Measurements Of Absolute Branching Fractions Of Multibody Hadronic D Decays To ?

By analyzing an e+e-annihilation data sample of 2.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BES? detector,we have measured the absolute branching fractions of fourteen multibody hadronic D decays to ?(D??X).The branching fractions measured in the unit of 10-4 are listed as:B(D0?K-?+?)=185.3±2.5±3.1,B(D0?KS0?0?)=100.6 ± 3.4 ± 3.1,B(D0?K+K-?)=0.6±0.2 ± 0.1,B(D0?KS0KS0?)=1.3 ± 0.6 ± 0.2,B(D0?K-?+?0?)=44.9±2.2±1.5,B(D0?KS0?+?-??=28.0 ± 1.9 ± 1.0,B(D0?KS0?0?0?)=17.6±2.3 ± 1.4,B(D0??+?-?0?)=32.3±1.7 ± 1.4,B(D+?KS0?+?)=130.9 ± 3.7 ± 3.1,B(D+?KS0K+?)=1.9 ± 0.5 ± 0.1,V(D+?K-?+?+?)=13.5±1.1±0.4,B(D+?KS0?+?0?)=12.2±2.4±0.6,B(D+??+?+?-?)=34.1±1.7 ± 1.2,B(D+??+?0??0?)=32.0±2.8 ± 1.7,where the first and second uncertainties are statistical and systematic,respective-ly.Compared to the previous measurements reported in Particle Data Group,the B(D0?KS0?0?)is determined with much bettter precision while the other decays are measured for the first time.In addition,for the decays D0?K-?+?,KS0?0?,K-?+?+?0?,?+?-?0?and D+?KS0?+?,?+?+?-?,we have measured the branching fraction asym-metries for these decays and their corresponding charged conjugate decays,no evidence of significant CP violation is found.