Measurement of [Formula Presented] (and [Formula Presented] in exclusive nonleptonic decays within the generalized factorization scheme

C. S. Kim, Youngjoon Kwon, Jake Lee, W. Namgung

Research output: Contribution to journalArticle

Abstract

Within the generalized factorization scheme, we study extracting (Formula presented) by calculating the ratios (Formula presented) including penguin effects. The ratios involving the (Formula presented) mode have considerable penguin corrections (Formula presented) at the amplitude level), but those involving the (Formula presented) mode have relatively small penguin corrections. On the other hand, the (Formula presented) mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring (Formula presented) 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 (Formula presented) from the exclusive semileptonic B decays. Using the newest upper limit on (Formula presented) decay from CLEO, our method sets an upper limit (Formula presented) which is very close to the measured values from the semileptonic B decays.

Original languageEnglish
Number of pages1
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume63
Issue number9
DOIs
Publication statusPublished - 2001 Jan 1

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factorization
decay
form factors
complement

All Science Journal Classification (ASJC) codes

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

Cite this

@article{5c4e2d626b9b43368ec46c58cdc389a9,
title = "Measurement of [Formula Presented] (and [Formula Presented] in exclusive nonleptonic decays within the generalized factorization scheme",
abstract = "Within the generalized factorization scheme, we study extracting (Formula presented) by calculating the ratios (Formula presented) including penguin effects. The ratios involving the (Formula presented) mode have considerable penguin corrections (Formula presented) at the amplitude level), but those involving the (Formula presented) mode have relatively small penguin corrections. On the other hand, the (Formula presented) mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring (Formula presented) 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 (Formula presented) from the exclusive semileptonic B decays. Using the newest upper limit on (Formula presented) decay from CLEO, our method sets an upper limit (Formula presented) which is very close to the measured values from the semileptonic B decays.",
author = "Kim, {C. S.} and Youngjoon Kwon and Jake Lee and W. Namgung",
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T1 - Measurement of [Formula Presented] (and [Formula Presented] in exclusive nonleptonic decays within the generalized factorization scheme

AU - Kim, C. S.

AU - Kwon, Youngjoon

AU - Lee, Jake

AU - Namgung, W.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Within the generalized factorization scheme, we study extracting (Formula presented) by calculating the ratios (Formula presented) including penguin effects. The ratios involving the (Formula presented) mode have considerable penguin corrections (Formula presented) at the amplitude level), but those involving the (Formula presented) mode have relatively small penguin corrections. On the other hand, the (Formula presented) mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring (Formula presented) 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 (Formula presented) from the exclusive semileptonic B decays. Using the newest upper limit on (Formula presented) decay from CLEO, our method sets an upper limit (Formula presented) which is very close to the measured values from the semileptonic B decays.

AB - Within the generalized factorization scheme, we study extracting (Formula presented) by calculating the ratios (Formula presented) including penguin effects. The ratios involving the (Formula presented) mode have considerable penguin corrections (Formula presented) at the amplitude level), but those involving the (Formula presented) mode have relatively small penguin corrections. On the other hand, the (Formula presented) mode has a smaller form-factor dependence. Therefore, these ratios complement each other in measuring (Formula presented) 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 (Formula presented) from the exclusive semileptonic B decays. Using the newest upper limit on (Formula presented) decay from CLEO, our method sets an upper limit (Formula presented) which is very close to the measured values from the semileptonic B decays.

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