Isgur-Wise function for Λb→Λc in the BS approach
Physical Review D Volume 54 Issue 7
Page 4629-4634
published_at 1996-10-01
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| File | |
| Title ( eng ) |
Isgur-Wise function for Λb→Λc in the BS approach
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| Creator |
Guo X.-H.
Muta Taizo
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| Source Title |
Physical Review D
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| Volume | 54 |
| Issue | 7 |
| Start Page | 4629 |
| End Page | 4634 |
| Abstract |
In the heavy quark limit, the heavy baryon ΛQ (Q=b or c) can be regarded as composed of a heavy quark and a scalar light diquark which has good spin and flavor quantum numbers. Based on this picture we establish the Bethe-Salpeter (BS) equation for ΛQ in the leading order of 1/mQ expansion. With the kernel containing both the scalar confinement and one-gluon-exchange terms we solve the BS equation numerically. The Isgur-Wise function for Λb→Λc is obtained numerically from our model. A comparison with other model calculations is also presented. It seems that the Isgur-Wise function for Λb→Λc drops faster than that for B→D. The differential and total decay widths for Λb→Λclν̅ are given in the limit mb,c→∞.
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| NDC |
Astronomy. Space sciences [ 440 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1996-10-01 |
| Rights |
Copyright (c) 1996 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] http://dx.doi.org/10.1103/PhysRevD.54.4629
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