Observation and properties of the X(3872) decaying to J/psi pi(+)pi(-) in p(p)over-bar collisions at root s=1.96 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
20/05/2014
20/05/2014
15/10/2004
|
Resumo |
We report the observation of the X(3872) in the J/psipi(+)pi(-) channel, with J/psi decaying to mu(+)mu(-), in p (p) over bar collisions at roots=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. |
Formato |
6 |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.93.162002 Physical Review Letters. College Pk: American Physical Soc, v. 93, n. 16, 6 p., 2004. 0031-9007 http://hdl.handle.net/11449/23798 10.1103/PhysRevLett.93.162002 WOS:000224533300025 WOS000224533300025.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |