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dc.contributor.authorHabashi, J. Balal
dc.contributor.authorFleming, S.
dc.contributor.authorSen, S.
dc.contributor.authorvan Kolck, U.
dc.date.accessioned2021-01-13T18:43:34Z
dc.date.available2021-01-13T18:43:34Z
dc.date.issued2020-11
dc.identifier.citationHabashi, J. B., Fleming, S., Sen, S., & van Kolck, U. (2020). Effective field theory for two-body systems with shallow S-wave resonances. Annals of Physics, 422, 168283.en_US
dc.identifier.issn0003-4916
dc.identifier.doi10.1016/j.aop.2020.168283
dc.identifier.urihttp://hdl.handle.net/10150/650753
dc.description.abstractResonances are of particular importance in the scattering of composite particles in quantum mechanics. We build an effective field theory for two-body scattering which includes a low-energy S-wave resonance. Our starting point is the most general La-grangian with short-range interactions. We demonstrate that these interactions can be organized into various orders so as to generate a systematic expansion for an S matrix with two low energy poles. The pole positions are restricted by renormalization at leading order, where the common feature is a non-positive effective range. We carry out the expansion explicitly to next to-leading order and illustrate how it systematically accounts for the results of a toy model - a spherical well with a delta shell at its border. (C) 2020 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipU.S. Department of Energyen_US
dc.language.isoenen_US
dc.publisherElsevier BVen_US
dc.rights© 2020 Elsevier Inc. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleEffective field theory for two-body systems with shallow S-wave resonancesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Physen_US
dc.identifier.journalANNALS OF PHYSICSen_US
dc.description.note24 month embargo; available online 20 August 2020en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.identifier.piiS0003491620302177
dc.source.journaltitleAnnals of Physics
dc.source.volume422
dc.source.beginpage168283


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