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Type: Journal article
Title: Possible explanation why τB±∼τB⁰ but τD±∼2τD⁰
Other Titles: Possible explanation why tauB+/-~ tauB(0) but tauD+/-~2tauD(0)
Author: Dong, Hui-shi
Guo, Xin-heng
Li, Xue-Qian
Zhang, Rui
Citation: Physical Review D, 1998; 57(11):6807-6813
Publisher: American Physical Society
Issue Date: 1998
ISSN: 0556-2821
School/Discipline: School of Chemistry and Physics : Physics and Mathematical Physics
Statement of
Dong, Hui-shi Guo, Xin-heng ; Li, Xue-qian ; Zhang, Rui
Abstract: Data show that τB±∼τB0, but τD±∼2τD0. The naive interpretation which attributes τD±∼2τD0 to a destructive interference between two quark diagrams for D± decays definitely fails in the B case. We investigate the suggestion of Close and Lipkin that the phases for producing radially excited states ψ2s in the decay products of B mesons can possess an opposite sign to the integrals for ψ1s decay products. Their contributions can partially compensate each other to result in τB±∼τB0. Since D mesons are much lighter than B mesons, such possibilities do not exist in D decays.
Rights: © 1998 American Physical Society
DOI: 10.1103/PhysRevD.57.6807
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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