Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/11180
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DC Field | Value | Language |
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dc.contributor.author | Guo, X. | - |
dc.contributor.author | Thomas, A. | - |
dc.contributor.author | Williams, A. | - |
dc.date.issued | 2000 | - |
dc.identifier.citation | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2000; 61(11):www1-www11 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.issn | 0556-2821 | - |
dc.identifier.uri | http://hdl.handle.net/2440/11180 | - |
dc.description.abstract | Corrections of order 1/m_Q (Q=b or c) to the Bethe-Salpeter (B-S) equation for \Lambda_Q are analyzed on the assumption that the heavy baryon \Lambda_Q is composed of a heavy quark and a scalar, light diquark. It is found that in addition to the one B-S scalar function in the limit m_Q -> \infty, two more scalar functions are needed at the order 1/m_Q. These can be related to the B-S scalar function in the leading order. The six form factors for the weak transition \Lambda_b -> \Lambda_c are expressed in terms of these wave functions and the results are consistent with heavy quark effective theory to order 1/m_Q. Assuming the kernel for the B-S equation in the limit m_Q -> \infty to consist of a scalar confinement term and a one-gluon-exchange term we obtain numerical solutions for the B-S wave functions, and hence for the $\Lambda_b \to \Lambda_c$ form factors to order 1/m_Q. Predictions are given for the differential and total decay widths for \Lambda_b -> \Lambda_c l \bar{\nu}, and also for the nonleptonic decay widths for \Lambda_b -> \Lambda_c plus a pseudoscalar or vector meson, with QCD corrections being also included. | - |
dc.description.statementofresponsibility | Guo, X.-H.; Thomas, A. W. and Williams, A. G. | - |
dc.language.iso | en | - |
dc.publisher | American Physical Soc | - |
dc.rights | ©2000 American Physical Society | - |
dc.source.uri | http://dx.doi.org/10.1103/physrevd.61.116015 | - |
dc.title | 1/mQ corrections to the Bethe-Salpeter equation for ΛQ in the diquark picture | - |
dc.title.alternative | 1/mQ corrections to the Bethe-Salpeter equation for LambdaQ in the diquark picture | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1103/PhysRevD.61.116015 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Thomas, A. [0000-0003-0026-499X] | - |
dc.identifier.orcid | Williams, A. [0000-0002-1472-1592] | - |
Appears in Collections: | Aurora harvest 7 Special Research Centre for the Subatomic Structure of Matter publications |
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hdl_11180.pdf | Published version | 160.88 kB | Adobe PDF | View/Open |
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