Measurements of the branching fractions and C P asymmetries of B ± ? J / ? p ± and B ± ? ? ( 2 S ) p ± decays
Measurements of the branching fractions and C P asymmetries of B ± ? J / ? p ± and B ± ? ? ( 2 S ) p ± decays
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B ± 的支化分数和 C P 不对称性的测量
DOI:
10.1103/physrevd.85.091105
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发表时间:
2012
影响因子:
5
通讯作者:
Aaij R
中科院分区:
文献类型:
--
作者:
Aaij R
A study ofanddecays is performed with data corresponding toof proton-proton collisions at. Their branching fractions are found to be <?format ?>B(B±→J/ψπ±)=(3.88±0.11±0.15)×10-5andB(B±→ψ(2S)π±)=(2.52±0.26±0.15)×10-5,where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measuredasymmetries in these modes are ACPJ/ψπ=0.005±0.027±0.011andACPψ(2S)π=0.048±0.090±0.011 with no evidence of directviolation seen.