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dc.contributor.authorLee, Keith S. M.
dc.contributor.authorTackmann, Frank
dc.date.accessioned2010-03-18T18:59:36Z
dc.date.available2010-03-18T18:59:36Z
dc.date.issued2009-06
dc.date.submitted2009-02
dc.identifier.issn1550-2368
dc.identifier.issn1550-7998
dc.identifier.urihttp://hdl.handle.net/1721.1/52722
dc.description.abstractRecently, it was shown that in inclusive B→X[subscript s]ℓ[superscript +]ℓ[superscript -] decay, an angular decomposition provides three independent (q2 dependent) observables. A strategy was formulated to extract all measurable Wilson coefficients in B→X[subscript s]ℓ[superscript +]ℓ[superscript -] from a few simple integrals of these observables in the low q[superscript 2] region. The experimental measurements in the low q[superscript 2] region require a cut on the hadronic invariant mass, which introduces a dependence on nonperturbative b quark distribution functions. The associated hadronic uncertainties could potentially limit the sensitivity of these decays to new physics. We compute the nonperturbative corrections to all three observables at leading and subleading order in the power expansion in Λ[subscript QCD]/m[subscript b]. We find that the subleading power corrections give sizeable corrections, of order -5% to -10% depending on the observable and the precise value of the hadronic mass cut. They cause a shift of order -0.05  GeV[superscript 2] to -0.1   GeV[superscript 2] in the zero of the forward-backward asymmetry.en
dc.language.isoen_US
dc.publisherAmerican Physical Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.79.114021en
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en
dc.sourceAPSen
dc.titleNonperturbative m[subscript X] cut effects in -->X[subscript s]l[superscript +]l[superscript -] observablesen
dc.title.alternativeNonperturbative mX cut effects in B→Xsℓ+ℓ- observablesen
dc.typeArticleen
dc.identifier.citationLee, Keith S. M. and Frank J. Tackmann. "Nonperturbative m[subscript X] cut effects in -->X[subscript s]l[superscript +]l[superscript -] observables." Physical Review D 79.11 (2009): 114021. © 2009 The American Physical Societyen
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Laboratory for Nuclear Scienceen_US
dc.contributor.approverTackmann, Frank
dc.contributor.mitauthorLee, Keith S. M.
dc.contributor.mitauthorTackmann, Frank
dc.relation.journalPhysical Review Den
dc.eprint.versionFinal published versionen
dc.type.urihttp://purl.org/eprint/type/JournalArticleen
eprint.statushttp://purl.org/eprint/status/PeerRevieweden
dspace.orderedauthorsLee, Keith; Tackmann, Franken
mit.licensePUBLISHER_POLICYen
mit.metadata.statusComplete


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