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Full-Text Articles in Physics
Search For X(3872) And X(3915) Decay Into Χc1Π0 In B Decays At Belle, The Belle Collaboration, Luminda Kulasiri
Search For X(3872) And X(3915) Decay Into Χc1Π0 In B Decays At Belle, The Belle Collaboration, Luminda Kulasiri
Faculty and Research Publications
We report a search for X(3872) and X (3915) in B+→χc1π0K+ decays. We set an upper limit of B(B+→X(3872)K+)×B(X(3872)→χc1π0)<8.1×10−6 and B(B+→X(3915)K+)×B(X(3915)→χc1π0)<3.8×10−5 at 90% confidence level. We also measure B(X(3872)→χc1π0)/B(X(3872)→J/ψπ+π−)<0.97 at 90% confidence level. The results reported here are obtained from 772×106 B¯B events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider.
Search For Υ ( 1 S , 2 S ) → Z + C Z ( ' ) C − And E + E − → Z + C Z ( ' ) C − At √ S = 10.52 , 10.58, And 10.867 Gev, S. Jia Et Al., Ratnappuli L. Kulasiri
Search For Υ ( 1 S , 2 S ) → Z + C Z ( ' ) C − And E + E − → Z + C Z ( ' ) C − At √ S = 10.52 , 10.58, And 10.867 Gev, S. Jia Et Al., Ratnappuli L. Kulasiri
Faculty and Research Publications
The first search for double charged charmoniumlike state production in Υ(1S) and Υ(2S) decays and in e+e− annihilation at √s=10.52, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90% credibility level upper limits on their product branching fractions in Υ(1S) and Υ(2S) decays [B(Υ(1S,2S)→Z+cZ(')−c)×B(Z+c→π++c¯c) (c¯c=J/ψ, χc1(1P), ψ(2S))] and the product of Born cross section and branching fraction for e+e−→Z+cZ(')−c (σ(e+e−→Z+cZ(')−c)×B(Z+c→π++c¯c)) at √s=10.52, 10.58, and 10.867 GeV are determined. Here, Zc refers to the Zc(3900) and …
Search For Light Tetraquark States In Υ ( 1 S ) And Υ ( 2 S ) Decays, S. Jia Et Al., David Joffe, Ratnappuli L. Kulasiri
Search For Light Tetraquark States In Υ ( 1 S ) And Υ ( 2 S ) Decays, S. Jia Et Al., David Joffe, Ratnappuli L. Kulasiri
Faculty and Research Publications
We search for the JPC=0−− and 1+− light tetraquark states with masses up to 2.46 GeV/c2 in Υ(1S) and Υ(2S) decays with data samples of (102±2) million and (158±4) million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90% credibility level (C.L.) upper limits on their branching fractions in Υ(1S)and Υ(2S) decays are obtained. The inclusive branching fractions of the Υ(1S) and Υ(2S) decays into final states with f1(1285) are measured to be B(Υ(1S)→f1(1285)+anything)=(46±28(stat)±13(syst))×10−4 and B(Υ(2S)→f1(1285)+anything)=(22±15(stat)±6.3(syst))×10−4. The measured χb2→J/ψ+anything branching fraction is measured to be (1.50±0.34(stat)±0.22(syst))×10−3, and 90% …