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Observation and properties of the X(3872) decaying to J/psipi(+)pi(-) in pp collisions at sqrt[s]=1.96 TeV.
- Source :
-
Physical review letters [Phys Rev Lett] 2004 Oct 15; Vol. 93 (16), pp. 162002. Date of Electronic Publication: 2004 Oct 14. - Publication Year :
- 2004
-
Abstract
- We report the observation of the X(3872) in the J/psipi(+)pi(-) channel, with J/psi decaying to mu(+)mu(-), in pp 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.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 93
- Issue :
- 16
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 15524981
- Full Text :
- https://doi.org/10.1103/PhysRevLett.93.162002