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Effective field theory approach to processes involving both light and heavy fields

Politzer, H. David and Wise, Mark B. (1988) Effective field theory approach to processes involving both light and heavy fields. Physics Letters B, 208 (3-4). pp. 504-507. ISSN 0370-2693. https://resolver.caltech.edu/CaltechAUTHORS:20161018-092313204

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Abstract

The matrix elements of operators containing both heavy quark (Q) fields and light particle fields can contain logarithms of the type In(mQμ) if (in some frame) the heavy quark is approximately static (i.e., |pQ|⪡mQ) and the light particles' typical momentum is of order μ⪡mQ. By performing the functional integral over the heavy quark fields first and treating their mass as very large (so that the heavy quarks are essentially static color sources), the logarithms of (mQμ) are determined by the “infinite” parts of Feynman diagrams involving only the light fields. We show how to sum these logarithms using a renormalization group equation derived from a mass-independent subtraction scheme.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0370-2693(88)90656-9DOIArticle
http://www.sciencedirect.com/science/article/pii/0370269388906569PublisherArticle
ORCID:
AuthorORCID
Politzer, H. David0000-0002-4983-6621
Additional Information:© 1988 Elsevier B.V. Received 2 May 1988.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC-03-81-ER40050
Alfred P. Sloan FoundationUNSPECIFIED
Department of Energy (DOE)DE-FG-03-84-ER40172
Issue or Number:3-4
Record Number:CaltechAUTHORS:20161018-092313204
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161018-092313204
Official Citation:H. David Politzer, Mark B. Wise, Effective field theory approach to processes involving both light and heavy fields, Physics Letters B, Volume 208, Issue 3, 1988, Pages 504-507, ISSN 0370-2693, http://dx.doi.org/10.1016/0370-2693(88)90656-9. (http://www.sciencedirect.com/science/article/pii/0370269388906569)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71205
Collection:CaltechAUTHORS
Deposited By: Joy Painter
Deposited On:18 Oct 2016 16:36
Last Modified:03 Oct 2019 16:05

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