(3872) in the J/psi pi+pi- channel, with J/psi decaying to mu+mu- in p-p(bar) collisions at sqrt(s) = 1.96 TeV. Using approximately 230 pb^-1 of data collected with the Run II D0 detector, we observe 522 +/- 100 X(3872) candidates. The mass difference between the X(3872) state and the J/psi is measured to be 774.9 +/- 3.1 (stat.) +/- 3.0 (syst.) MeV/c^2. We have investigated the production and decay characteristics of the X(3872), and find them to be similar to those of the psi(2S) state.