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Extracting short distance information from b-->s[script-l]+[script-l]- effectively

Lee, Keith S. M. and Ligeti, Zoltan and Stewart, Iain W. and Tackmann, Frank J. (2007) Extracting short distance information from b-->s[script-l]+[script-l]- effectively. Physical Review D, 75 (3). Art. No. 034016. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:LEEprd07

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Abstract

We point out that in inclusive B-->Xs[script-l]+[script-l]- decay an angular decomposition provides a third (q2 dependent) observable sensitive to a different combination of Wilson coefficients than the rate and the forward-backward asymmetry. Since a precise measurement of q2 dependence requires large data sets, it is important to consider the data integrated over regions of q2. We develop a strategy to extract all measurable Wilson coefficients in B-->Xs[script-l]+[script-l]- from a few simple integrated rates in the low q2 region. A similar decomposition in B-->K*[script-l]+[script-l]-, together with the B-->K*gamma rate, also provides a determination of the Wilson coefficients, without reliance on form factor models and without having to measure the zero of the forward-backward asymmetry.


Item Type:Article
ORCID:
AuthorORCID
Ligeti, Zoltan0000-0002-4830-5773
Additional Information:©2007 The American Physical Society. (Received 21 December 2006; published 26 February 2007) We are grateful to Peter Cooper, Enrico Lunghi and especially Jeff Berryhill for helpful conversations. We thank Christoph Bobeth for providing us with his Mathematica code for the running of the Wilson coefficients as given in Refs. [19,20]. Z.L. thanks the MIT CTP for its hospitality while part of this work was completed. This work was supported in part by the Director, Office of Science, Offices of High Energy and Nuclear Physics of the U.S. Department of Energy under the Contracts No. DE-AC02-05CH11231 (Z.L. and F.T.), and the cooperative research agreement DOE-FC02-94ER40818 (I.S.). I.S. was also supported in part by the DOE OJI program and by the Sloan Foundation.
Subject Keywords:Leptonic/semileptonic decays of bottom mesons
Record Number:CaltechAUTHORS:LEEprd07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LEEprd07
Alternative URL:http://dx.doi.org/10.1103/PhysRevD.75.034016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7534
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:02 Mar 2007
Last Modified:27 Oct 2017 20:10

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