Simulation Status of X(1835) at BESIII J/ Group xugf@ihep.ac.cn
X(1835) X(1835),(958)+- (,(958)(548)+- ) J/X(1835) K+K- +-0 KSKL
X(1835) Charged Tracks Charge = +1,-1 ΣQch = 0 Vertex Cut: Vr 1.0 cm Vz 5.0cm Good Selection Eneu 40.0 MeV (charge ) 20o (charge ) 20o
J/X(1835)(K+K-) Final States: 2 K+K- 2(+-) NGen = 100K N4c = 1596 (1.6%) N5c = 864 (0.9%)
J/X(1835)(K+K-)(4c)
J/X(1835)(K+K-)(5c)
J/X(1835)(K+K-) ’(958) X(1835) INPUT FIT 2 M=1.019456 =4.26e-3 1.01950.0001 2.9e-30.1e-3 34/31 ’(958) M=0.95778 =2.02e-4 0.95690.0002 3.5e-30.1e-3 56/22 X(1835) M=1.835 =0.06 1.8380.001 2.4e-20.1e-2 108/26 M=0.54775 =1.0e-4 0.56170.0002 7.8e-30.2e-3 97/69
J/X(1835)(+-0) Final States: 4 3(+-) NGen= 50K N4c = 861 (1.7%) N6c = 203 (0.4%)
J/X(1835)(+-0)(6c) 1.019456 0.00426 X(1835) 1.835 0.06 ’(958) 0.95778 0.000202
J/X(1835) Final States: 4 3(+-) NGen = 100K N4c = 3099 (3.1%)
J/X(1835)(+-0)(6c) 0.78259 0.00849 X(1835) 1.835 0.06 ’(958) 0.95778 0.000202
J/X(1835) Final States: 3 2(+-) NGen = 100K N4c = 3960 (4.0%)
J/X(1835)(5c) X(1835) 1.835 0.06 ’(958) 0.95778 0.000202
X(1835) Gen: the output file *.dat is too LARGE evt.dat (px, py, pz, e) *.dat ( MCtruth, raw) 2.0G/file Limit in Linux run.cards : evt_range *_sim.txt : EvtMax Total Energy(Fig.) invariant mass after 5c or 6c
J/X(1835)(K+K-) auto-decay