Improved analysis on the semileptonic decay {lambda}{sub c}{yields}{lambda}l{sup +}{nu} from QCD light-cone sum rules
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics, National University of Defense Technology, Hunan 410073 (China)
With the renewed distribution amplitudes of {lambda}, we present a reanalysis on the semileptonic decay {lambda}{sub c}{yields}{lambda}l{sup +}{nu} by use of the light-cone sum rule approach with two kinds of interpolating currents. The form factors describing the decay process are obtained and used to predict the decay width. With the inclusion of up to twist-6 contributions the calculations give the decay width {gamma}=(10.04{+-}0.88)x10{sup -14} GeV for Chernyak-Zhitnitsky-type current and {gamma}=(6.45{+-}1.06)x10{sup -14} GeV for Ioffe-type current. The Ioffe-type interpolating current is found to be better for the estimation of the decay rate from a comparison with experimental data.
- OSTI ID:
- 21325226
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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