Measurement of |Vub/Vcb| (and |Vub|) in exclusive nonleptonic decays within the generalized factorization scheme

Choong Sun Kim, Youngil Kwon, Jake Lee, W. Namgung

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Within the generalized factorization scheme, we study extracting |Vub/Vcb| by calculating the ratios B(B° →Ds-++))/(B°-tD-D+) including penguin effects. The ratios involving the B°→D-D+ mode have considerable penguin corrections (-15% at the amplitude level), but those involving the B° →DsD+ mode have relatively small penguin corrections. On the other hand, the B°→D-D+ mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring Vub/Vcb,. The theoretical uncertainty from the hadronic form factors in our method is at the level of 20%, which is comparable to the model dependence uncertainty of about 20% in the measurement of

Original languageEnglish
Article number094506
JournalPhysical Review D
Volume63
Issue number9
DOIs
Publication statusPublished - 2001 Dec 1

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factorization
form factors
decay
complement

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Measurement of |Vub/Vcb| (and |Vub|) in exclusive nonleptonic decays within the generalized factorization scheme",
abstract = "Within the generalized factorization scheme, we study extracting |Vub/Vcb| by calculating the ratios B(B° →Ds-(π+,ρ +))/(B°-tD-D+) including penguin effects. The ratios involving the B°→D-D+ mode have considerable penguin corrections (-15{\%} at the amplitude level), but those involving the B° →DsD+ mode have relatively small penguin corrections. On the other hand, the B°→D-D+ mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring Vub/Vcb,. The theoretical uncertainty from the hadronic form factors in our method is at the level of 20{\%}, which is comparable to the model dependence uncertainty of about 20{\%} in the measurement of",
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Measurement of |Vub/Vcb| (and |Vub|) in exclusive nonleptonic decays within the generalized factorization scheme. / Kim, Choong Sun; Kwon, Youngil; Lee, Jake; Namgung, W.

In: Physical Review D, Vol. 63, No. 9, 094506, 01.12.2001.

Research output: Contribution to journalArticle

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T1 - Measurement of |Vub/Vcb| (and |Vub|) in exclusive nonleptonic decays within the generalized factorization scheme

AU - Kim, Choong Sun

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AU - Lee, Jake

AU - Namgung, W.

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